@levxdao/airdrop/deployments/mainnet/solcInputs/a8379fb73a7607fa8cd56eccf8e7a817.json

[](http://www.wtfpl.net/)

{
  "language": "Solidity",
  "sources": {
    "contracts/ETHAirdrop.sol": {
      "content": "// SPDX-License-Identifier: UNLICENSED\n\npragma solidity =0.8.3;\n\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport \"./uniswapv2/interfaces/IUniswapV2Router01.sol\";\nimport \"./uniswapv2/interfaces/IUniswapV2Pair.sol\";\nimport \"./uniswapv2/interfaces/IWETH.sol\";\nimport \"./uniswapv2/libraries/UniswapV2Library.sol\";\nimport \"./MerkleProof.sol\";\n\ncontract ETHAirdrop is Ownable, MerkleProof {\n    using SafeERC20 for IERC20;\n\n    address public immutable levx;\n    address public immutable weth;\n    address public immutable router;\n    mapping(bytes32 => bool) public isValidMerkleRoot;\n    mapping(bytes32 => mapping(bytes32 => bool)) internal _hasClaimed;\n\n    event Deposit(uint256 amount, address from);\n    event Withdraw(uint256 amount, address to);\n    event AddMerkleRoot(bytes32 indexed merkleRoot);\n    event Claim(bytes32 indexed merkleRoot, address indexed account, uint256 amount, address to);\n\n    modifier ensure(uint256 deadline) {\n        require(deadline >= block.timestamp, \"LEVX: EXPIRED\");\n        _;\n    }\n\n    constructor(\n        address _owner,\n        address _levx,\n        address _weth,\n        address _router\n    ) {\n        levx = _levx;\n        weth = _weth;\n        router = _router;\n        _transferOwnership(_owner);\n    }\n\n    receive() external payable {\n        emit Deposit(msg.value, msg.sender);\n    }\n\n    function withdraw(uint256 amount) external onlyOwner {\n        payable(msg.sender).transfer(amount);\n\n        emit Withdraw(amount, msg.sender);\n    }\n\n    function addMerkleRoot(bytes32 merkleRoot) external onlyOwner {\n        require(!isValidMerkleRoot[merkleRoot], \"SHOYU: DUPLICATE_ROOT\");\n        isValidMerkleRoot[merkleRoot] = true;\n\n        emit AddMerkleRoot(merkleRoot);\n    }\n\n    function claim(\n        bytes32 merkleRoot,\n        bytes32[] calldata merkleProof,\n        uint256 amount,\n        address to\n    ) public {\n        require(isValidMerkleRoot[merkleRoot], \"SHOYU: INVALID_ROOT\");\n\n        bytes32 leaf = keccak256(abi.encodePacked(msg.sender, amount));\n        require(!_hasClaimed[merkleRoot][leaf], \"SHOYU: FORBIDDEN\");\n        require(verify(merkleRoot, leaf, merkleProof), \"SHOYU: INVALID_PROOF\");\n\n        _hasClaimed[merkleRoot][leaf] = true;\n        if (to != address(this)) {\n            payable(to).transfer(amount);\n        }\n\n        emit Claim(merkleRoot, msg.sender, amount, to);\n    }\n\n    function batchClaim(\n        bytes32[] calldata merkleRoots,\n        bytes32[][] calldata merkleProofs,\n        uint256[] calldata amounts,\n        address to\n    ) external {\n        for (uint256 i; i < merkleRoots.length; i++) {\n            claim(merkleRoots[i], merkleProofs[i], amounts[i], to);\n        }\n    }\n\n    function claimAndSwapToLevx(\n        bytes32 merkleRoot,\n        bytes32[] calldata merkleProof,\n        uint256 amount,\n        uint256 amountOutMin,\n        address to,\n        uint256 deadline\n    ) public ensure(deadline) returns (uint256 amountOut) {\n        claim(merkleRoot, merkleProof, amount, address(this));\n\n        address[] memory path = new address[](2);\n        path[0] = weth;\n        path[1] = levx;\n        uint256[] memory amounts = IUniswapV2Router01(router).swapExactETHForTokens{value: amount}(\n            amountOutMin,\n            path,\n            to,\n            deadline\n        );\n        amountOut = amounts[1];\n    }\n\n    function batchClaimAndSwapToLevx(\n        bytes32[] calldata merkleRoots,\n        bytes32[][] calldata merkleProofs,\n        uint256[] calldata amounts,\n        uint256 amountOutMin,\n        address to,\n        uint256 deadline\n    ) public ensure(deadline) returns (uint256 amountOut) {\n        uint256 amountIn;\n        for (uint256 i; i < merkleRoots.length; i++) {\n            uint256 amount = amounts[i];\n            claim(merkleRoots[i], merkleProofs[i], amount, address(this));\n            amountIn += amount;\n        }\n\n        address[] memory path = new address[](2);\n        path[0] = weth;\n        path[1] = levx;\n        uint256[] memory _amounts = IUniswapV2Router01(router).swapExactETHForTokens{value: amountIn}(\n            amountOutMin,\n            path,\n            to,\n            deadline\n        );\n        amountOut = _amounts[1];\n    }\n}\n"
