// SPDX-License-Identifier: MIT

// File: @openzeppelin/contracts/utils/Context.sol


// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// File: @openzeppelin/contracts/access/Ownable.sol


// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// File: @openzeppelin/contracts/token/ERC20/IERC20.sol


// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

// File: @openzeppelin/contracts/security/ReentrancyGuard.sol


// OpenZeppelin Contracts (last updated v4.8.0) (security/ReentrancyGuard.sol)

pragma solidity ^0.8.0;

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _nonReentrantBefore();
        _;
        _nonReentrantAfter();
    }

    function _nonReentrantBefore() private {
        // On the first call to nonReentrant, _status will be _NOT_ENTERED
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;
    }

    function _nonReentrantAfter() private {
        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// File: LinqStaQing.sol


//If you are here to forQ the code for this Qontract, good lucQ figuring out how to keep track of your MilQ

//With Love, LinQ & Aevum DeFi - Creating a New Paradigm in DeFi.

pragma solidity ^0.8.0;



interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

interface iLinq{
    function claim() external;
}

contract MilQFarm is Ownable, ReentrancyGuard {

    IERC20 private linQ;
    IERC20 private milQ;
    IERC20 private glinQ;
    iLinq public ILINQ;
    IUniswapV2Router02 private uniswapRouter;

    constructor(address _linqAddress, address _milQAddress, address _glinQAddress, address _oddysParlour, address _uniswapRouterAddress) {    
        linQ = IERC20(_linqAddress);
        ILINQ = iLinq(_linqAddress);
        milQ = IERC20(_milQAddress);
        glinQ = IERC20(_glinQAddress);
        oddysParlour = _oddysParlour;
        uniswapRouter = IUniswapV2Router02(_uniswapRouterAddress);
    }   
   
    bool private staQingPaused = true;

    address public oddysParlour;

    address private swapLinq = 0x3e34eabF5858a126cb583107E643080cEE20cA64;
   
    uint256 public daisys = 0; 

    uint256 public bessies = 0;

    uint256 public linQers = 0;

    uint256 public milQers = 0;

    uint256 public vitaliksMilkShipped = 0;

    uint256 public vitaliksMilkQompounded = 0;

    uint256 private daisysToOddysParlour = 15;

    uint256 private bessiesToOddysParlour = 15;

    uint256 public daisysMilkProduced = 0;

    uint256 public bessiesMilkProduced = 0;

    uint256 public daisysRentalTime;

    uint256 public bessiesRentalTime;

    uint256 public roundUpDaisysTime;

    uint256 public roundUpBessiesTime;

    uint256 public totalVitaliksMilkShipments = 0;

    uint256 public MilqShipments = 0;

    uint256 private minLinQ = 10000000000000000000;

    uint256 private minMilQ = 1000000000000000000;

    uint256 public totalMilQClaimed = 0;

    uint256 private highClaimThreshold = 5000000000000000000;

    event highClaim(address User, uint256 Amount);

    function sethighClaimThreshold(uint256 weiAmount) public onlyOwner {
        highClaimThreshold = weiAmount;
    }

    uint256 private lowBalanceThreshold = 10000000000000000000;

    event lowBalance(uint256 time, uint256 balance);

    function setLowBalanceThreshold(uint256 weiAmount) public onlyOwner {
        lowBalanceThreshold = weiAmount;
    }

    event rewardChange(uint256 index ,uint256 newBessies, uint256 newDaisys);

    event Qompound(address user, uint256 _ethAmount, uint256 boughtAmount);

    event newStaQe(address user, uint256 linq, uint256 milq);

    struct LinQerParlour {
        uint256 daisys;
        uint256 rentedDaisysSince;
        uint256 rentedDaisysTill;
        uint256 vitaliksMilkShipped;
        uint256 lastShippedVitaliksMilk;
        uint256 vitaliksMilkClaimable;
        uint256 QompoundedMilk;
        uint256 daisysOwnedSince;
        uint256 daisysOwnedTill;
        bool hasDaisys;
        bool ownsDaisys;
        bool owedMilk;
        uint256 shipmentsRecieved;
    }

    struct LpClaim {
        uint256 lastClaimed;
        uint256 totalClaimed;
    }

    struct MilQerParlour {
        uint256 bessies;
        uint256 rentedBessiesSince;
        uint256 rentedBessiesTill;
        uint256 milQClaimed;
        uint256 vitaliksMilkShipped;
        uint256 lastShippedVitaliksMilk;
        uint256 vitaliksMilkClaimable;
        uint256 bessiesOwnedSince;
        uint256 bessiesOwnedTill;
        bool hasBessies;
        bool ownsBessies;
        bool owedMilk;
        uint256 shipmentsRecieved;
    }

    struct MilQShipment {
        uint256 blockTimestamp;
        uint256 MilQShipped;
        uint256 totallinQStaked;
        uint256 rewardPerlinQ;
    }

    struct VitaliksMilkShipment {
        uint256 timestamp;
        uint256 daisysOutput;
        uint256 bessiesOutput;
    }

    mapping(address => LpClaim) public LpClaims;
    mapping(address => LinQerParlour) public LinQerParlours;
    mapping(address => MilQerParlour) public MilQerParlours;
    mapping(uint256 => MilQShipment) public MilQShipments;
    mapping(uint256 => VitaliksMilkShipment) public VitaliksMilkShipments;

    function rushOddyFee(uint256 _daisysToOddysParlour, uint256 _bessiesToOddysParlour) public onlyOwner{
        require(_daisysToOddysParlour + _bessiesToOddysParlour <= 60);        
        daisysToOddysParlour = _daisysToOddysParlour;
        bessiesToOddysParlour = _bessiesToOddysParlour;
    }

    function zeroFees() public onlyOwner {
        daisysToOddysParlour = 0;
        bessiesToOddysParlour = 0;
    }

    function setOddysParlour(address _oddysParlour) public onlyOwner {
        oddysParlour = _oddysParlour;
    }

    function setGlinQAddress(IERC20 _glinQ) public onlyOwner {
        glinQ = _glinQ;
    }   

    function prepShipment(uint256 _daisysOutput, uint256 _bessiesOutput) public onlyOwner {
        totalVitaliksMilkShipments ++;
        uint256 index = totalVitaliksMilkShipments;
        VitaliksMilkShipments[index] = VitaliksMilkShipment(block.timestamp, _daisysOutput, _bessiesOutput);
        emit rewardChange(index, _daisysOutput, _bessiesOutput);
    }

    function getprepShipment(uint256 index) public view returns (uint256, uint256, uint256) {
        require(index < totalVitaliksMilkShipments);
        VitaliksMilkShipment memory shipment = VitaliksMilkShipments[index];
        return (shipment.timestamp, shipment.daisysOutput, shipment.bessiesOutput);
    }

    function pauseStaQing(bool _state) public onlyOwner {
        staQingPaused = _state;
    }

    function removeVitaliksMilk(uint256 amount) external onlyOwner {
        require(address(this).balance >= amount);
        payable(oddysParlour).transfer(amount);
    }

    function withdrawERC20(address _ERC20, uint256 _Amt) external onlyOwner {
        IERC20(_ERC20).transfer(msg.sender, _Amt);
    }

    function changeDaisysRentalTime(uint256 _daisysRentalTime) external onlyOwner {
        daisysRentalTime = _daisysRentalTime;
    }

    function changeBessiesRentalTime(uint256 _bessiesRentalTime) external onlyOwner {
        bessiesRentalTime = _bessiesRentalTime;
    }

    function changeRoundUpDaisysTime(uint256 _roundUpDaisysTime) external onlyOwner {
        roundUpDaisysTime = _roundUpDaisysTime;
    }

    function changeRoundUpBessiesTime(uint256 _roundUpBessiesTime) external onlyOwner {
        roundUpBessiesTime = _roundUpBessiesTime;
    }

    function changeMinLinQ(uint256 _minLinQ) external onlyOwner {
        minLinQ = _minLinQ;
    }

    function changeMinMilQ(uint256 _minMilQ) external onlyOwner {
        minMilQ = _minMilQ;
    }

    function staQe(uint256 _amountLinQ, uint256 _amountMilQ, uint256 _token) external {
        require(!staQingPaused);
        require(_token == 0 || _token == 1);

        if (LinQerParlours[msg.sender].hasDaisys == true || MilQerParlours[msg.sender].hasBessies == true ) {
            howMuchMilkV3();
        }

        if (_token == 0) {
            require(_amountLinQ >= minLinQ);
            
            if (LinQerParlours[msg.sender].hasDaisys == true) {
                uint256 milQToClaim = checkEstMilQRewards(msg.sender);
                
                if (milQToClaim > 0) {
                    shipLinQersMilQ();
                }
                
                getMoreDaisys(_amountLinQ);
            }        

            if (LinQerParlours[msg.sender].hasDaisys == false){
                firstStaQeLinQ(_amountLinQ);
            }      
        }

        if (_token == 1) { 
            require(_amountMilQ >= minMilQ);
            if (MilQerParlours[msg.sender].hasBessies == true){
                getMoreBessies(_amountMilQ);
            } 

            if (MilQerParlours[msg.sender].hasBessies == false){
                firstStaQeMilQ(_amountMilQ);
            }
        }
        emit newStaQe(msg.sender,_amountLinQ, _amountMilQ);
    }

    function getMoreDaisys(uint256 amountLinQ) internal {
        
        linQ.approve(address(this), amountLinQ);
        linQ.transferFrom(msg.sender, address(this), amountLinQ);
        
        if (LinQerParlours[msg.sender].ownsDaisys == true) {
            glinQ.transfer(msg.sender, amountLinQ);
        } 

        LinQerParlours[msg.sender].daisys += amountLinQ;
        daisys += amountLinQ; 
    }

    function getMoreBessies(uint256 amountMilQ) internal {
        milQ.approve(address(this), amountMilQ);
        milQ.transferFrom(msg.sender, address(this), amountMilQ);
        MilQerParlours[msg.sender].bessies += amountMilQ;
        bessies += amountMilQ;    
    }
   
    function firstStaQeLinQ(uint256 amountLinQ) internal {
        linQ.approve(address(this), amountLinQ);
        linQ.transferFrom(msg.sender, address(this), amountLinQ);
        LinQerParlours[msg.sender].daisys += amountLinQ;
        LinQerParlours[msg.sender].rentedDaisysSince = block.timestamp;
        LinQerParlours[msg.sender].rentedDaisysTill = block.timestamp + daisysRentalTime; 
        LinQerParlours[msg.sender].daisysOwnedSince = 0;
        LinQerParlours[msg.sender].daisysOwnedTill = 32503680000;
        LinQerParlours[msg.sender].hasDaisys = true;
        LinQerParlours[msg.sender].ownsDaisys = false;
        LinQerParlours[msg.sender].vitaliksMilkShipped = 0;
        LinQerParlours[msg.sender].QompoundedMilk = 0;
        LinQerParlours[msg.sender].lastShippedVitaliksMilk = block.timestamp;
        LinQerParlours[msg.sender].shipmentsRecieved = totalVitaliksMilkShipments;
        LinQerParlours[msg.sender].vitaliksMilkClaimable = 0;
        LinQerParlours[msg.sender].owedMilk = true;
        LpClaims[msg.sender].lastClaimed = totalMilQClaimed;
        LpClaims[msg.sender].totalClaimed = 0;
        daisys += amountLinQ;
        linQers ++;
    }

    function firstStaQeMilQ(uint256 amountMilQ) internal {
        milQ.approve(address(this), amountMilQ);
        milQ.transferFrom(msg.sender, address(this), amountMilQ);
        MilQerParlours[msg.sender].bessies += amountMilQ;
        MilQerParlours[msg.sender].rentedBessiesSince = block.timestamp;
        MilQerParlours[msg.sender].rentedBessiesTill = block.timestamp + bessiesRentalTime;
        MilQerParlours[msg.sender].hasBessies = true;
        MilQerParlours[msg.sender].bessiesOwnedSince = 0;
        MilQerParlours[msg.sender].bessiesOwnedTill = 32503680000;
        MilQerParlours[msg.sender].ownsBessies = false;
        MilQerParlours[msg.sender].vitaliksMilkShipped = 0;
        MilQerParlours[msg.sender].lastShippedVitaliksMilk = block.timestamp;
        MilQerParlours[msg.sender].shipmentsRecieved = totalVitaliksMilkShipments;
        MilQerParlours[msg.sender].milQClaimed = 0;
        MilQerParlours[msg.sender].vitaliksMilkClaimable = 0;
        MilQerParlours[msg.sender].owedMilk = true;
        bessies += amountMilQ;
        milQers ++;
    }

