Contract

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

pragma solidity 0.5.17;

library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * This test is non-exhaustive, and there may be false-negatives: during the
     * execution of a contract's constructor, its address will be reported as
     * not containing a contract.
     *
     * > It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies in extcodesize, which returns 0 for contracts in
        // construction, since the code is only stored at the end of the
        // constructor execution.

        uint256 size;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            size := extcodesize(account)
        }
        return size > 0;
    }
}

interface IERC20 {
    /**
     * @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 `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a `Transfer` event.
     */
    function transfer(address recipient, 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.
     *
     * > 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 `sender` to `recipient` 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 sender,
        address recipient,
        uint256 amount
    ) external returns (bool);

    /**
     * @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
    );
}

library Math {
    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a >= b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow, so we distribute
        return (a / 2) + (b / 2) + (((a % 2) + (b % 2)) / 2);
    }
}

contract ReentrancyGuard {
    /// @dev counter to allow mutex lock with only one SSTORE operation
    uint256 private _guardCounter;

    constructor() internal {
        // The counter starts at one to prevent changing it from zero to a non-zero
        // value, which is a more expensive operation.
        _guardCounter = 1;
    }

    /**
     * @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 make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        _guardCounter += 1;
        uint256 localCounter = _guardCounter;
        _;
        require(
            localCounter == _guardCounter,
            "ReentrancyGuard: reentrant call"
        );
    }
}

library SafeERC20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        callOptionalReturn(
            token,
            abi.encodeWithSelector(token.transfer.selector, to, value)
        );
    }

    function safeTransferFrom(
        IERC20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        callOptionalReturn(
            token,
            abi.encodeWithSelector(token.transferFrom.selector, from, to, value)
        );
    }

    function safeApprove(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        callOptionalReturn(
            token,
            abi.encodeWithSelector(token.approve.selector, spender, value)
        );
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(
            value
        );
        callOptionalReturn(
            token,
            abi.encodeWithSelector(
                token.approve.selector,
                spender,
                newAllowance
            )
        );
    }

    function safeDecreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(
            value
        );
        callOptionalReturn(
            token,
            abi.encodeWithSelector(
                token.approve.selector,
                spender,
                newAllowance
            )
        );
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves.

        // A Solidity high level call has three parts:
        //  1. The target address is checked to verify it contains contract code
        //  2. The call itself is made, and success asserted
        //  3. The return value is decoded, which in turn checks the size of the returned data.
        // solhint-disable-next-line max-line-length
        require(address(token).isContract(), "SafeERC20: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = address(token).call(data);
        require(success, "SafeERC20: low-level call failed");

        if (returndata.length > 0) {
            // Return data is optional
            // solhint-disable-next-line max-line-length
            require(
                abi.decode(returndata, (bool)),
                "SafeERC20: ERC20 operation did not succeed"
            );
        }
    }
}

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) {
        require(b <= a, "SafeMath: subtraction overflow");
        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-solidity/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) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, "SafeMath: division by zero");
        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) {
        require(b != 0, "SafeMath: modulo by zero");
        return a % b;
    }
}

contract MultiRewards is ReentrancyGuard {
    using SafeMath for uint256;
    using SafeERC20 for IERC20;

    /* ========== STATE VARIABLES ========== */

    struct Reward {
        address rewardsDistributor;
        uint256 rewardsDuration;
        uint256 periodFinish;
        uint256 rewardRate;
        uint256 lastUpdateTime;
        uint256 rewardPerTokenStored;
    }
    IERC20 public stakingToken;
    mapping(address => Reward) public rewardData;
    address[] public rewardTokens;

    // user -> reward token -> amount
    mapping(address => mapping(address => uint256))
        public userRewardPerTokenPaid;
    mapping(address => mapping(address => uint256)) public rewards;

    uint256 private _totalSupply;
    mapping(address => uint256) private _balances;
    address private owner;

    /* ========== CONSTRUCTOR ========== */

    constructor(address _owner, address _stakingToken) public {
        stakingToken = IERC20(_stakingToken);
        owner = _owner;
    }

    modifier onlyOwner() {
        require(owner == msg.sender, "Ownable: caller is not the owner");
        _;
    }

    function addReward(
        address _rewardsToken,
        address _rewardsDistributor,
        uint256 _rewardsDuration
    ) public onlyOwner {
        require(rewardData[_rewardsToken].rewardsDuration == 0);
        rewardTokens.push(_rewardsToken);
        rewardData[_rewardsToken].rewardsDistributor = _rewardsDistributor;
        rewardData[_rewardsToken].rewardsDuration = _rewardsDuration;
    }

