pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;

struct UserInfo {
    uint256 amount;
    uint256 rewardDebt;
}

struct PoolInfo {
    IERC20 lpToken; // Address of LP token contract.
    uint256 allocPoint; // How many allocation points assigned to this pool. SUSHIs to distribute per block.
    uint256 lastRewardBlock; // Last block number that SUSHIs distribution occurs.
    uint256 accSushiPerShare; // Accumulated SUSHIs per share, times 1e12. See below.
}

interface IERC20 {
    function totalSupply() external view returns (uint256);

    function balanceOf(address account) external view returns (uint256);

    function allowance(address owner, address spender) external view returns (uint256);

    function approve(address spender, 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);

    /// @notice EIP 2612
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;
}

interface IMasterChef {
    function poolLength() external view returns (uint256);

    function updatePool(uint256 pid) external returns (PoolInfo memory);

    function poolInfo(uint256 pid) external view returns (address, uint256, uint256, uint256);

    function userInfo(uint256 _pid, address _user)
        external
        view
        returns (uint256, uint256);

    function deposit(
        uint256 pid,
        uint256 amount
    ) external;

    function withdraw(
        uint256 pid,
        uint256 amount
    ) external;

    function emergencyWithdraw(uint256 pid, address to) external;
}

interface IMasterChefV2 {
    function poolLength() external view returns (uint256);

    function updatePool(uint256 pid) external returns (PoolInfo memory);

    function lpToken(uint256 pid) external view returns (address);

    function userInfo(uint256 _pid, address _user)
        external
        view
        returns (uint256, uint256);

    function deposit(
        uint256 pid,
        uint256 amount,
        address to
    ) external;

    function withdraw(
        uint256 pid,
        uint256 amount,
        address to
    ) external;

    function emergencyWithdraw(uint256 pid, address to) external;

    function harvest(uint256 pid, address to) external;

    function withdrawAndHarvest(
        uint256 pid,
        uint256 amount,
        address to
    ) external;
}

interface ISushiSwapFactory {
    function getPair(address tokenA, address tokenB)
        external
        view
        returns (address pair);

    function allPairs(uint256) external view returns (address pair);

    function allPairsLength() external view returns (uint256);

    function feeTo() external view returns (address);

    function feeToSetter() external view returns (address);

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