pragma solidity ^0.7.6;
pragma abicoder v2;

interface UniswapV3Pool {
    struct Slot0 {
        uint160 sqrtPriceX96;
        int24 tick;
        uint16 observationIndex;
        uint16 observationCardinality;
        uint16 observationCardinalityNext;
        uint8 feeProtocol;
        bool unlocked;
    }

    function liquidity() external view returns (uint128);

    function slot0() external view returns (Slot0 memory);
}

interface ISwapRouter {
    struct ExactInputSingleParams {
        address tokenIn;
        address tokenOut;
        uint24 fee;
        address recipient;
        uint256 deadline;
        uint256 amountIn;
        uint256 amountOutMinimum;
        uint160 sqrtPriceLimitX96;
    }

    function exactInputSingle(ExactInputSingleParams calldata params)
        external
        payable
        returns (uint256);
}