    /* ========== VIEWS ========== */

    function totalSupply() external view returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(address account) external view returns (uint256) {
        return _balances[account];
    }

    function lastTimeRewardApplicable(address _rewardsToken)
        public
        view
        returns (uint256)
    {
        return
            Math.min(block.timestamp, rewardData[_rewardsToken].periodFinish);
    }

    function rewardPerToken(address _rewardsToken)
        public
        view
        returns (uint256)
    {
        if (_totalSupply == 0) {
            return rewardData[_rewardsToken].rewardPerTokenStored;
        }
        return
            rewardData[_rewardsToken].rewardPerTokenStored.add(
                lastTimeRewardApplicable(_rewardsToken)
                    .sub(rewardData[_rewardsToken].lastUpdateTime)
                    .mul(rewardData[_rewardsToken].rewardRate)
                    .mul(1e18)
                    .div(_totalSupply)
            );
    }

    function earned(address account, address _rewardsToken)
        public
        view
        returns (uint256)
    {
        return
            _balances[account]
                .mul(
                    rewardPerToken(_rewardsToken).sub(
                        userRewardPerTokenPaid[account][_rewardsToken]
                    )
                )
                .div(1e18)
                .add(rewards[account][_rewardsToken]);
    }

    function getRewardForDuration(address _rewardsToken)
        external
        view
        returns (uint256)
    {
        return
            rewardData[_rewardsToken].rewardRate.mul(
                rewardData[_rewardsToken].rewardsDuration
            );
    }

    /* ========== MUTATIVE FUNCTIONS ========== */

    function setRewardsDistributor(
        address _rewardsToken,
        address _rewardsDistributor
    ) external onlyOwner {
        rewardData[_rewardsToken].rewardsDistributor = _rewardsDistributor;
    }

    function stake(uint256 amount)
        external
        nonReentrant
        updateReward(msg.sender)
    {
        require(amount > 0, "Cannot stake 0");
        _totalSupply = _totalSupply.add(amount);
        _balances[msg.sender] = _balances[msg.sender].add(amount);
        stakingToken.safeTransferFrom(msg.sender, address(this), amount);
        emit Staked(msg.sender, amount);
    }

    function withdraw(uint256 amount)
        public
        nonReentrant
        updateReward(msg.sender)
    {
        require(amount > 0, "Cannot withdraw 0");
        _totalSupply = _totalSupply.sub(amount);
        _balances[msg.sender] = _balances[msg.sender].sub(amount);
        stakingToken.safeTransfer(msg.sender, amount);
        emit Withdrawn(msg.sender, amount);
    }

    function getReward() public nonReentrant updateReward(msg.sender) {
        for (uint256 i; i < rewardTokens.length; i++) {
            address _rewardsToken = rewardTokens[i];
            uint256 reward = rewards[msg.sender][_rewardsToken];
            if (reward > 0) {
                rewards[msg.sender][_rewardsToken] = 0;
                IERC20(_rewardsToken).safeTransfer(msg.sender, reward);
                emit RewardPaid(msg.sender, _rewardsToken, reward);
            }
        }
    }

    function exit() external {
        withdraw(_balances[msg.sender]);
        getReward();
    }

    /* ========== RESTRICTED FUNCTIONS ========== */

    function notifyRewardAmount(address _rewardsToken, uint256 reward)
        external
        updateReward(address(0))
    {
        require(rewardData[_rewardsToken].rewardsDistributor == msg.sender);
        // handle the transfer of reward tokens via `transferFrom` to reduce the number
        // of transactions required and ensure correctness of the reward amount
        IERC20(_rewardsToken).safeTransferFrom(
            msg.sender,
            address(this),
            reward
        );

        if (block.timestamp >= rewardData[_rewardsToken].periodFinish) {
            rewardData[_rewardsToken].rewardRate = reward.div(
                rewardData[_rewardsToken].rewardsDuration
            );
        } else {
            uint256 remaining = rewardData[_rewardsToken].periodFinish.sub(
                block.timestamp
            );
            uint256 leftover = remaining.mul(
                rewardData[_rewardsToken].rewardRate
            );
            rewardData[_rewardsToken].rewardRate = reward.add(leftover).div(
                rewardData[_rewardsToken].rewardsDuration
            );
        }

        rewardData[_rewardsToken].lastUpdateTime = block.timestamp;
        rewardData[_rewardsToken].periodFinish = block.timestamp.add(
            rewardData[_rewardsToken].rewardsDuration
        );
        emit RewardAdded(reward);
    }