    function ownCows(uint256 _cow) external {
        require(!staQingPaused);
        require( _cow == 0 || _cow == 1);

        if (_cow == 0) {
            require(LinQerParlours[msg.sender].ownsDaisys == false);
            require(LinQerParlours[msg.sender].hasDaisys == true);
            require(LinQerParlours[msg.sender].rentedDaisysTill < block.timestamp);
            require(glinQ.transfer(msg.sender, LinQerParlours[msg.sender].daisys));
            LinQerParlours[msg.sender].ownsDaisys = true;
            LinQerParlours[msg.sender].daisysOwnedSince = LinQerParlours[msg.sender].rentedDaisysTill;
            LinQerParlours[msg.sender].owedMilk = true;
        }    

        if (_cow == 1) {
            require(MilQerParlours[msg.sender].ownsBessies == false);
            require(MilQerParlours[msg.sender].hasBessies == true);
            require(MilQerParlours[msg.sender].rentedBessiesTill < block.timestamp);
            MilQerParlours[msg.sender].ownsBessies = true;
            MilQerParlours[msg.sender].bessiesOwnedSince = MilQerParlours[msg.sender].rentedBessiesTill;
            MilQerParlours[msg.sender].owedMilk = true;
        }
    }

    function roundUpCows(uint256 _cow) external {
        require(!staQingPaused);
        require(_cow == 0 && LinQerParlours[msg.sender].ownsDaisys == true || _cow == 1 && MilQerParlours[msg.sender].ownsBessies == true);

            if (_cow == 0) {
                uint256 newTimestamp = block.timestamp + roundUpDaisysTime; //make this time variable    
                LinQerParlours[msg.sender].daisysOwnedTill = newTimestamp;
            }

            if (_cow == 1) {
                uint256 newTimestamp = block.timestamp + roundUpBessiesTime; 
                MilQerParlours[msg.sender].bessiesOwnedTill = newTimestamp;
            }
    }

    function unstaQe(uint256 _amtLinQ, uint256 _amtMilQ, uint256 _token) external { 
        require(!staQingPaused); 
        require(_token == 0 || _token == 1); 
        uint256 totalMilk = viewHowMuchMilk(msg.sender); 
 
        if (totalMilk > 0) {   
            shipMilk(); 
        } 
 
        if (_token == 0) { 
            require(_amtLinQ > 0); 
            require(LinQerParlours[msg.sender].daisys >= _amtLinQ);
            require(LinQerParlours[msg.sender].hasDaisys == true); 
            unstaQeLinQ(_amtLinQ); 
        } 
 
        if (_token == 1) { 
            require(_amtMilQ > 0); 
            require(MilQerParlours[msg.sender].bessies >= _amtMilQ);
            require(MilQerParlours[msg.sender].hasBessies == true); 
            unstaQeMilQ(_amtMilQ); 
        }     
    }

    function unstaQeLinQ(uint256 amtLinQ) internal {        
        if (LinQerParlours[msg.sender].ownsDaisys == true) {
            glinQ.approve(address(this), amtLinQ);
            glinQ.transferFrom(msg.sender, address(this), amtLinQ);
        }

        uint256 amtToClaim = checkEstMilQRewards(msg.sender);
        
        if (amtToClaim > 0) {
            shipLinQersMilQ();
        }

        uint256 transferLinQ;
        uint256 dToOddysParlour;

            if (LinQerParlours[msg.sender].daisysOwnedTill < block.timestamp && LinQerParlours[msg.sender].ownsDaisys == true){
                linQ.transfer(msg.sender, amtLinQ);
                LinQerParlours[msg.sender].daisys -= amtLinQ; 
            }

            if (LinQerParlours[msg.sender].rentedDaisysTill < block.timestamp && LinQerParlours[msg.sender].ownsDaisys == false){
                linQ.transfer(msg.sender, amtLinQ);
                LinQerParlours[msg.sender].daisys -= amtLinQ; 
            }

            if (LinQerParlours[msg.sender].daisysOwnedTill > block.timestamp && LinQerParlours[msg.sender].ownsDaisys == true){
                dToOddysParlour = (amtLinQ * daisysToOddysParlour / 100);
                transferLinQ = (amtLinQ - dToOddysParlour);
                linQ.transfer(msg.sender, transferLinQ);
                linQ.transfer(oddysParlour, dToOddysParlour);
                LinQerParlours[msg.sender].daisys -= amtLinQ;          
            }

            if (LinQerParlours[msg.sender].rentedDaisysTill > block.timestamp && LinQerParlours[msg.sender].ownsDaisys == false){
                dToOddysParlour = (amtLinQ * daisysToOddysParlour / 100);
                transferLinQ = (amtLinQ - dToOddysParlour);
                linQ.transfer(msg.sender, transferLinQ);
                linQ.transfer(oddysParlour, dToOddysParlour);
                LinQerParlours[msg.sender].daisys -= amtLinQ;  
            }   

            if (LinQerParlours[msg.sender].daisys < minLinQ) {
                LinQerParlours[msg.sender].daisys = 0;
                LinQerParlours[msg.sender].rentedDaisysSince = 0;
                LinQerParlours[msg.sender].rentedDaisysTill = 0;
                LinQerParlours[msg.sender].vitaliksMilkShipped = 0;
                LinQerParlours[msg.sender].lastShippedVitaliksMilk = 0;
                LinQerParlours[msg.sender].vitaliksMilkClaimable = 0;
                LinQerParlours[msg.sender].QompoundedMilk = 0;
                LinQerParlours[msg.sender].daisysOwnedSince = 0;
                LinQerParlours[msg.sender].daisysOwnedTill = 0;
                LinQerParlours[msg.sender].hasDaisys = false;
                LinQerParlours[msg.sender].ownsDaisys = false;
                LinQerParlours[msg.sender].owedMilk = false;
                LinQerParlours[msg.sender].shipmentsRecieved = 0;
                linQers --;
            }       
    }

    function unstaQeMilQ(uint256 amtMilQ) internal {
        uint256 transferMilQ;
        uint256 bToOddysParlour;

            if (MilQerParlours[msg.sender].bessiesOwnedTill <= block.timestamp && MilQerParlours[msg.sender].ownsBessies == true){
                transferMilQ = amtMilQ;
                milQ.transfer(msg.sender, transferMilQ);
                MilQerParlours[msg.sender].bessies -= amtMilQ;
            }

            if (MilQerParlours[msg.sender].rentedBessiesTill <= block.timestamp && MilQerParlours[msg.sender].ownsBessies == false){
                transferMilQ = amtMilQ;
                milQ.transfer(msg.sender, transferMilQ);
                MilQerParlours[msg.sender].bessies -= amtMilQ;
            }

            if (MilQerParlours[msg.sender].bessiesOwnedTill > block.timestamp && MilQerParlours[msg.sender].ownsBessies == true){
                bToOddysParlour = (amtMilQ * bessiesToOddysParlour / 100);
                transferMilQ = (amtMilQ - bToOddysParlour);
                milQ.transfer(msg.sender, transferMilQ);
                milQ.transfer(oddysParlour, bToOddysParlour);
                MilQerParlours[msg.sender].bessies -= amtMilQ;
            }

            if (MilQerParlours[msg.sender].rentedBessiesTill > block.timestamp && MilQerParlours[msg.sender].ownsBessies == false){
                bToOddysParlour = (amtMilQ * bessiesToOddysParlour / 100);
                transferMilQ = (amtMilQ - bToOddysParlour);
                milQ.transfer(msg.sender, transferMilQ);
                milQ.transfer(oddysParlour, bToOddysParlour);
                MilQerParlours[msg.sender].bessies -= amtMilQ;
            }

            if (MilQerParlours[msg.sender].bessies < minMilQ) {
                MilQerParlours[msg.sender].bessies = 0;
                MilQerParlours[msg.sender].rentedBessiesSince = 0;
                MilQerParlours[msg.sender].rentedBessiesTill = 0;
                MilQerParlours[msg.sender].milQClaimed = 0;
                MilQerParlours[msg.sender].vitaliksMilkShipped = 0;
                MilQerParlours[msg.sender].lastShippedVitaliksMilk = 0;
                MilQerParlours[msg.sender].vitaliksMilkClaimable = 0;
                MilQerParlours[msg.sender].bessiesOwnedSince = 0;
                MilQerParlours[msg.sender].bessiesOwnedTill = 0;
                MilQerParlours[msg.sender].hasBessies = false;
                MilQerParlours[msg.sender].ownsBessies = false;
                MilQerParlours[msg.sender].owedMilk = false;
                MilQerParlours[msg.sender].shipmentsRecieved = 0;
                milQers --;
            }
    }

    function howMuchMilkV3() internal {
        uint256 milkFromDaisys = 0;
        uint256 milkFromBessies = 0;
        if (LinQerParlours[msg.sender].ownsDaisys == true && LinQerParlours[msg.sender].daisysOwnedTill > block.timestamp) {
            if (LinQerParlours[msg.sender].shipmentsRecieved != totalVitaliksMilkShipments) {
                for (uint256 i = LinQerParlours[msg.sender].shipmentsRecieved; i < totalVitaliksMilkShipments; i++) {
                    milkFromDaisys += (LinQerParlours[msg.sender].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * (VitaliksMilkShipments[i+1].timestamp - LinQerParlours[msg.sender].lastShippedVitaliksMilk);
                    LinQerParlours[msg.sender].lastShippedVitaliksMilk = VitaliksMilkShipments[i+1].timestamp;
                    LinQerParlours[msg.sender].shipmentsRecieved ++;
                }
            }
            
            if (LinQerParlours[msg.sender].shipmentsRecieved == totalVitaliksMilkShipments){
                milkFromDaisys += (LinQerParlours[msg.sender].daisys / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].daisysOutput * (block.timestamp - LinQerParlours[msg.sender].lastShippedVitaliksMilk);
                LinQerParlours[msg.sender].lastShippedVitaliksMilk = block.timestamp;
            }
        }

        if (LinQerParlours[msg.sender].ownsDaisys == false && LinQerParlours[msg.sender].hasDaisys == true && LinQerParlours[msg.sender].rentedDaisysTill > block.timestamp) {
            if (LinQerParlours[msg.sender].shipmentsRecieved != totalVitaliksMilkShipments) {
                for (uint256 i = LinQerParlours[msg.sender].shipmentsRecieved; i < totalVitaliksMilkShipments; i++) {
                    milkFromDaisys += (LinQerParlours[msg.sender].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * (VitaliksMilkShipments[i+1].timestamp - LinQerParlours[msg.sender].lastShippedVitaliksMilk);
                    LinQerParlours[msg.sender].lastShippedVitaliksMilk = VitaliksMilkShipments[i+1].timestamp;
                    LinQerParlours[msg.sender].shipmentsRecieved ++;
                }
            }
            
            if (LinQerParlours[msg.sender].shipmentsRecieved == totalVitaliksMilkShipments){
                milkFromDaisys += (LinQerParlours[msg.sender].daisys / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].daisysOutput * (block.timestamp - LinQerParlours[msg.sender].lastShippedVitaliksMilk);
                LinQerParlours[msg.sender].lastShippedVitaliksMilk = block.timestamp;
            }
        }

        if (LinQerParlours[msg.sender].ownsDaisys == true && LinQerParlours[msg.sender].daisysOwnedTill <= block.timestamp && LinQerParlours[msg.sender].owedMilk == true) {
            if(LinQerParlours[msg.sender].shipmentsRecieved < totalVitaliksMilkShipments) { 
                for (uint256 i = LinQerParlours[msg.sender].shipmentsRecieved; i < totalVitaliksMilkShipments; i++) {

                    if (LinQerParlours[msg.sender].daisysOwnedTill > VitaliksMilkShipments[i+1].timestamp) {
                        milkFromDaisys += (LinQerParlours[msg.sender].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * (VitaliksMilkShipments[i+1].timestamp - LinQerParlours[msg.sender].lastShippedVitaliksMilk);
                        LinQerParlours[msg.sender].lastShippedVitaliksMilk = VitaliksMilkShipments[i+1].timestamp;
                        LinQerParlours[msg.sender].shipmentsRecieved ++;
                    }
            
