pragma solidity ^0.6.12;

/**
 * @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
 * instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
 * be specified by overriding the virtual {_implementation} function.
 * 
 * Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
 * different contract through the {_delegate} function.
 * 
 * The success and return data of the delegated call will be returned back to the caller of the proxy.
 */
abstract contract Proxy {
    /**
     * @dev Delegates the current call to `implementation`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _delegate(address implementation) internal {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            // Copy msg.data. We take full control of memory in this inline assembly
            // block because it will not return to Solidity code. We overwrite the
            // Solidity scratch pad at memory position 0.
            calldatacopy(0, 0, calldatasize())

            // Call the implementation.
            // out and outsize are 0 because we don't know the size yet.
            let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)

            // Copy the returned data.
            returndatacopy(0, 0, returndatasize())

            switch result
            // delegatecall returns 0 on error.
            case 0 { revert(0, returndatasize()) }
            default { return(0, returndatasize()) }
        }
    }

    /**
     * @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
     * and {_fallback} should delegate.
     */
    function _implementation() internal virtual view returns (address);

    /**
     * @dev Delegates the current call to the address returned by `_implementation()`.
     * 
     * This function does not return to its internall call site, it will return directly to the external caller.
     */
    function _fallback() internal {
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
     * function in the contract matches the call data.
     */
    fallback () payable external {
        _delegate(_implementation());
    }

    /**
     * @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
     * is empty.
     */
    receive () payable external {
        _delegate(_implementation());
    }
}

/**
 * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
 * implementation address that can be changed. This address is stored in storage in the location specified by
 * https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
 * implementation behind the proxy.
 * 
 * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
 * {TransparentUpgradeableProxy}.
 */
contract UpgradeableProxy is Proxy {
    /**
     * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
     * 
     * If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
     * function call, and allows initializating the storage of the proxy like a Solidity constructor.
     */
    constructor() public payable {
        assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
    }

    /**
     * @dev Emitted when the implementation is upgraded.
     */
    event Upgraded(address indexed implementation);

    /**
     * @dev Storage slot with the address of the current implementation.
     * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;

    /**
     * @dev Returns the current implementation address.
     */
    function _implementation() internal override view returns (address impl) {
        bytes32 slot = _IMPLEMENTATION_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            impl := sload(slot)
        }
    }

    /**
     * @dev Upgrades the proxy to a new implementation.
     * 
     * Emits an {Upgraded} event.
     */
    function _upgradeTo(address newImplementation) virtual internal {
        _setImplementation(newImplementation);
        emit Upgraded(newImplementation);
    }

    /**
     * @dev Stores a new address in the EIP1967 implementation slot.
     */
    function _setImplementation(address newImplementation) private {
        address implementation = _implementation();
        require(implementation != newImplementation, "Proxy: Attemps update proxy with the same implementation");

        bytes32 slot = _IMPLEMENTATION_SLOT;

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newImplementation)
        }
    }
}

/**
 * @dev This contract implements a proxy that is upgradeable by an admin.
 * 
 * To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
 * clashing], which can potentially be used in an attack, this contract uses the
 * https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
 * things that go hand in hand:
 * 
 * 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
 * that call matches one of the admin functions exposed by the proxy itself.
 * 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
 * implementation. If the admin tries to call a function on the implementation it will fail with an error that says
 * "admin cannot fallback to proxy target".
 * 
 * These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
 * the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
 * to sudden errors when trying to call a function from the proxy implementation.
 * 
 * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
 * you should think of the `ProxyAdmin` instance as the real administrative inerface of your proxy.
 */
contract TransparentUpgradeableProxy is UpgradeableProxy {
    /**
     * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
     * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
     */
    constructor(address admin, address implementation) public payable UpgradeableProxy() {
        require(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1), "Wrong admin slot");
        _setAdmin(admin);
        _upgradeTo(implementation);
    }

    /**
     * @dev Emitted when the admin account has changed.
     */
    event AdminChanged(address previousAdmin, address newAdmin);