    // Added to support recovering LP Rewards from other systems such as BAL to be distributed to holders
    function recoverERC20(address tokenAddress, uint256 tokenAmount)
        external
        onlyOwner
    {
        require(
            tokenAddress != address(stakingToken),
            "Cannot withdraw staking token"
        );
        require(
            rewardData[tokenAddress].lastUpdateTime == 0,
            "Cannot withdraw reward token"
        );
        IERC20(tokenAddress).safeTransfer(owner, tokenAmount);
        emit Recovered(tokenAddress, tokenAmount);
    }

    function setRewardsDuration(address _rewardsToken, uint256 _rewardsDuration)
        external
    {
        require(
            block.timestamp > rewardData[_rewardsToken].periodFinish,
            "Reward period still active"
        );
        require(rewardData[_rewardsToken].rewardsDistributor == msg.sender);
        require(_rewardsDuration > 0, "Reward duration must be non-zero");
        rewardData[_rewardsToken].rewardsDuration = _rewardsDuration;
        emit RewardsDurationUpdated(
            _rewardsToken,
            rewardData[_rewardsToken].rewardsDuration
        );
    }

    /* ========== MODIFIERS ========== */

    modifier updateReward(address account) {
        for (uint256 i; i < rewardTokens.length; i++) {
            address token = rewardTokens[i];
            rewardData[token].rewardPerTokenStored = rewardPerToken(token);
            rewardData[token].lastUpdateTime = lastTimeRewardApplicable(token);
            if (account != address(0)) {
                rewards[account][token] = earned(account, token);
                userRewardPerTokenPaid[account][token] = rewardData[token]
                    .rewardPerTokenStored;
            }
        }
        _;
    }

    /* ========== EVENTS ========== */

    event RewardAdded(uint256 reward);
    event Staked(address indexed user, uint256 amount);
    event Withdrawn(address indexed user, uint256 amount);
    event RewardPaid(
        address indexed user,
        address indexed rewardsToken,
        uint256 reward
    );
    event RewardsDurationUpdated(address token, uint256 newDuration);
    event Recovered(address token, uint256 amount);
}

{
  "evmVersion": "istanbul",
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "libraries": {
    "MultiRewards.sol": {}
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_owner","type":"address"},{"internalType":"address","name":"_stakingToken","type":"address"}],"payable":false,"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Recovered","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":true,"internalType":"address","name":"rewardsToken","type":"address"},{"indexed":false,"internalType":"uint256","name":"reward","type":"uint256"}],"name":"RewardPaid","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"newDuration","type":"uint256"}],"name":"RewardsDurationUpdated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Staked","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"user","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"Withdrawn","type":"event"},{"constant":false,"inputs":[{"internalType":"address","name":"_rewardsToken","type":"address"},{"internalType":"address","name":"_rewardsDistributor","type":"address"},{"internalType":"uint256","name":"_rewardsDuration","type":"uint256"}],"name":"addReward","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"account","type":"address"},{"internalType":"address","name":"_rewardsToken","type":"address"}],"name":"earned","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[],"name":"exit","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[],"name":"getReward","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"_rewardsToken","type":"address"}],"name":"getRewardForDuration","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"_rewardsToken","type":"address"}],"name":"lastTimeRewardApplicable","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_rewardsToken","type":"address"},{"internalType":"uint256","name":"reward","type":"uint256"}],"name":"notifyRewardAmount","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"tokenAddress","type":"address"},{"internalType":"uint256","name":"tokenAmount","type":"uint256"}],"name":"recoverERC20","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"rewardData","outputs":[{"internalType":"address","name":"rewardsDistributor","type":"address"},{"internalType":"uint256","name":"rewardsDuration","type":"uint256"},{"internalType":"uint256","name":"periodFinish","type":"uint256"},{"internalType":"uint256","name":"rewardRate","type":"uint256"},{"internalType":"uint256","name":"lastUpdateTime","type":"uint256"},{"internalType":"uint256","name":"rewardPerTokenStored","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"_rewardsToken","type":"address"}],"name":"rewardPerToken","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"uint256","name":"","type":"uint256"}],"name":"rewardTokens","outputs":[{"internalType":"address","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"rewards","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_rewardsToken","type":"address"},{"internalType":"address","name":"_rewardsDistributor","type":"address"}],"name":"setRewardsDistributor","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"address","name":"_rewardsToken","type":"address"},{"internalType":"uint256","name":"_rewardsDuration","type":"uint256"}],"name":"setRewardsDuration","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"stake","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"},{"constant":true,"inputs":[],"name":"stakingToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":true,"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"userRewardPerTokenPaid","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"payable":false,"stateMutability":"view","type":"function"},{"constant":false,"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"withdraw","outputs":[],"payable":false,"stateMutability":"nonpayable","type":"function"}]

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