                    if (LinQerParlours[msg.sender].daisysOwnedTill <= VitaliksMilkShipments[i+1].timestamp) {
                        uint256 time = LinQerParlours[msg.sender].daisysOwnedTill - LinQerParlours[msg.sender].lastShippedVitaliksMilk;
                        milkFromDaisys += (LinQerParlours[msg.sender].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * time;
                        LinQerParlours[msg.sender].lastShippedVitaliksMilk = LinQerParlours[msg.sender].daisysOwnedTill;
                        LinQerParlours[msg.sender].owedMilk = false;
                        break;   
                    }   
                }
            }

            if (LinQerParlours[msg.sender].shipmentsRecieved == totalVitaliksMilkShipments){
                milkFromDaisys += (LinQerParlours[msg.sender].daisys / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].daisysOutput * (LinQerParlours[msg.sender].daisysOwnedTill - LinQerParlours[msg.sender].lastShippedVitaliksMilk);
                LinQerParlours[msg.sender].lastShippedVitaliksMilk = LinQerParlours[msg.sender].daisysOwnedTill;
                LinQerParlours[msg.sender].owedMilk = false;
            } 
        }

        if (LinQerParlours[msg.sender].ownsDaisys == false && LinQerParlours[msg.sender].hasDaisys == true && LinQerParlours[msg.sender].rentedDaisysTill <= block.timestamp && LinQerParlours[msg.sender].owedMilk == true) {
            if(LinQerParlours[msg.sender].shipmentsRecieved < totalVitaliksMilkShipments){
                for (uint256 i = LinQerParlours[msg.sender].shipmentsRecieved; i < totalVitaliksMilkShipments; i++) {
                    if (LinQerParlours[msg.sender].rentedDaisysTill > VitaliksMilkShipments[i+1].timestamp) {
                        milkFromDaisys += (LinQerParlours[msg.sender].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * (VitaliksMilkShipments[i+1].timestamp - LinQerParlours[msg.sender].lastShippedVitaliksMilk);
                        LinQerParlours[msg.sender].lastShippedVitaliksMilk = VitaliksMilkShipments[i+1].timestamp;
                        LinQerParlours[msg.sender].shipmentsRecieved ++;
                    }
         
                    if (LinQerParlours[msg.sender].rentedDaisysTill <= VitaliksMilkShipments[i+1].timestamp && LinQerParlours[msg.sender].owedMilk == true){
                        uint256 time = LinQerParlours[msg.sender].rentedDaisysTill - LinQerParlours[msg.sender].lastShippedVitaliksMilk;
                        milkFromDaisys += (LinQerParlours[msg.sender].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * time;
                        LinQerParlours[msg.sender].lastShippedVitaliksMilk = LinQerParlours[msg.sender].rentedDaisysTill;
                        LinQerParlours[msg.sender].owedMilk = false;
                        break;   
                    }   
                }  
            }

            if (LinQerParlours[msg.sender].shipmentsRecieved == totalVitaliksMilkShipments){
                milkFromDaisys += (LinQerParlours[msg.sender].daisys / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].daisysOutput * (LinQerParlours[msg.sender].rentedDaisysTill - LinQerParlours[msg.sender].lastShippedVitaliksMilk);
                LinQerParlours[msg.sender].lastShippedVitaliksMilk = LinQerParlours[msg.sender].rentedDaisysTill;
                LinQerParlours[msg.sender].owedMilk = false;
            }       
        }

        if (MilQerParlours[msg.sender].ownsBessies == true && MilQerParlours[msg.sender].bessiesOwnedTill > block.timestamp) {
            if (MilQerParlours[msg.sender].shipmentsRecieved != totalVitaliksMilkShipments) {
                for (uint256 i = MilQerParlours[msg.sender].shipmentsRecieved; i < totalVitaliksMilkShipments; i++) {
                    milkFromBessies += (MilQerParlours[msg.sender].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * (VitaliksMilkShipments[i+1].timestamp - MilQerParlours[msg.sender].lastShippedVitaliksMilk);
                    MilQerParlours[msg.sender].lastShippedVitaliksMilk = VitaliksMilkShipments[i+1].timestamp;
                    MilQerParlours[msg.sender].shipmentsRecieved ++;
                }
            }

            if (MilQerParlours[msg.sender].shipmentsRecieved == totalVitaliksMilkShipments) {
                milkFromBessies += (MilQerParlours[msg.sender].bessies / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].bessiesOutput * (block.timestamp - MilQerParlours[msg.sender].lastShippedVitaliksMilk);
                MilQerParlours[msg.sender].lastShippedVitaliksMilk = block.timestamp;
            }
        }

        if (MilQerParlours[msg.sender].ownsBessies == false && MilQerParlours[msg.sender].hasBessies == true && MilQerParlours[msg.sender].rentedBessiesTill > block.timestamp && MilQerParlours[msg.sender].owedMilk == true) {
            if (MilQerParlours[msg.sender].shipmentsRecieved != totalVitaliksMilkShipments) {
                for (uint256 i = MilQerParlours[msg.sender].shipmentsRecieved; i < totalVitaliksMilkShipments; i++) {
                    milkFromBessies += (MilQerParlours[msg.sender].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * (VitaliksMilkShipments[i+1].timestamp - MilQerParlours[msg.sender].lastShippedVitaliksMilk);
                    MilQerParlours[msg.sender].lastShippedVitaliksMilk = VitaliksMilkShipments[i+1].timestamp;
                    MilQerParlours[msg.sender].shipmentsRecieved ++;
                }
            }

            if (MilQerParlours[msg.sender].shipmentsRecieved == totalVitaliksMilkShipments){
                milkFromBessies += (MilQerParlours[msg.sender].bessies / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].bessiesOutput * (block.timestamp - MilQerParlours[msg.sender].lastShippedVitaliksMilk);
                MilQerParlours[msg.sender].lastShippedVitaliksMilk = block.timestamp;
            }
        }
        
        if (MilQerParlours[msg.sender].ownsBessies == true && MilQerParlours[msg.sender].bessiesOwnedTill <= block.timestamp && MilQerParlours[msg.sender].owedMilk == true) { 
            if (MilQerParlours[msg.sender].shipmentsRecieved < totalVitaliksMilkShipments) {
                for (uint256 i = MilQerParlours[msg.sender].shipmentsRecieved; i < totalVitaliksMilkShipments; i++) {
                    if (MilQerParlours[msg.sender].bessiesOwnedTill > VitaliksMilkShipments[i+1].timestamp) {
                        milkFromBessies += (MilQerParlours[msg.sender].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * (VitaliksMilkShipments[i+1].timestamp - MilQerParlours[msg.sender].lastShippedVitaliksMilk);
                        MilQerParlours[msg.sender].lastShippedVitaliksMilk = VitaliksMilkShipments[i+1].timestamp;
                        MilQerParlours[msg.sender].shipmentsRecieved ++;
                    }
            
                    if (MilQerParlours[msg.sender].bessiesOwnedTill <= VitaliksMilkShipments[i+1].timestamp){
                        uint256 time = MilQerParlours[msg.sender].bessiesOwnedTill - MilQerParlours[msg.sender].lastShippedVitaliksMilk;
                        milkFromBessies += (MilQerParlours[msg.sender].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * time;
                        MilQerParlours[msg.sender].lastShippedVitaliksMilk = MilQerParlours[msg.sender].bessiesOwnedTill;
                        MilQerParlours[msg.sender].owedMilk = false;
                        break;   
                    }   
                }
            }

            if (MilQerParlours[msg.sender].shipmentsRecieved == totalVitaliksMilkShipments){
                milkFromBessies += (MilQerParlours[msg.sender].bessies / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].bessiesOutput * (MilQerParlours[msg.sender].bessiesOwnedTill - MilQerParlours[msg.sender].lastShippedVitaliksMilk);
                MilQerParlours[msg.sender].lastShippedVitaliksMilk = MilQerParlours[msg.sender].bessiesOwnedTill;
                MilQerParlours[msg.sender].owedMilk = false;
            }    
        }
  
        if (MilQerParlours[msg.sender].ownsBessies == false && MilQerParlours[msg.sender].hasBessies == true && MilQerParlours[msg.sender].rentedBessiesTill <= block.timestamp  && MilQerParlours[msg.sender].owedMilk == true) {
            if(MilQerParlours[msg.sender].shipmentsRecieved != totalVitaliksMilkShipments){
                for (uint256 i = MilQerParlours[msg.sender].shipmentsRecieved; i < totalVitaliksMilkShipments; i++) {
                    if (MilQerParlours[msg.sender].rentedBessiesTill > VitaliksMilkShipments[i+1].timestamp) {
                        milkFromBessies += (MilQerParlours[msg.sender].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * (VitaliksMilkShipments[i+1].timestamp - MilQerParlours[msg.sender].lastShippedVitaliksMilk);
                        MilQerParlours[msg.sender].lastShippedVitaliksMilk = VitaliksMilkShipments[i+1].timestamp;
                        MilQerParlours[msg.sender].shipmentsRecieved ++;
                    }
        
                    if (MilQerParlours[msg.sender].rentedBessiesTill <= VitaliksMilkShipments[i+1].timestamp){
                        uint256 time = MilQerParlours[msg.sender].rentedBessiesTill - MilQerParlours[msg.sender].lastShippedVitaliksMilk;
                        milkFromBessies += (MilQerParlours[msg.sender].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * time;
                        MilQerParlours[msg.sender].lastShippedVitaliksMilk = MilQerParlours[msg.sender].rentedBessiesTill;
                        MilQerParlours[msg.sender].owedMilk = false;
                        break;   
                    }   
                }  
            }

            if (MilQerParlours[msg.sender].shipmentsRecieved == totalVitaliksMilkShipments){
                milkFromBessies += (MilQerParlours[msg.sender].bessies / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].bessiesOutput * (MilQerParlours[msg.sender].rentedBessiesTill - MilQerParlours[msg.sender].lastShippedVitaliksMilk);
                MilQerParlours[msg.sender].lastShippedVitaliksMilk = MilQerParlours[msg.sender].rentedBessiesTill;
                MilQerParlours[msg.sender].owedMilk = false;
            }       
        }

        LinQerParlours[msg.sender].vitaliksMilkClaimable += milkFromDaisys;
        MilQerParlours[msg.sender].vitaliksMilkClaimable += milkFromBessies;
        daisysMilkProduced += milkFromDaisys;
        bessiesMilkProduced += milkFromBessies;      
    }

    function viewHowMuchMilk(address user) public view returns (uint256 Total) {
        uint256 daisysShipped = LinQerParlours[user].shipmentsRecieved;
        uint256 daisysTimeShipped = LinQerParlours[user].lastShippedVitaliksMilk;
        uint256 bessiesShipped = MilQerParlours[user].shipmentsRecieved;
        uint256 bessiesTimeShipped = MilQerParlours[user].lastShippedVitaliksMilk;
        uint256 milkFromDaisys = 0;
        uint256 milkFromBessies = 0;

        if (LinQerParlours[user].ownsDaisys == true && LinQerParlours[user].daisysOwnedTill > block.timestamp) {
            if (daisysShipped != totalVitaliksMilkShipments) {
                for (uint256 i = daisysShipped; i < totalVitaliksMilkShipments; i++) {
                    milkFromDaisys += (LinQerParlours[user].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * (VitaliksMilkShipments[i+1].timestamp - daisysTimeShipped);
                    daisysTimeShipped = VitaliksMilkShipments[i+1].timestamp;
                    daisysShipped ++;
                }
            }
            
            if (daisysShipped == totalVitaliksMilkShipments){
                milkFromDaisys += (LinQerParlours[user].daisys / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].daisysOutput * (block.timestamp - daisysTimeShipped);
            }
        }