    /**
     * @dev Storage slot with the admin of the contract.
     * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
     * validated in the constructor.
     */
    bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;

    /**
     * @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
     */
    modifier ifAdmin() {
        if (msg.sender == _admin()) {
            _;
        } else {
            _fallback();
        }
    }

    /**
     * @dev Returns the current admin.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
     * 
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
     */
    function admin() external ifAdmin returns (address) {
        return _admin();
    }

    /**
     * @dev Returns the current implementation.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
     * 
     * TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
     * https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
     * `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
     */
    function implementation() external ifAdmin returns (address) {
        return _implementation();
    }

    /**
     * @dev Changes the admin of the proxy.
     * 
     * Emits an {AdminChanged} event.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
     */
    function changeAdmin(address newAdmin) external ifAdmin {
        require(newAdmin != _admin(), "Proxy: new admin is the same admin.");
        emit AdminChanged(_admin(), newAdmin);
        _setAdmin(newAdmin);
    }

    /**
     * @dev Upgrade the implementation of the proxy.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
     */
    function upgradeTo(address newImplementation) external ifAdmin {
        _upgradeTo(newImplementation);
    }

    /**
     * @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
     * by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
     * proxied contract.
     * 
     * NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
     */
    function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
        _upgradeTo(newImplementation);
        // solhint-disable-next-line avoid-low-level-calls
        (bool success,) = newImplementation.delegatecall(data);
        require(success);
    }

    /**
     * @dev Returns the current admin.
     */
    function _admin() internal view returns (address adm) {
        bytes32 slot = _ADMIN_SLOT;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            adm := sload(slot)
        }
    }

    /**
     * @dev Stores a new address in the EIP1967 admin slot.
     */
    function _setAdmin(address newAdmin) private {
        bytes32 slot = _ADMIN_SLOT;
        require(newAdmin != address(0), "Proxy: Can't set admin to zero address.");

        // solhint-disable-next-line no-inline-assembly
        assembly {
            sstore(slot, newAdmin)
        }
    }
}

// SPDX-License-Identifier: MIT

pragma solidity 0.8.19;

/**

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Public Chat: https://t.me/zaibotpublic
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**/

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
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) {
    // Solidity only automatically asserts when dividing by 0
    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;
  }
}

interface IERC20 {
    function totalSupply() external view returns (uint256);
    function decimals() external view returns (uint8);
    function symbol() external view returns (string memory);
    function name() external view returns (string memory);
    function balanceOf(address account) external view returns (uint256);
    function transfer(address recipient, uint256 amount) external returns (bool);
    function allowance(address _owner, address spender) external view returns (uint256);
    function approve(address spender, uint256 amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(address indexed owner, address indexed spender, uint256 value);
}

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;
}

/*
 * @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) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

// File: @openzeppelin/contracts/access/Ownable.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 () {
        address msgSender = _msgSender();
        _owner = msgSender;
        emit OwnershipTransferred(address(0), msgSender);
    }

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

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        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 {
        emit OwnershipTransferred(_owner, address(0));
        _owner = 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");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}


contract LGEWhitelisted is Context {
    struct WhitelistRound {
        uint256 duration;
        uint256 amountMax;
        mapping(address => bool) addresses;
        mapping(address => uint256) purchased;
    }

    WhitelistRound[] public _lgeWhitelistRounds;

    uint256 public _lgeTimestamp;
    address public _lgePairAddress;

    address public _whitelister;

    event WhitelisterTransferred(address indexed previousWhitelister, address indexed newWhitelister);

    constructor() {
        _whitelister = _msgSender();
    }

    modifier onlyWhitelister() {
        require(_whitelister == _msgSender(), "Caller is not the whitelister");
        _;
    }

    function renounceWhitelister() external onlyWhitelister {
        emit WhitelisterTransferred(_whitelister, address(0));
        _whitelister = address(0);
    }

    function transferWhitelister(address newWhitelister) external onlyWhitelister {
        _transferWhitelister(newWhitelister);
    }

    function _transferWhitelister(address newWhitelister) internal {
        require(newWhitelister != address(0), "New whitelister is the zero address");
        emit WhitelisterTransferred(_whitelister, newWhitelister);
        _whitelister = newWhitelister;
    }