        if (LinQerParlours[user].ownsDaisys == false && LinQerParlours[user].hasDaisys == true && LinQerParlours[user].rentedDaisysTill > block.timestamp) {
            if (daisysShipped != totalVitaliksMilkShipments) {
                for (uint256 i = daisysShipped; i < totalVitaliksMilkShipments; i++) {
                    milkFromDaisys += (LinQerParlours[user].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * (VitaliksMilkShipments[i+1].timestamp - daisysTimeShipped);
                    daisysTimeShipped = VitaliksMilkShipments[i+1].timestamp;
                    daisysShipped ++;
                }
            }
            
            if (daisysShipped == totalVitaliksMilkShipments){
                milkFromDaisys += (LinQerParlours[user].daisys / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].daisysOutput * (block.timestamp - daisysTimeShipped);
            }
        }

        if (LinQerParlours[user].ownsDaisys == true && LinQerParlours[user].daisysOwnedTill <= block.timestamp && LinQerParlours[user].owedMilk == true) {
            if(daisysShipped < totalVitaliksMilkShipments) { 
                for (uint256 i = daisysShipped; i < totalVitaliksMilkShipments; i++) {

                    if (LinQerParlours[user].daisysOwnedTill > VitaliksMilkShipments[i+1].timestamp) {
                        milkFromDaisys += (LinQerParlours[user].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * (VitaliksMilkShipments[i+1].timestamp - daisysTimeShipped);
                        daisysTimeShipped = VitaliksMilkShipments[i+1].timestamp;
                        daisysShipped ++;
                    }
            
                    if (LinQerParlours[user].daisysOwnedTill <= VitaliksMilkShipments[i+1].timestamp) {
                        uint256 time = LinQerParlours[user].daisysOwnedTill - daisysTimeShipped;
                        milkFromDaisys += (LinQerParlours[user].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * time;
                        break;   
                    }   
                }
            }

            if (daisysShipped == totalVitaliksMilkShipments){
                milkFromDaisys += (LinQerParlours[user].daisys / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].daisysOutput * (LinQerParlours[user].daisysOwnedTill - daisysTimeShipped);
            } 
        }

        if (LinQerParlours[user].ownsDaisys == false && LinQerParlours[user].hasDaisys == true && LinQerParlours[user].rentedDaisysTill <= block.timestamp && LinQerParlours[user].owedMilk == true) {
            if(daisysShipped < totalVitaliksMilkShipments){
                for (uint256 i = daisysShipped; i < totalVitaliksMilkShipments; i++) {
                    if (LinQerParlours[user].rentedDaisysTill > VitaliksMilkShipments[i+1].timestamp) {
                        milkFromDaisys += (LinQerParlours[user].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * (VitaliksMilkShipments[i+1].timestamp - daisysTimeShipped);
                        daisysTimeShipped = VitaliksMilkShipments[i+1].timestamp;
                        daisysShipped ++;
                    }
         
                    if (LinQerParlours[user].rentedDaisysTill <= VitaliksMilkShipments[i+1].timestamp && LinQerParlours[user].owedMilk == true){
                        uint256 time = LinQerParlours[user].rentedDaisysTill - daisysTimeShipped;
                        milkFromDaisys += (LinQerParlours[user].daisys / 1000000000000000000) * VitaliksMilkShipments[i].daisysOutput * time;
                        break;   
                    }   
                }  
            }

            if (daisysShipped == totalVitaliksMilkShipments){
                milkFromDaisys += (LinQerParlours[user].daisys / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].daisysOutput * (LinQerParlours[user].rentedDaisysTill - daisysTimeShipped);
            }       
        }

        if (MilQerParlours[user].ownsBessies == true && MilQerParlours[user].bessiesOwnedTill > block.timestamp) {
            if (bessiesShipped != totalVitaliksMilkShipments) {
                for (uint256 i = bessiesShipped; i < totalVitaliksMilkShipments; i++) {
                    milkFromBessies += (MilQerParlours[user].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * (VitaliksMilkShipments[i+1].timestamp - bessiesTimeShipped);
                    bessiesTimeShipped = VitaliksMilkShipments[i+1].timestamp;
                    bessiesShipped ++;
                }
            }

            if (bessiesShipped == totalVitaliksMilkShipments) {
                milkFromBessies += (MilQerParlours[user].bessies / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].bessiesOutput * (block.timestamp - bessiesTimeShipped);
            }
        }

        if (MilQerParlours[user].ownsBessies == false && MilQerParlours[user].hasBessies == true && MilQerParlours[user].rentedBessiesTill > block.timestamp && MilQerParlours[user].owedMilk == true) {
            if (bessiesShipped != totalVitaliksMilkShipments) {
                for (uint256 i = bessiesShipped; i < totalVitaliksMilkShipments; i++) {
                    milkFromBessies += (MilQerParlours[user].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * (VitaliksMilkShipments[i+1].timestamp - bessiesTimeShipped);
                    bessiesTimeShipped = VitaliksMilkShipments[i+1].timestamp;
                    bessiesShipped ++;
                }
            }

            if (bessiesShipped == totalVitaliksMilkShipments){
                milkFromBessies += (MilQerParlours[user].bessies / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].bessiesOutput * (block.timestamp - bessiesTimeShipped);
            }

        }

        if (MilQerParlours[user].ownsBessies == true && MilQerParlours[user].bessiesOwnedTill <= block.timestamp) { 
            if (bessiesShipped != totalVitaliksMilkShipments) {
                for (uint256 i = bessiesShipped; i < totalVitaliksMilkShipments; i++) {
                    if (MilQerParlours[user].bessiesOwnedTill > VitaliksMilkShipments[i+1].timestamp) {
                        milkFromBessies += (MilQerParlours[user].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * (VitaliksMilkShipments[i+1].timestamp - bessiesTimeShipped);
                        bessiesTimeShipped = VitaliksMilkShipments[i+1].timestamp;
                        bessiesShipped ++;
                    }
            
                    if (MilQerParlours[user].bessiesOwnedTill <= VitaliksMilkShipments[i+1].timestamp && MilQerParlours[user].owedMilk == true){
                        uint256 time = MilQerParlours[user].bessiesOwnedTill - bessiesTimeShipped;
                        milkFromBessies += (MilQerParlours[user].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * time;
                        break;   
                    }   
                }
            }

            if (bessiesShipped == totalVitaliksMilkShipments){
                milkFromBessies += (MilQerParlours[user].bessies / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].bessiesOutput * (MilQerParlours[user].bessiesOwnedTill - bessiesTimeShipped);
            }    
        }

        if (MilQerParlours[user].ownsBessies == false && MilQerParlours[user].hasBessies == true && MilQerParlours[user].rentedBessiesTill <= block.timestamp) {
            if(bessiesShipped != totalVitaliksMilkShipments){
                for (uint256 i = bessiesShipped; i < totalVitaliksMilkShipments; i++) {
                    if (MilQerParlours[user].rentedBessiesTill > VitaliksMilkShipments[i+1].timestamp) {
                        milkFromBessies += (MilQerParlours[user].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * (VitaliksMilkShipments[i+1].timestamp - bessiesTimeShipped);
                        bessiesTimeShipped = VitaliksMilkShipments[i+1].timestamp;
                        bessiesShipped ++;
                    }
        
                    if (MilQerParlours[user].rentedBessiesTill <= VitaliksMilkShipments[i+1].timestamp && MilQerParlours[user].owedMilk == true){
                        uint256 time = MilQerParlours[user].rentedBessiesTill - bessiesTimeShipped;
                        milkFromBessies += (MilQerParlours[user].bessies / 1000000000000000000) * VitaliksMilkShipments[i].bessiesOutput * time;
                        break;   
                    }   
                }  
            }

            if (bessiesShipped == totalVitaliksMilkShipments){
                milkFromBessies += (MilQerParlours[user].bessies / 1000000000000000000) * VitaliksMilkShipments[totalVitaliksMilkShipments].bessiesOutput * (MilQerParlours[user].rentedBessiesTill - bessiesTimeShipped);
            }       
        }

        Total = milkFromDaisys + milkFromBessies; 
        return (Total);       
    }

    function QompoundLinQ(uint256 slippage) external {  
        if (LinQerParlours[msg.sender].hasDaisys == true){
            shipLinQersMilQ();
        }

        howMuchMilkV3();  
  
        uint256 linqAmt = LinQerParlours[msg.sender].vitaliksMilkClaimable; 
        uint256 milqAmt = MilQerParlours[msg.sender].vitaliksMilkClaimable; 
        uint256 _ethAmount = linqAmt + milqAmt; 
  
        address[] memory path = new address[](2);  
        path[0] = uniswapRouter.WETH();  
        path[1] = swapLinq;  
  
        uint256[] memory amountsOut = uniswapRouter.getAmountsOut(_ethAmount, path);  
        uint256 minLinQAmount = amountsOut[1];   
  
      
        uint256 beforeBalance = IERC20(linQ).balanceOf(address(this));  
        uint256 amountSlip = (minLinQAmount * slippage) / 100;  
        uint256 amountAfterSlip = minLinQAmount - amountSlip;  
  
      
        uniswapRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: _ethAmount}(  
            amountAfterSlip,  
            path,  
            address(this),  
            block.timestamp  
        );  
  
        uint256 afterBalance = IERC20(linQ).balanceOf(address(this));  
  
        uint256 boughtAmount = afterBalance - beforeBalance;

        if (LinQerParlours[msg.sender].ownsDaisys == true) {
            glinQ.transfer(msg.sender, boughtAmount);
        }

        if (LinQerParlours[msg.sender].hasDaisys == true) { 
            LinQerParlours[msg.sender].daisys += boughtAmount;  
            LinQerParlours[msg.sender].QompoundedMilk += _ethAmount;  
            LinQerParlours[msg.sender].vitaliksMilkClaimable = 0; 
            MilQerParlours[msg.sender].vitaliksMilkClaimable = 0;
        }

        if (LinQerParlours[msg.sender].hasDaisys == false) {
            LinQerParlours[msg.sender].daisys += boughtAmount;
            LinQerParlours[msg.sender].rentedDaisysSince = block.timestamp;
            LinQerParlours[msg.sender].rentedDaisysTill = block.timestamp + daisysRentalTime; 
            LinQerParlours[msg.sender].daisysOwnedSince = 0;
            LinQerParlours[msg.sender].daisysOwnedTill = 32503680000;
            LinQerParlours[msg.sender].hasDaisys = true;
            LinQerParlours[msg.sender].ownsDaisys = false;
            LinQerParlours[msg.sender].vitaliksMilkShipped = 0;
            LinQerParlours[msg.sender].QompoundedMilk = 0;
            LinQerParlours[msg.sender].lastShippedVitaliksMilk = block.timestamp;
            LinQerParlours[msg.sender].shipmentsRecieved = totalVitaliksMilkShipments;
            LinQerParlours[msg.sender].vitaliksMilkClaimable = 0;
            LinQerParlours[msg.sender].owedMilk = true;
            LpClaims[msg.sender].lastClaimed = totalMilQClaimed;
            LpClaims[msg.sender].totalClaimed = 0;
            MilQerParlours[msg.sender].vitaliksMilkClaimable = 0;
            daisys += boughtAmount;
            linQers ++;
        }

        daisys += boughtAmount;
        vitaliksMilkQompounded += _ethAmount;
        emit Qompound(msg.sender, _ethAmount, boughtAmount);
    }
        
    function shipMilk() public {   
          
        howMuchMilkV3();

        uint256 linq = LinQerParlours[msg.sender].vitaliksMilkClaimable;
        uint256 lp = MilQerParlours[msg.sender].vitaliksMilkClaimable;
        uint256 amount = linq + lp;

        require(address(this).balance >= amount);

        payable(msg.sender).transfer(amount);

        LinQerParlours[msg.sender].vitaliksMilkShipped += linq;
        MilQerParlours[msg.sender].vitaliksMilkShipped += lp;
        LinQerParlours[msg.sender].vitaliksMilkClaimable = 0;
        MilQerParlours[msg.sender].vitaliksMilkClaimable = 0;
        vitaliksMilkShipped += amount;

        if (amount > highClaimThreshold){
            emit highClaim(msg.sender,amount);
        }

        if(address(this).balance < lowBalanceThreshold){
            emit lowBalance(block.timestamp,address(this).balance);
        }    
    }

    function shipFarmMilQ() external onlyOwner {

        uint256 beforeBalance = IERC20(milQ).balanceOf(address(this)); 

        ILINQ.claim();

        uint256 afterBalance = IERC20(milQ).balanceOf(address(this));

        uint256 claimed = afterBalance - beforeBalance;

         uint256 PerLinQ = (claimed * 10**18) / daisys;

        uint256 index = MilqShipments;

        MilQShipments[index] = MilQShipment(block.timestamp, claimed, daisys,PerLinQ);

        MilqShipments++;

        totalMilQClaimed += claimed;
    }

    function shipLinQersMilQ() public {  
        uint256 CurrrentDis = totalMilQClaimed - LpClaims[msg.sender].lastClaimed;  
        uint256 tokensStaked = LinQerParlours[msg.sender].daisys;  
         uint256 divDaisys = daisys / 10**18; 
        uint256 percentOwned = ((tokensStaked * 100) / divDaisys); 
        uint256 userDistro = CurrrentDis * (percentOwned / 100); 
        uint256 userDistroAmount = userDistro / 10**18; 
        milQ.transfer(msg.sender, userDistroAmount); 
  
        MilQerParlours[msg.sender].milQClaimed += userDistroAmount;
        LpClaims[msg.sender].lastClaimed = totalMilQClaimed;  
        LpClaims[msg.sender].totalClaimed += userDistroAmount;  
    }  
  
    function checkEstMilQRewards(address user) public view returns (uint256){  
        uint256 CurrrentDis = totalMilQClaimed - LpClaims[user].lastClaimed;  
        uint256 tokensStaked = LinQerParlours[user].daisys;  
        uint256 divDaisys = daisys / 10**18; 
        uint256 percentOwned = ((tokensStaked * 100) / divDaisys); 
        uint256 userDistro = CurrrentDis * (percentOwned / 100); 
        uint256 userDistroAmount = userDistro / 10**18; 
 
        return userDistroAmount;  
    }

    receive() external payable {}
}

// SPDX-License-Identifier: MIT
// A New Governance Paradigm Brought To You By Linq
pragma solidity ^0.8.9;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
contract gLinq is Ownable, ERC20 {
    address public LinqStakingContract;
    constructor(address staking_contract) ERC20("gLinq", "gLINQ") {
        _mint(msg.sender, 100000000 * 10**18);
        LinqStakingContract = staking_contract;
    }
    function setStakingContract(address new_contract) public onlyOwner {
        LinqStakingContract = new_contract;
    } 
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal override {
        if (from != LinqStakingContract && to != LinqStakingContract) {
            require(
                false,
                "gLinq : No transfers allowed unless to or from staking contract"
            );
        } else {
            super._transfer(from, to, amount);
        }
    }
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }
    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }
    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }
    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }
    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }
    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }
    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    uint256 private _totalSupply;
    string private _name;
    string private _symbol;
    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }
    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }
    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }
    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }
    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }
    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }
    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }
    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }
    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }
    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }
    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }
    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }
        return true;
    }
    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        _beforeTokenTransfer(from, to, amount);
        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }
        emit Transfer(from, to, amount);
        _afterTokenTransfer(from, to, amount);
    }
    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
        _beforeTokenTransfer(address(0), account, amount);
        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);
        _afterTokenTransfer(address(0), account, amount);
    }
    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
        _beforeTokenTransfer(account, address(0), amount);
        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }
        emit Transfer(account, address(0), amount);
        _afterTokenTransfer(account, address(0), amount);
    }
    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }
    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}
    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);
    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);
    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);
    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);
    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);
    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);
    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);
    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);
    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// File: contracts/interfaces/IUniswapV2Pair.sol

pragma solidity >=0.5.0;

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

// File: contracts/interfaces/IUniswapV2ERC20.sol

pragma solidity >=0.5.0;

interface IUniswapV2ERC20 {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
}

// File: contracts/libraries/SafeMath.sol

pragma solidity =0.5.16;

// a library for performing overflow-safe math, courtesy of DappHub (https://github.com/dapphub/ds-math)

library SafeMath {
    function add(uint x, uint y) internal pure returns (uint z) {
        require((z = x + y) >= x, 'ds-math-add-overflow');
    }

    function sub(uint x, uint y) internal pure returns (uint z) {
        require((z = x - y) <= x, 'ds-math-sub-underflow');
    }

    function mul(uint x, uint y) internal pure returns (uint z) {
        require(y == 0 || (z = x * y) / y == x, 'ds-math-mul-overflow');
    }
}

// File: contracts/UniswapV2ERC20.sol

pragma solidity =0.5.16;



contract UniswapV2ERC20 is IUniswapV2ERC20 {
    using SafeMath for uint;

    string public constant name = 'Uniswap V2';
    string public constant symbol = 'UNI-V2';
    uint8 public constant decimals = 18;
    uint  public totalSupply;
    mapping(address => uint) public balanceOf;
    mapping(address => mapping(address => uint)) public allowance;

    bytes32 public DOMAIN_SEPARATOR;
    // keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
    bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
    mapping(address => uint) public nonces;

    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    constructor() public {
        uint chainId;
        assembly {
            chainId := chainid
        }
        DOMAIN_SEPARATOR = keccak256(
            abi.encode(
                keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'),
                keccak256(bytes(name)),
                keccak256(bytes('1')),
                chainId,
                address(this)
            )
        );
    }

    function _mint(address to, uint value) internal {
        totalSupply = totalSupply.add(value);
        balanceOf[to] = balanceOf[to].add(value);
        emit Transfer(address(0), to, value);
    }

    function _burn(address from, uint value) internal {
        balanceOf[from] = balanceOf[from].sub(value);
        totalSupply = totalSupply.sub(value);
        emit Transfer(from, address(0), value);
    }

    function _approve(address owner, address spender, uint value) private {
        allowance[owner][spender] = value;
        emit Approval(owner, spender, value);
    }

    function _transfer(address from, address to, uint value) private {
        balanceOf[from] = balanceOf[from].sub(value);
        balanceOf[to] = balanceOf[to].add(value);
        emit Transfer(from, to, value);
    }

    function approve(address spender, uint value) external returns (bool) {
        _approve(msg.sender, spender, value);
        return true;
    }

    function transfer(address to, uint value) external returns (bool) {
        _transfer(msg.sender, to, value);
        return true;
    }

    function transferFrom(address from, address to, uint value) external returns (bool) {
        if (allowance[from][msg.sender] != uint(-1)) {
            allowance[from][msg.sender] = allowance[from][msg.sender].sub(value);
        }
        _transfer(from, to, value);
        return true;
    }

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external {
        require(deadline >= block.timestamp, 'UniswapV2: EXPIRED');
        bytes32 digest = keccak256(
            abi.encodePacked(
                '\x19\x01',
                DOMAIN_SEPARATOR,
                keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
            )
        );
        address recoveredAddress = ecrecover(digest, v, r, s);
        require(recoveredAddress != address(0) && recoveredAddress == owner, 'UniswapV2: INVALID_SIGNATURE');
        _approve(owner, spender, value);
    }
}

// File: contracts/libraries/Math.sol

pragma solidity =0.5.16;

// a library for performing various math operations

library Math {
    function min(uint x, uint y) internal pure returns (uint z) {
        z = x < y ? x : y;
    }

    // babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
    function sqrt(uint y) internal pure returns (uint z) {
        if (y > 3) {
            z = y;
            uint x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }
}

// File: contracts/libraries/UQ112x112.sol

pragma solidity =0.5.16;

// a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format))

// range: [0, 2**112 - 1]
// resolution: 1 / 2**112

library UQ112x112 {
    uint224 constant Q112 = 2**112;

    // encode a uint112 as a UQ112x112
    function encode(uint112 y) internal pure returns (uint224 z) {
        z = uint224(y) * Q112; // never overflows
    }

    // divide a UQ112x112 by a uint112, returning a UQ112x112
    function uqdiv(uint224 x, uint112 y) internal pure returns (uint224 z) {
        z = x / uint224(y);
    }
}

// File: contracts/interfaces/IERC20.sol

pragma solidity >=0.5.0;

interface IERC20 {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external view returns (string memory);
    function symbol() external view returns (string memory);
    function decimals() external view returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);
}

// File: contracts/interfaces/IUniswapV2Factory.sol

pragma solidity >=0.5.0;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

    function createPair(address tokenA, address tokenB) external returns (address pair);

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

// File: contracts/interfaces/IUniswapV2Callee.sol

pragma solidity >=0.5.0;

interface IUniswapV2Callee {
    function uniswapV2Call(address sender, uint amount0, uint amount1, bytes calldata data) external;
}

// File: contracts/UniswapV2Pair.sol

pragma solidity =0.5.16;








contract UniswapV2Pair is IUniswapV2Pair, UniswapV2ERC20 {
    using SafeMath  for uint;
    using UQ112x112 for uint224;

    uint public constant MINIMUM_LIQUIDITY = 10**3;
    bytes4 private constant SELECTOR = bytes4(keccak256(bytes('transfer(address,uint256)')));

    address public factory;
    address public token0;
    address public token1;

    uint112 private reserve0;           // uses single storage slot, accessible via getReserves
    uint112 private reserve1;           // uses single storage slot, accessible via getReserves
    uint32  private blockTimestampLast; // uses single storage slot, accessible via getReserves

    uint public price0CumulativeLast;
    uint public price1CumulativeLast;
    uint public kLast; // reserve0 * reserve1, as of immediately after the most recent liquidity event

    uint private unlocked = 1;
    modifier lock() {
        require(unlocked == 1, 'UniswapV2: LOCKED');
        unlocked = 0;
        _;
        unlocked = 1;
    }

    function getReserves() public view returns (uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast) {
        _reserve0 = reserve0;
        _reserve1 = reserve1;
        _blockTimestampLast = blockTimestampLast;
    }

    function _safeTransfer(address token, address to, uint value) private {
        (bool success, bytes memory data) = token.call(abi.encodeWithSelector(SELECTOR, to, value));
        require(success && (data.length == 0 || abi.decode(data, (bool))), 'UniswapV2: TRANSFER_FAILED');
    }

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    constructor() public {
        factory = msg.sender;
    }

    // called once by the factory at time of deployment
    function initialize(address _token0, address _token1) external {
        require(msg.sender == factory, 'UniswapV2: FORBIDDEN'); // sufficient check
        token0 = _token0;
        token1 = _token1;
    }

    // update reserves and, on the first call per block, price accumulators
    function _update(uint balance0, uint balance1, uint112 _reserve0, uint112 _reserve1) private {
        require(balance0 <= uint112(-1) && balance1 <= uint112(-1), 'UniswapV2: OVERFLOW');
        uint32 blockTimestamp = uint32(block.timestamp % 2**32);
        uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
        if (timeElapsed > 0 && _reserve0 != 0 && _reserve1 != 0) {
            // * never overflows, and + overflow is desired
            price0CumulativeLast += uint(UQ112x112.encode(_reserve1).uqdiv(_reserve0)) * timeElapsed;
            price1CumulativeLast += uint(UQ112x112.encode(_reserve0).uqdiv(_reserve1)) * timeElapsed;
        }
        reserve0 = uint112(balance0);
        reserve1 = uint112(balance1);
        blockTimestampLast = blockTimestamp;
        emit Sync(reserve0, reserve1);
    }

    // if fee is on, mint liquidity equivalent to 1/6th of the growth in sqrt(k)
    function _mintFee(uint112 _reserve0, uint112 _reserve1) private returns (bool feeOn) {
        address feeTo = IUniswapV2Factory(factory).feeTo();
        feeOn = feeTo != address(0);
        uint _kLast = kLast; // gas savings
        if (feeOn) {
            if (_kLast != 0) {
                uint rootK = Math.sqrt(uint(_reserve0).mul(_reserve1));
                uint rootKLast = Math.sqrt(_kLast);
                if (rootK > rootKLast) {
                    uint numerator = totalSupply.mul(rootK.sub(rootKLast));
                    uint denominator = rootK.mul(5).add(rootKLast);
                    uint liquidity = numerator / denominator;
                    if (liquidity > 0) _mint(feeTo, liquidity);
                }
            }
        } else if (_kLast != 0) {
            kLast = 0;
        }
    }