    /*
     * createLGEWhitelist - Call this after initial Token Generation Event (TGE)
     *
     * pairAddress - address generated from createPair() event on DEX
     * durations - array of durations (seconds) for each whitelist rounds
     * amountsMax - array of max amounts (TOKEN decimals) for each whitelist round
     *
     */

    function createLGEWhitelist(
        address pairAddress,
        uint256[] calldata durations,
        uint256[] calldata amountsMax
    ) external onlyWhitelister() {
        require(durations.length == amountsMax.length, "Invalid whitelist(s)");

        _lgePairAddress = pairAddress;

        if (durations.length > 0) {
            delete _lgeWhitelistRounds;

            for (uint256 i = 0; i < durations.length; i++) {
                WhitelistRound storage whitelistRound = _lgeWhitelistRounds.push();
                whitelistRound.duration = durations[i];
                whitelistRound.amountMax = amountsMax[i];
            }
        }
    }

    /*
     * modifyLGEWhitelistAddresses - Define what addresses are included/excluded from a whitelist round
     *
     * index - 0-based index of round to modify whitelist
     * duration - period in seconds from LGE event or previous whitelist round
     * amountMax - max amount (TOKEN decimals) for each whitelist round
     *
     */

    function modifyLGEWhitelist(
        uint256 index,
        uint256 duration,
        uint256 amountMax,
        address[] calldata addresses,
        bool enabled
    ) external onlyWhitelister() {
        require(index < _lgeWhitelistRounds.length, "Invalid index");
        require(amountMax > 0, "Invalid amountMax");

        if (duration != _lgeWhitelistRounds[index].duration) _lgeWhitelistRounds[index].duration = duration;

        if (amountMax != _lgeWhitelistRounds[index].amountMax) _lgeWhitelistRounds[index].amountMax = amountMax;

        for (uint256 i = 0; i < addresses.length; i++) {
            _lgeWhitelistRounds[index].addresses[addresses[i]] = enabled;
        }
    }

    /*
     *  getLGEWhitelistRound
     *
     *  returns:
     *
     *  1. whitelist round number ( 0 = no active round now )
     *  2. duration, in seconds, current whitelist round is active for
     *  3. timestamp current whitelist round closes at
     *  4. maximum amount a whitelister can purchase in this round
     *  5. is caller whitelisted
     *  6. how much caller has purchased in current whitelist round
     *
     */

    function getLGEWhitelistRound()
        public
        view
        returns (
            uint256,
            uint256,
            uint256,
            uint256,
            bool,
            uint256
        )
    {
        if (_lgeTimestamp > 0) {
            uint256 wlCloseTimestampLast = _lgeTimestamp;

            for (uint256 i = 0; i < _lgeWhitelistRounds.length; i++) {
                WhitelistRound storage wlRound = _lgeWhitelistRounds[i];

                wlCloseTimestampLast = wlCloseTimestampLast + wlRound.duration;
                if (block.timestamp <= wlCloseTimestampLast)
                    return (
                        i + 1,
                        wlRound.duration,
                        wlCloseTimestampLast,
                        wlRound.amountMax,
                        wlRound.addresses[_msgSender()],
                        wlRound.purchased[_msgSender()]
                    );
            }
        }

        return (0, 0, 0, 0, false, 0);
    }

    /*
     * _applyLGEWhitelist - internal function to be called initially before any transfers
     *
     */

    function _applyLGEWhitelist(
        address sender,
        address recipient,
        uint256 amount
    ) internal {
        if (_lgePairAddress == address(0) || _lgeWhitelistRounds.length == 0) return;

        if (_lgeTimestamp == 0 && sender != _lgePairAddress && recipient == _lgePairAddress && amount > 0)
            _lgeTimestamp = block.timestamp;

        if (sender == _lgePairAddress && recipient != _lgePairAddress) {
            //buying