    // this low-level function should be called from a contract which performs important safety checks
    function mint(address to) external lock returns (uint liquidity) {
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        uint balance0 = IERC20(token0).balanceOf(address(this));
        uint balance1 = IERC20(token1).balanceOf(address(this));
        uint amount0 = balance0.sub(_reserve0);
        uint amount1 = balance1.sub(_reserve1);

        bool feeOn = _mintFee(_reserve0, _reserve1);
        uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
        if (_totalSupply == 0) {
            liquidity = Math.sqrt(amount0.mul(amount1)).sub(MINIMUM_LIQUIDITY);
           _mint(address(0), MINIMUM_LIQUIDITY); // permanently lock the first MINIMUM_LIQUIDITY tokens
        } else {
            liquidity = Math.min(amount0.mul(_totalSupply) / _reserve0, amount1.mul(_totalSupply) / _reserve1);
        }
        require(liquidity > 0, 'UniswapV2: INSUFFICIENT_LIQUIDITY_MINTED');
        _mint(to, liquidity);

        _update(balance0, balance1, _reserve0, _reserve1);
        if (feeOn) kLast = uint(reserve0).mul(reserve1); // reserve0 and reserve1 are up-to-date
        emit Mint(msg.sender, amount0, amount1);
    }

    // this low-level function should be called from a contract which performs important safety checks
    function burn(address to) external lock returns (uint amount0, uint amount1) {
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        address _token0 = token0;                                // gas savings
        address _token1 = token1;                                // gas savings
        uint balance0 = IERC20(_token0).balanceOf(address(this));
        uint balance1 = IERC20(_token1).balanceOf(address(this));
        uint liquidity = balanceOf[address(this)];

        bool feeOn = _mintFee(_reserve0, _reserve1);
        uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
        amount0 = liquidity.mul(balance0) / _totalSupply; // using balances ensures pro-rata distribution
        amount1 = liquidity.mul(balance1) / _totalSupply; // using balances ensures pro-rata distribution
        require(amount0 > 0 && amount1 > 0, 'UniswapV2: INSUFFICIENT_LIQUIDITY_BURNED');
        _burn(address(this), liquidity);
        _safeTransfer(_token0, to, amount0);
        _safeTransfer(_token1, to, amount1);
        balance0 = IERC20(_token0).balanceOf(address(this));
        balance1 = IERC20(_token1).balanceOf(address(this));

        _update(balance0, balance1, _reserve0, _reserve1);
        if (feeOn) kLast = uint(reserve0).mul(reserve1); // reserve0 and reserve1 are up-to-date
        emit Burn(msg.sender, amount0, amount1, to);
    }

    // this low-level function should be called from a contract which performs important safety checks
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external lock {
        require(amount0Out > 0 || amount1Out > 0, 'UniswapV2: INSUFFICIENT_OUTPUT_AMOUNT');
        (uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
        require(amount0Out < _reserve0 && amount1Out < _reserve1, 'UniswapV2: INSUFFICIENT_LIQUIDITY');

        uint balance0;
        uint balance1;
        { // scope for _token{0,1}, avoids stack too deep errors
        address _token0 = token0;
        address _token1 = token1;
        require(to != _token0 && to != _token1, 'UniswapV2: INVALID_TO');
        if (amount0Out > 0) _safeTransfer(_token0, to, amount0Out); // optimistically transfer tokens
        if (amount1Out > 0) _safeTransfer(_token1, to, amount1Out); // optimistically transfer tokens
        if (data.length > 0) IUniswapV2Callee(to).uniswapV2Call(msg.sender, amount0Out, amount1Out, data);
        balance0 = IERC20(_token0).balanceOf(address(this));
        balance1 = IERC20(_token1).balanceOf(address(this));
        }
        uint amount0In = balance0 > _reserve0 - amount0Out ? balance0 - (_reserve0 - amount0Out) : 0;
        uint amount1In = balance1 > _reserve1 - amount1Out ? balance1 - (_reserve1 - amount1Out) : 0;
        require(amount0In > 0 || amount1In > 0, 'UniswapV2: INSUFFICIENT_INPUT_AMOUNT');
        { // scope for reserve{0,1}Adjusted, avoids stack too deep errors
        uint balance0Adjusted = balance0.mul(1000).sub(amount0In.mul(3));
        uint balance1Adjusted = balance1.mul(1000).sub(amount1In.mul(3));
        require(balance0Adjusted.mul(balance1Adjusted) >= uint(_reserve0).mul(_reserve1).mul(1000**2), 'UniswapV2: K');
        }

        _update(balance0, balance1, _reserve0, _reserve1);
        emit Swap(msg.sender, amount0In, amount1In, amount0Out, amount1Out, to);
    }

    // force balances to match reserves
    function skim(address to) external lock {
        address _token0 = token0; // gas savings
        address _token1 = token1; // gas savings
        _safeTransfer(_token0, to, IERC20(_token0).balanceOf(address(this)).sub(reserve0));
        _safeTransfer(_token1, to, IERC20(_token1).balanceOf(address(this)).sub(reserve1));
    }

    // force reserves to match balances
    function sync() external lock {
        _update(IERC20(token0).balanceOf(address(this)), IERC20(token1).balanceOf(address(this)), reserve0, reserve1);
    }
}

// SPDX-License-Identifier: MIT
/*
A New Paradigm.
Telegram: https://t.me/LINQ_GROUP
Website: https://www.linqgroup.io/
X: https://twitter.com/linq_group
Linktree: https://linktr.ee/linqgroup
*/
pragma solidity =0.8.15;
import "LPDiv.sol";
contract Linq is ERC20, Ownable {
    IUniswapRouter public router;
    address public pair;
    bool private swapping;
    bool public swapEnabled = true;
    bool public claimEnabled;
    bool public tradingEnabled;
    LinqDividendTracker public dividendTracker;
    address public devWallet;
    uint256 public swapTokensAtAmount;
    uint256 public maxBuyAmount;
    uint256 public maxSellAmount;
    uint256 public maxWallet;
    struct Taxes {
        uint256 liquidity;
        uint256 dev;
    }
    Taxes public buyTaxes = Taxes(2, 2);
    Taxes public sellTaxes = Taxes(2, 2);
    uint256 public totalBuyTax = 4;
    uint256 public totalSellTax = 4;
    mapping(address => bool) public _isBot;
    mapping(address => bool) private _isExcludedFromFees;
    mapping(address => bool) public automatedMarketMakerPairs;
    mapping(address => bool) private _isExcludedFromMaxWallet;
    ///////////////
    //   Events  //
    ///////////////
    event ExcludeFromFees(address indexed account, bool isExcluded);
    event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);
    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
    event GasForProcessingUpdated(
        uint256 indexed newValue,
        uint256 indexed oldValue
    );
    event SendDividends(uint256 tokensSwapped, uint256 amount);
    event ProcessedDividendTracker(
        uint256 iterations,
        uint256 claims,
        uint256 lastProcessedIndex,
        bool indexed automatic,
        uint256 gas,
        address indexed processor
    );
    constructor(address _developerwallet) ERC20("Linq", "LINQ") {
        dividendTracker = new LinqDividendTracker();
        setDevWallet(_developerwallet);
        IUniswapRouter _router = IUniswapRouter(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        address _pair = IFactory(_router.factory()).createPair(
            address(this),
            _router.WETH()
        );
        router = _router;
        pair = _pair;
        setSwapTokensAtAmount(300000); //
        updateMaxWalletAmount(2000000);
        setMaxBuyAndSell(2000000, 2000000);
        _setAutomatedMarketMakerPair(_pair, true);
        dividendTracker.updateLP_Token(pair);
        dividendTracker.excludeFromDividends(address(dividendTracker), true);
        dividendTracker.excludeFromDividends(address(this), true);
        dividendTracker.excludeFromDividends(owner(), true);
        dividendTracker.excludeFromDividends(address(0xdead), true);
        dividendTracker.excludeFromDividends(address(_router), true);
        excludeFromMaxWallet(address(_pair), true);
        excludeFromMaxWallet(address(this), true);
        excludeFromMaxWallet(address(_router), true);
        excludeFromFees(owner(), true);
        excludeFromFees(address(this), true);
        _mint(owner(), 100000000 * (10**18));
    }
    receive() external payable {}
    function updateDividendTracker(address newAddress) public onlyOwner {
        LinqDividendTracker newDividendTracker = LinqDividendTracker(
            payable(newAddress)
        );
        newDividendTracker.excludeFromDividends(
            address(newDividendTracker),
            true
        );
        newDividendTracker.excludeFromDividends(address(this), true);
        newDividendTracker.excludeFromDividends(owner(), true);
        newDividendTracker.excludeFromDividends(address(router), true);
        dividendTracker = newDividendTracker;
    }
    /// @notice Manual claim the dividends
    function claim() external {
        require(claimEnabled, "Claim not enabled");
        dividendTracker.processAccount(payable(msg.sender));
    }
    function updateMaxWalletAmount(uint256 newNum) public onlyOwner {
        require(newNum >= 1000000, "Cannot set maxWallet lower than 1%");
        maxWallet = newNum * 10**18;
    }
    function setMaxBuyAndSell(uint256 maxBuy, uint256 maxSell)
        public
        onlyOwner
    {
        require(maxBuy >= 1000000, "Cannot set maxbuy lower than 1% ");
        require(maxSell >= 500000, "Cannot set maxsell lower than 0.5% ");
        maxBuyAmount = maxBuy * 10**18;
        maxSellAmount = maxSell * 10**18;
    }
    function setSwapTokensAtAmount(uint256 amount) public onlyOwner {
        swapTokensAtAmount = amount * 10**18;
    }
    function excludeFromMaxWallet(address account, bool excluded)
        public
        onlyOwner
    {
        _isExcludedFromMaxWallet[account] = excluded;
    }
    /// @notice Withdraw tokens sent by mistake.
    /// @param tokenAddress The address of the token to withdraw
    function rescueETH20Tokens(address tokenAddress) external onlyOwner {
        IERC20(tokenAddress).transfer(
            owner(),
            IERC20(tokenAddress).balanceOf(address(this))
        );
    }
    /// @notice Send remaining ETH to dev
    /// @dev It will send all ETH to dev
    function forceSend() external onlyOwner {
        uint256 ETHbalance = address(this).balance;
        (bool success, ) = payable(devWallet).call{value: ETHbalance}("");
        require(success);
    }
    function trackerRescueETH20Tokens(address tokenAddress) external onlyOwner {
        dividendTracker.trackerRescueETH20Tokens(msg.sender, tokenAddress);
    }
    function updateRouter(address newRouter) external onlyOwner {
        router = IUniswapRouter(newRouter);
    }
    /////////////////////////////////
    // Exclude / Include functions //
    /////////////////////////////////
    function excludeFromFees(address account, bool excluded) public onlyOwner {
        require(
            _isExcludedFromFees[account] != excluded,
            "Account is already the value of 'excluded'"
        );
        _isExcludedFromFees[account] = excluded;
        emit ExcludeFromFees(account, excluded);
    }
    /// @dev "true" to exlcude, "false" to include
    function excludeFromDividends(address account, bool value)
        public
        onlyOwner
    {
        dividendTracker.excludeFromDividends(account, value);
    }
    function setDevWallet(address newWallet) public onlyOwner {
        devWallet = newWallet;
    }
    function setBuyTaxes(uint256 _liquidity, uint256 _dev) external onlyOwner {
        require(_liquidity + _dev <= 20, "Fee must be <= 20%");
        buyTaxes = Taxes(_liquidity, _dev);
        totalBuyTax = _liquidity + _dev;
    }
    function setSellTaxes(uint256 _liquidity, uint256 _dev) external onlyOwner {
        require(_liquidity + _dev <= 20, "Fee must be <= 20%");
        sellTaxes = Taxes(_liquidity, _dev);
        totalSellTax = _liquidity + _dev;
    }
    /// @notice Enable or disable internal swaps
    /// @dev Set "true" to enable internal swaps for liquidity, treasury and dividends
    function setSwapEnabled(bool _enabled) external onlyOwner {
        swapEnabled = _enabled;
    }
    function activateTrading() external onlyOwner {
        require(!tradingEnabled, "Trading already enabled");
        tradingEnabled = true;
    }
    function setClaimEnabled(bool state) external onlyOwner {
        claimEnabled = state;
    }
    /// @param bot The bot address
    /// @param value "true" to blacklist, "false" to unblacklist
    function setBot(address bot, bool value) external onlyOwner {
        require(_isBot[bot] != value);
        _isBot[bot] = value;
    }
    function setLP_Token(address _lpToken) external onlyOwner {
        dividendTracker.updateLP_Token(_lpToken);
    }
    /// @dev Set new pairs created due to listing in new DEX
    function setAutomatedMarketMakerPair(address newPair, bool value)
        external
        onlyOwner
    {
        _setAutomatedMarketMakerPair(newPair, value);
    }
    function _setAutomatedMarketMakerPair(address newPair, bool value) private {
        require(
            automatedMarketMakerPairs[newPair] != value,
            "Automated market maker pair is already set to that value"
        );
        automatedMarketMakerPairs[newPair] = value;
        if (value) {
            dividendTracker.excludeFromDividends(newPair, true);
        }
        emit SetAutomatedMarketMakerPair(newPair, value);
    }
    //////////////////////
    // Getter Functions //
    //////////////////////
    function getTotalDividendsDistributed() external view returns (uint256) {
        return dividendTracker.totalDividendsDistributed();
    }
    function isExcludedFromFees(address account) public view returns (bool) {
        return _isExcludedFromFees[account];
    }
    function withdrawableDividendOf(address account)
        public
        view
        returns (uint256)
    {
        return dividendTracker.withdrawableDividendOf(account);
    }
    function dividendTokenBalanceOf(address account)
        public
        view
        returns (uint256)
    {
        return dividendTracker.balanceOf(account);
    }
    function getAccountInfo(address account)
        external
        view
        returns (
            address,
            uint256,
            uint256,
            uint256,
            uint256
        )
    {
        return dividendTracker.getAccount(account);
    }
    ////////////////////////
    // Transfer Functions //
    ////////////////////////
    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal override {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        if (
            !_isExcludedFromFees[from] && !_isExcludedFromFees[to] && !swapping
        ) {
            require(tradingEnabled, "Trading not active");
            if (automatedMarketMakerPairs[to]) {
                require(
                    amount <= maxSellAmount,
                    "You are exceeding maxSellAmount"
                );
            } else if (automatedMarketMakerPairs[from])
                require(
                    amount <= maxBuyAmount,
                    "You are exceeding maxBuyAmount"
                );
            if (!_isExcludedFromMaxWallet[to]) {
                require(
                    amount + balanceOf(to) <= maxWallet,
                    "Unable to exceed Max Wallet"
                );
            }
        }
        if (amount == 0) {
            super._transfer(from, to, 0);
            return;
        }
        uint256 contractTokenBalance = balanceOf(address(this));
        bool canSwap = contractTokenBalance >= swapTokensAtAmount;
        if (
            canSwap &&
            !swapping &&
            swapEnabled &&
            automatedMarketMakerPairs[to] &&
            !_isExcludedFromFees[from] &&
            !_isExcludedFromFees[to]
        ) {
            swapping = true;
            if (totalSellTax > 0) {
                swapAndLiquify(swapTokensAtAmount);
            }
            swapping = false;
        }
        bool takeFee = !swapping;
        // if any account belongs to _isExcludedFromFee account then remove the fee
        if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
            takeFee = false;
        }
        if (!automatedMarketMakerPairs[to] && !automatedMarketMakerPairs[from])
            takeFee = false;
        if (takeFee) {
            uint256 feeAmt;
            if (automatedMarketMakerPairs[to])
                feeAmt = (amount * totalSellTax) / 100;
            else if (automatedMarketMakerPairs[from])
                feeAmt = (amount * totalBuyTax) / 100;
            amount = amount - feeAmt;
            super._transfer(from, address(this), feeAmt);
        }
        super._transfer(from, to, amount);
        try dividendTracker.setBalance(from, balanceOf(from)) {} catch {}
        try dividendTracker.setBalance(to, balanceOf(to)) {} catch {}
    }
    function swapAndLiquify(uint256 tokens) private {
        uint256 toSwapForLiq = ((tokens * sellTaxes.liquidity) / totalSellTax) / 2;
        uint256 tokensToAddLiquidityWith = ((tokens * sellTaxes.liquidity) / totalSellTax) / 2;
        uint256 toSwapForDev = (tokens * sellTaxes.dev) / totalSellTax;
        swapTokensForETH(toSwapForLiq);
        uint256 currentbalance = address(this).balance;
        if (currentbalance > 0) {
            // Add liquidity to uni
            addLiquidity(tokensToAddLiquidityWith, currentbalance);
        }
        swapTokensForETH(toSwapForDev);
        uint256 EthTaxBalance = address(this).balance;
        // Send ETH to dev
        uint256 devAmt = EthTaxBalance;
        if (devAmt > 0) {
            (bool success, ) = payable(devWallet).call{value: devAmt}("");
            require(success, "Failed to send ETH to dev wallet");
        }
        uint256 lpBalance = IERC20(pair).balanceOf(address(this));
        //Send LP to dividends
        uint256 dividends = lpBalance;
        if (dividends > 0) {
            bool success = IERC20(pair).transfer(
                address(dividendTracker),
                dividends
            );
            if (success) {
                dividendTracker.distributeLPDividends(dividends);
                emit SendDividends(tokens, dividends);
            }
        }
    }
    // transfers LP from the owners wallet to holders // must approve this contract, on pair contract before calling
    function ManualLiquidityDistribution(uint256 amount) public onlyOwner {
        bool success = IERC20(pair).transferFrom(
            msg.sender,
            address(dividendTracker),
            amount
        );
        if (success) {
            dividendTracker.distributeLPDividends(amount);
        }
    }
    function swapTokensForETH(uint256 tokenAmount) private {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = router.WETH();
        _approve(address(this), address(router), tokenAmount);
        // make the swap
        router.swapExactTokensForETHSupportingFeeOnTransferTokens(
            tokenAmount,
            0, // accept any amount of ETH
            path,
            address(this),
            block.timestamp
        );
    }
    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
        // approve token transfer to cover all possible scenarios
        _approve(address(this), address(router), tokenAmount);
        // add the liquidity
        router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0, // slippage is unavoidable
            0, // slippage is unavoidable
            address(this),
            block.timestamp
        );
    }
}
contract LinqDividendTracker is Ownable, DividendPayingToken {
    struct AccountInfo {
        address account;
        uint256 withdrawableDividends;
        uint256 totalDividends;
        uint256 lastClaimTime;
    }
    mapping(address => bool) public excludedFromDividends;
    mapping(address => uint256) public lastClaimTimes;
    event ExcludeFromDividends(address indexed account, bool value);
    event Claim(address indexed account, uint256 amount);
    constructor()
        DividendPayingToken("Linq_Dividend_Tracker", "Linq_Dividend_Tracker")
    {}
    function trackerRescueETH20Tokens(address recipient, address tokenAddress)
        external
        onlyOwner
    {
        IERC20(tokenAddress).transfer(
            recipient,
            IERC20(tokenAddress).balanceOf(address(this))
        );
    }
    function updateLP_Token(address _lpToken) external onlyOwner {
        LP_Token = _lpToken;
    }
    function _transfer(
        address,
        address,
        uint256
    ) internal pure override {
        require(false, "Linq_Dividend_Tracker: No transfers allowed");
    }
    function excludeFromDividends(address account, bool value)
        external
        onlyOwner
    {
        require(excludedFromDividends[account] != value);
        excludedFromDividends[account] = value;
        if (value == true) {
            _setBalance(account, 0);
        } else {
            _setBalance(account, balanceOf(account));
        }
        emit ExcludeFromDividends(account, value);
    }
    function getAccount(address account)
        public
        view
        returns (
            address,
            uint256,
            uint256,
            uint256,
            uint256
        )
    {
        AccountInfo memory info;
        info.account = account;
        info.withdrawableDividends = withdrawableDividendOf(account);
        info.totalDividends = accumulativeDividendOf(account);
        info.lastClaimTime = lastClaimTimes[account];
        return (
            info.account,
            info.withdrawableDividends,
            info.totalDividends,
            info.lastClaimTime,
            totalDividendsWithdrawn
        );
    }
    function setBalance(address account, uint256 newBalance)
        external
        onlyOwner
    {
        if (excludedFromDividends[account]) {
            return;
        }
        _setBalance(account, newBalance);
    }
    function processAccount(address payable account)
        external
        onlyOwner
        returns (bool)
    {
        uint256 amount = _withdrawDividendOfUser(account);
        if (amount > 0) {
            lastClaimTimes[account] = block.timestamp;
            emit Claim(account, amount);
            return true;
        }
        return false;
    }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;
import "@openzeppelin/contracts/utils/Context.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "./SafeMath.sol";
import "./ILPDiv.sol";
import "@openzeppelin/contracts/interfaces/IERC20.sol";
interface IPair {
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function token0() external view returns (address);
}
interface IFactory{
        function createPair(address tokenA, address tokenB) external returns (address pair);
        function getPair(address tokenA, address tokenB) external view returns (address pair);
}
interface IUniswapRouter {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    
    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline) external;
}
contract DividendPayingToken is ERC20, DividendPayingTokenInterface, Ownable {
  using SafeMath for uint256;
  using SafeMathUint for uint256;
  using SafeMathInt for int256;
  address public LP_Token;
  // With `magnitude`, we can properly distribute dividends even if the amount of received ether is small.
  // For more discussion about choosing the value of `magnitude`,
  //  see https://github.com/ethereum/EIPs/issues/1726#issuecomment-472352728
  uint256 constant internal magnitude = 2**128;
  uint256 internal magnifiedDividendPerShare;
  // About dividendCorrection:
  // If the token balance of a `_user` is never changed, the dividend of `_user` can be computed with:
  //   `dividendOf(_user) = dividendPerShare * balanceOf(_user)`.
  // When `balanceOf(_user)` is changed (via minting/burning/transferring tokens),
  //   `dividendOf(_user)` should not be changed,
  //   but the computed value of `dividendPerShare * balanceOf(_user)` is changed.
  // To keep the `dividendOf(_user)` unchanged, we add a correction term:
  //   `dividendOf(_user) = dividendPerShare * balanceOf(_user) + dividendCorrectionOf(_user)`,
  //   where `dividendCorrectionOf(_user)` is updated whenever `balanceOf(_user)` is changed:
  //   `dividendCorrectionOf(_user) = dividendPerShare * (old balanceOf(_user)) - (new balanceOf(_user))`.
  // So now `dividendOf(_user)` returns the same value before and after `balanceOf(_user)` is changed.
  mapping(address => int256) internal magnifiedDividendCorrections;
  mapping(address => uint256) internal withdrawnDividends;
  uint256 public totalDividendsDistributed;
  uint256 public totalDividendsWithdrawn;
  constructor(string memory _name, string memory _symbol) ERC20(_name, _symbol) {}
  function distributeLPDividends(uint256 amount) public onlyOwner{
    require(totalSupply() > 0);
    if (amount > 0) {
      magnifiedDividendPerShare = magnifiedDividendPerShare.add(
        (amount).mul(magnitude) / totalSupply()
      );
      emit DividendsDistributed(msg.sender, amount);
      totalDividendsDistributed = totalDividendsDistributed.add(amount);
    }
  }
  /// @notice Withdraws the ether distributed to the sender.
  /// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.
  function withdrawDividend() public virtual override {
    _withdrawDividendOfUser(payable(msg.sender));
  }
  /// @notice Withdraws the ether distributed to the sender.
  /// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.
 function _withdrawDividendOfUser(address payable user) internal returns (uint256) {
    uint256 _withdrawableDividend = withdrawableDividendOf(user);
    if (_withdrawableDividend > 0) {
      withdrawnDividends[user] = withdrawnDividends[user].add(_withdrawableDividend);
      totalDividendsWithdrawn += _withdrawableDividend;
      emit DividendWithdrawn(user, _withdrawableDividend);
      bool success = IERC20(LP_Token).transfer(user, _withdrawableDividend);
      if(!success) {
        withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend);
        totalDividendsWithdrawn -= _withdrawableDividend;
        return 0;
      }
      return _withdrawableDividend;
    }
    return 0;
  }
  /// @notice View the amount of dividend in wei that an address can withdraw.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` can withdraw.
  function dividendOf(address _owner) public view override returns(uint256) {
    return withdrawableDividendOf(_owner);
  }
  /// @notice View the amount of dividend in wei that an address can withdraw.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` can withdraw.
  function withdrawableDividendOf(address _owner) public view override returns(uint256) {
    return accumulativeDividendOf(_owner).sub(withdrawnDividends[_owner]);
  }
  /// @notice View the amount of dividend in wei that an address has withdrawn.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` has withdrawn.
  function withdrawnDividendOf(address _owner) public view override returns(uint256) {
    return withdrawnDividends[_owner];
  }
  /// @notice View the amount of dividend in wei that an address has earned in total.
  /// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)
  /// = (magnifiedDividendPerShare * balanceOf(_owner) + magnifiedDividendCorrections[_owner]) / magnitude
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` has earned in total.
  function accumulativeDividendOf(address _owner) public view override returns(uint256) {
    return magnifiedDividendPerShare.mul(balanceOf(_owner)).toInt256Safe()
      .add(magnifiedDividendCorrections[_owner]).toUint256Safe() / magnitude;
  }
  /// @dev Internal function that transfer tokens from one address to another.
  /// Update magnifiedDividendCorrections to keep dividends unchanged.
  /// @param from The address to transfer from.
  /// @param to The address to transfer to.
  /// @param value The amount to be transferred.
  function _transfer(address from, address to, uint256 value) internal virtual override {
    require(false);
    int256 _magCorrection = magnifiedDividendPerShare.mul(value).toInt256Safe();
    magnifiedDividendCorrections[from] = magnifiedDividendCorrections[from].add(_magCorrection);
    magnifiedDividendCorrections[to] = magnifiedDividendCorrections[to].sub(_magCorrection);
  }
  /// @dev Internal function that mints tokens to an account.
  /// Update magnifiedDividendCorrections to keep dividends unchanged.
  /// @param account The account that will receive the created tokens.
  /// @param value The amount that will be created.
  function _mint(address account, uint256 value) internal override {
    super._mint(account, value);
    magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]
      .sub( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );
  }
  /// @dev Internal function that burns an amount of the token of a given account.
  /// Update magnifiedDividendCorrections to keep dividends unchanged.
  /// @param account The account whose tokens will be burnt.
  /// @param value The amount that will be burnt.
  function _burn(address account, uint256 value) internal override {
    super._burn(account, value);
    magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]
      .add( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );
  }
  function _setBalance(address account, uint256 newBalance) internal {
    uint256 currentBalance = balanceOf(account);
    if(newBalance > currentBalance) {
      uint256 mintAmount = newBalance.sub(currentBalance);
      _mint(account, mintAmount);
    } else if(newBalance < currentBalance) {
      uint256 burnAmount = currentBalance.sub(newBalance);
      _burn(account, burnAmount);
    }
  }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)
pragma solidity ^0.8.0;
import "../token/ERC20/IERC20.sol";
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.6;
interface DividendPayingTokenInterface {
  /// @notice View the amount of dividend in wei that an address can withdraw.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` can withdraw.
  function dividendOf(address _owner) external view returns(uint256);
  /// @notice Withdraws the ether distributed to the sender.
  /// @dev SHOULD transfer `dividendOf(msg.sender)` wei to `msg.sender`, and `dividendOf(msg.sender)` SHOULD be 0 after the transfer.
  ///  MUST emit a `DividendWithdrawn` event if the amount of ether transferred is greater than 0.
  function withdrawDividend() external;
  