            (uint256 wlRoundNumber, , , , , ) = getLGEWhitelistRound();

            if (wlRoundNumber > 0) {
                WhitelistRound storage wlRound = _lgeWhitelistRounds[wlRoundNumber - 1];

                require(wlRound.addresses[recipient], "LGE - Buyer is not whitelisted");

                uint256 amountRemaining = 0;

                if (wlRound.purchased[recipient] < wlRound.amountMax)
                    amountRemaining = wlRound.amountMax - wlRound.purchased[recipient];

                require(amount <= amountRemaining, "LGE - Amount exceeds whitelist maximum");
                wlRound.purchased[recipient] = wlRound.purchased[recipient] + amount;
            }
        }
    }
}

contract ZAIBOT is Context, IERC20, Ownable, LGEWhitelisted {
    
    using SafeMath for uint256;
    
    mapping (address => uint256) private _balances;
    
    mapping (address => mapping (address => uint256)) private _allowances;
    
    uint256 private _totalSupply;
    uint8 private _decimals;
    string private _symbol;
    string private _name;
	
	mapping(address => bool) public _feeExcluded;

	uint256 public _feeBurnPct;
	uint256 public _feeRewardPct;
	
	address public _feeRewardAddress;

	mapping(address => bool) public _pair;
	
	address public _router;
	
	address[] public _feeRewardSwapPath;
    
    constructor(uint256 feeBurnPct, uint256 feeRewardPct, address feeRewardAddress, address router) {
	
        _name = "ZAIBOT.io";
        _symbol = "ZAI";
        _decimals = 18;
        _totalSupply = 100000000e18;
		
		IUniswapV2Router02 r = IUniswapV2Router02(router);
        
        address[] memory feeRewardSwapPath = new address[](2);
            
        feeRewardSwapPath[0] = address(this);
        feeRewardSwapPath[1] = r.WETH();
		
		setFees(feeBurnPct, feeRewardPct, feeRewardSwapPath, feeRewardAddress);
		
		_router = router;
		
		setFeeExcluded(_msgSender(), true);
		setFeeExcluded(address(this), true);
		
		
        _balances[_msgSender()] = _totalSupply;
        emit Transfer(address(0), _msgSender(), _totalSupply);
    }
	
	function setRouter(address r) public onlyOwner {
        _router = r;
    }
	
	function setPair(address a, bool pair) public onlyOwner {
        _pair[a] = pair;
    }

	function setFeeExcluded(address a, bool excluded) public onlyOwner {
        _feeExcluded[a] = excluded;
    }
    
    function setFees(uint256 feeBurnPct, uint256 feeRewardPct, address[] memory feeRewardSwapPath, address feeRewardAddress) public onlyOwner {
        require(feeBurnPct.add(feeRewardPct) <= 2500, "Fees must not total more than 100%");
        require(feeRewardSwapPath.length > 1, "Invalid path");
		require(feeRewardAddress != address(0), "Fee reward address must not be zero address");
		
		_feeBurnPct = feeBurnPct;
		_feeRewardPct = feeRewardPct;
		_feeRewardSwapPath = feeRewardSwapPath;
		_feeRewardAddress = feeRewardAddress;
		
    }
	
	function burn(uint256 amount) external {
        _burn(_msgSender(), 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 Returns the token decimals.
    */
    function decimals() external view override returns (uint8) {
        return _decimals;
    }
    
    /**
    * @dev Returns the token symbol.
    */
    function symbol() external view override returns (string memory) {
        return _symbol;
    }
    
    /**
    * @dev Returns the token name.
    */
    function name() external view override returns (string memory) {
        return _name;
    }
    
    /**
    * @dev See {ERC20-totalSupply}.
    */
    function totalSupply() external view override returns (uint256) {
        return _totalSupply;
    }
    
    /**
    * @dev See {ERC20-balanceOf}.
    */
    function balanceOf(address account) external view override returns (uint256) {
        return _balances[account];
    }
    
    /**
    * @dev See {ERC20-transfer}.
    *
    * Requirements:
    *
    * - `recipient` cannot be the zero address.
    * - the caller must have a balance of at least `amount`.
    */
    function transfer(address recipient, uint256 amount) external override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }
    
    /**
    * @dev See {ERC20-allowance}.
    */
    function allowance(address owner, address spender) external view override returns (uint256) {
        return _allowances[owner][spender];
    }
    
    /**
    * @dev See {ERC20-approve}.
    *
    * Requirements:
    *
    * - `spender` cannot be the zero address.
    */
    function approve(address spender, uint256 amount) external override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
    
    /**
    * @dev See {ERC20-transferFrom}.
    *
    * Emits an {Approval} event indicating the updated allowance. This is not
    * required by the EIP. See the note at the beginning of {ERC20};
    *
    * Requirements:
    * - `sender` and `recipient` cannot be the zero address.
    * - `sender` must have a balance of at least `amount`.
    * - the caller must have allowance for `sender`'s tokens of at least
    * `amount`.
    */
    function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
        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 {ERC20-approve}.
    *
    * Emits an {Approval} event indicating the updated allowance.
    *
    * Requirements:
    *
    * - `spender` cannot be the zero address.
    */
    function increaseAllowance(address spender, uint256 addedValue) external returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(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 {ERC20-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) external returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }
	
    function _beforeTokenTransfer(address sender, address recipient, uint256 amount) internal {
	
		LGEWhitelisted._applyLGEWhitelist(sender, recipient, amount);
		
    }

    function _afterTokenTransfer(address sender, address recipient, uint256 amount) internal {}
    
    /**
    * @dev Moves tokens `amount` from `sender` to `recipient`.
    *
    * This is 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:
    *
    * - `sender` cannot be the zero address.
    * - `recipient` cannot be the zero address.
    * - `sender` must have a balance of at least `amount`.
    */
    function _transfer(address sender, address recipient, uint256 amount) internal {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        
        _beforeTokenTransfer(sender, recipient, amount);
		
		if(recipient == address(0x000000000000000000000000000000000000dEaD)) {
            _burn(sender, amount);
            return;
        }
        
        _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
		
		if(_pair[recipient] && !_feeExcluded[sender]) {
			
			uint256 feeBurnAmount = 0;
			
			if(_feeBurnPct > 0) {
			
				feeBurnAmount = amount.mul(_feeBurnPct).div(10000);

				_totalSupply = _totalSupply.sub(feeBurnAmount);
				emit Transfer(sender, address(0), feeBurnAmount);
				
			}
			
			uint256 feeRewardAmount = 0;
			
			if(_feeRewardPct > 0 && _feeRewardAddress != address(0))  {
			    
				feeRewardAmount = amount.mul(_feeRewardPct).div(10000);
				
				if(_router != address(0)) {
				    
    				_balances[address(this)] = _balances[address(this)].add(feeRewardAmount);
    				
    				emit Transfer(sender, address(this), feeRewardAmount);
    				
    				IUniswapV2Router02 r = IUniswapV2Router02(_router);
                    
                    _approve(address(this), _router, feeRewardAmount);
    
                    r.swapExactTokensForTokensSupportingFeeOnTransferTokens(
                        feeRewardAmount,
                        0,
                        _feeRewardSwapPath,
                        _feeRewardAddress,
                        block.timestamp
                    );
                
				} else {
				    _balances[_feeRewardAddress] = _balances[_feeRewardAddress].add(feeRewardAmount);
				    emit Transfer(sender, _feeRewardAddress, feeRewardAmount);
				}
				
			}
			
			amount = amount.sub(feeBurnAmount).sub(feeRewardAmount);
			
		}
		
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
		
		_afterTokenTransfer(sender, recipient, amount);
    }
    
    /**
    * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
    *
    * This is 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 {
        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);
    }
    
}