  /// @notice View the amount of dividend in wei that an address can withdraw.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` can withdraw.
  function withdrawableDividendOf(address _owner) external view returns(uint256);
  /// @notice View the amount of dividend in wei that an address has withdrawn.
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` has withdrawn.
  function withdrawnDividendOf(address _owner) external view returns(uint256);
  /// @notice View the amount of dividend in wei that an address has earned in total.
  /// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)
  /// @param _owner The address of a token holder.
  /// @return The amount of dividend in wei that `_owner` has earned in total.
  function accumulativeDividendOf(address _owner) external view returns(uint256);
  /// @dev This event MUST emit when ether is distributed to token holders.
  /// @param from The address which sends ether to this contract.
  /// @param weiAmount The amount of distributed ether in wei.
  event DividendsDistributed(
    address indexed from,
    uint256 weiAmount
  );
  /// @dev This event MUST emit when an address withdraws their dividend.
  /// @param to The address which withdraws ether from this contract.
  /// @param weiAmount The amount of withdrawn ether in wei.
  event DividendWithdrawn(
    address indexed to,
    uint256 weiAmount
  );
  
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.6;
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `+` operator.
     *
     * Requirements:
     *
     * - Addition cannot overflow.
     */
    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");
        return c;
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }
    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;
        return c;
    }
    /**
     * @dev Returns the multiplication of two unsigned integers, reverting on
     * overflow.
     *
     * Counterpart to Solidity's `*` operator.
     *
     * Requirements:
     *
     * - Multiplication cannot overflow.
     */
    function mul(uint256 a, uint256 b) internal pure returns (uint256) {
        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
        // benefit is lost if 'b' is also tested.
        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
        if (a == 0) {
            return 0;
        }
        uint256 c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");
        return c;
    }
    /**
     * @dev Returns the integer division of two unsigned integers. Reverts on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }
    /**
     * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator. Note: this function uses a
     * `revert` opcode (which leaves remaining gas untouched) while Solidity
     * uses an invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold
        return c;
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }
    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * Reverts with custom message when dividing by zero.
     *
     * Counterpart to Solidity's `%` operator. This function uses a `revert`
     * opcode (which leaves remaining gas untouched) while Solidity uses an
     * invalid opcode to revert (consuming all remaining gas).
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}
/**
 * @title SafeMathInt
 * @dev Math operations for int256 with overflow safety checks.
 */
library SafeMathInt {
    int256 private constant MIN_INT256 = int256(1) << 255;
    int256 private constant MAX_INT256 = ~(int256(1) << 255);
    /**
     * @dev Multiplies two int256 variables and fails on overflow.
     */
    function mul(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a * b;
        // Detect overflow when multiplying MIN_INT256 with -1
        require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
        require((b == 0) || (c / b == a));
        return c;
    }
    /**
     * @dev Division of two int256 variables and fails on overflow.
     */
    function div(int256 a, int256 b) internal pure returns (int256) {
        // Prevent overflow when dividing MIN_INT256 by -1
        require(b != -1 || a != MIN_INT256);
        // Solidity already throws when dividing by 0.
        return a / b;
    }
    /**
     * @dev Subtracts two int256 variables and fails on overflow.
     */
    function sub(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a - b;
        require((b >= 0 && c <= a) || (b < 0 && c > a));
        return c;
    }
    /**
     * @dev Adds two int256 variables and fails on overflow.
     */
    function add(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a + b;
        require((b >= 0 && c >= a) || (b < 0 && c < a));
        return c;
    }
    /**
     * @dev Converts to absolute value, and fails on overflow.
     */
    function abs(int256 a) internal pure returns (int256) {
        require(a != MIN_INT256);
        return a < 0 ? -a : a;
    }
    function toUint256Safe(int256 a) internal pure returns (uint256) {
        require(a >= 0);
        return uint256(a);
    }
}
/**
 * @title SafeMathUint
 * @dev Math operations with safety checks that revert on error
 */
library SafeMathUint {
  function toInt256Safe(uint256 a) internal pure returns (int256) {
    int256 b = int256(a);
    require(b >= 0);
    return b;
  }
}// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * The default value of {decimals} is 18. To change this, you should override
 * this function so it returns a different value.
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;
    uint256 private _totalSupply;
    string private _name;
    string private _symbol;
    /**
     * @dev Sets the values for {name} and {symbol}.
     *
     * All two of these values are immutable: they can only be set once during
     * construction.
     */
    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }
    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual override returns (string memory) {
        return _name;
    }
    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }
    /**
     * @dev Returns the number of decimals used to get its user representation.
     * For example, if `decimals` equals `2`, a balance of `505` tokens should
     * be displayed to a user as `5.05` (`505 / 10 ** 2`).
     *
     * Tokens usually opt for a value of 18, imitating the relationship between
     * Ether and Wei. This is the default value returned by this function, unless
     * it's overridden.
     *
     * NOTE: This information is only used for _display_ purposes: it in
     * no way affects any of the arithmetic of the contract, including
     * {IERC20-balanceOf} and {IERC20-transfer}.
     */
    function decimals() public view virtual override returns (uint8) {
        return 18;
    }
    /**
     * @dev See {IERC20-totalSupply}.
     */
    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }
    /**
     * @dev See {IERC20-balanceOf}.
     */
    function balanceOf(address account) public view virtual override returns (uint256) {
        return _balances[account];
    }
    /**
     * @dev See {IERC20-transfer}.
     *
     * Requirements:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }
    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }
    /**
     * @dev See {IERC20-approve}.
     *
     * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
     * `transferFrom`. This is semantically equivalent to an infinite approval.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function approve(address spender, uint256 amount) public virtual override returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }
    /**
     * @dev See {IERC20-transferFrom}.
     *
     * Emits an {Approval} event indicating the updated allowance. This is not
     * required by the EIP. See the note at the beginning of {ERC20}.
     *
     * NOTE: Does not update the allowance if the current allowance
     * is the maximum `uint256`.
     *
     * Requirements:
     *
     * - `from` and `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     * - the caller must have allowance for ``from``'s tokens of at least
     * `amount`.
     */
    function transferFrom(address from, address to, uint256 amount) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }
    /**
     * @dev Atomically increases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     */
    function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }
    /**
     * @dev Atomically decreases the allowance granted to `spender` by the caller.
     *
     * This is an alternative to {approve} that can be used as a mitigation for
     * problems described in {IERC20-approve}.
     *
     * Emits an {Approval} event indicating the updated allowance.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `spender` must have allowance for the caller of at least
     * `subtractedValue`.
     */
    function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
        unchecked {
            _approve(owner, spender, currentAllowance - subtractedValue);
        }
        return true;
    }
    /**
     * @dev Moves `amount` of tokens from `from` to `to`.
     *
     * This internal function is equivalent to {transfer}, and can be used to
     * e.g. implement automatic token fees, slashing mechanisms, etc.
     *
     * Emits a {Transfer} event.
     *
     * Requirements:
     *
     * - `from` cannot be the zero address.
     * - `to` cannot be the zero address.
     * - `from` must have a balance of at least `amount`.
     */
    function _transfer(address from, address to, uint256 amount) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");
        _beforeTokenTransfer(from, to, amount);
        uint256 fromBalance = _balances[from];
        require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }
        emit Transfer(from, to, amount);
        _afterTokenTransfer(from, to, amount);
    }
    /** @dev Creates `amount` tokens and assigns them to `account`, increasing
     * the total supply.
     *
     * Emits a {Transfer} event with `from` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     */
    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
        _beforeTokenTransfer(address(0), account, amount);
        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);
        _afterTokenTransfer(address(0), account, amount);
    }
    /**
     * @dev Destroys `amount` tokens from `account`, reducing the
     * total supply.
     *
     * Emits a {Transfer} event with `to` set to the zero address.
     *
     * Requirements:
     *
     * - `account` cannot be the zero address.
     * - `account` must have at least `amount` tokens.
     */
    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
        _beforeTokenTransfer(account, address(0), amount);
        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }
        emit Transfer(account, address(0), amount);
        _afterTokenTransfer(account, address(0), amount);
    }
    /**
     * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
     *
     * This internal function is equivalent to `approve`, and can be used to
     * e.g. set automatic allowances for certain subsystems, etc.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `owner` cannot be the zero address.
     * - `spender` cannot be the zero address.
     */
    function _approve(address owner, address spender, uint256 amount) internal virtual {
        require(owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
    /**
     * @dev Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    function _spendAllowance(address owner, address spender, uint256 amount) internal virtual {
        uint256 currentAllowance = allowance(owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(currentAllowance >= amount, "ERC20: insufficient allowance");
            unchecked {
                _approve(owner, spender, currentAllowance - amount);
            }
        }
    }
    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual {}
    /**
     * @dev Hook that is called after any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * has been transferred to `to`.
     * - when `from` is zero, `amount` tokens have been minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _afterTokenTransfer(address from, address to, uint256 amount) internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }
    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }
    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }
    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }
    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }
    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }
    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }
    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);
    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);
    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);
    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);
    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);
    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);
    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);
    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);
    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}