    },
    "@openzeppelin/contracts/access/Ownable.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (access/Ownable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../utils/Context.sol\";\n\n/**\n * @dev Contract module which provides a basic access control mechanism, where\n * there is an account (an owner) that can be granted exclusive access to\n * specific functions.\n *\n * By default, the owner account will be the one that deploys the contract. This\n * can later be changed with {transferOwnership}.\n *\n * This module is used through inheritance. It will make available the modifier\n * `onlyOwner`, which can be applied to your functions to restrict their use to\n * the owner.\n */\nabstract contract Ownable is Context {\n    address private _owner;\n\n    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);\n\n    /**\n     * @dev Initializes the contract setting the deployer as the initial owner.\n     */\n    constructor() {\n        _transferOwnership(_msgSender());\n    }\n\n    /**\n     * @dev Returns the address of the current owner.\n     */\n    function owner() public view virtual returns (address) {\n        return _owner;\n    }\n\n    /**\n     * @dev Throws if called by any account other than the owner.\n     */\n    modifier onlyOwner() {\n        require(owner() == _msgSender(), \"Ownable: caller is not the owner\");\n        _;\n    }\n\n    /**\n     * @dev Leaves the contract without owner. It will not be possible to call\n     * `onlyOwner` functions anymore. Can only be called by the current owner.\n     *\n     * NOTE: Renouncing ownership will leave the contract without an owner,\n     * thereby removing any functionality that is only available to the owner.\n     */\n    function renounceOwnership() public virtual onlyOwner {\n        _transferOwnership(address(0));\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Can only be called by the current owner.\n     */\n    function transferOwnership(address newOwner) public virtual onlyOwner {\n        require(newOwner != address(0), \"Ownable: new owner is the zero address\");\n        _transferOwnership(newOwner);\n    }\n\n    /**\n     * @dev Transfers ownership of the contract to a new account (`newOwner`).\n     * Internal function without access restriction.\n     */\n    function _transferOwnership(address newOwner) internal virtual {\n        address oldOwner = _owner;\n        _owner = newOwner;\n        emit OwnershipTransferred(oldOwner, newOwner);\n    }\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/IERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (token/ERC20/IERC20.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n    /**\n     * @dev Returns the amount of tokens in existence.\n     */\n    function totalSupply() external view returns (uint256);\n\n    /**\n     * @dev Returns the amount of tokens owned by `account`.\n     */\n    function balanceOf(address account) external view returns (uint256);\n\n    /**\n     * @dev Moves `amount` tokens from the caller's account to `recipient`.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transfer(address recipient, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Returns the remaining number of tokens that `spender` will be\n     * allowed to spend on behalf of `owner` through {transferFrom}. This is\n     * zero by default.\n     *\n     * This value changes when {approve} or {transferFrom} are called.\n     */\n    function allowance(address owner, address spender) external view returns (uint256);\n\n    /**\n     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * IMPORTANT: Beware that changing an allowance with this method brings the risk\n     * that someone may use both the old and the new allowance by unfortunate\n     * transaction ordering. One possible solution to mitigate this race\n     * condition is to first reduce the spender's allowance to 0 and set the\n     * desired value afterwards:\n     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n     *\n     * Emits an {Approval} event.\n     */\n    function approve(address spender, uint256 amount) external returns (bool);\n\n    /**\n     * @dev Moves `amount` tokens from `sender` to `recipient` using the\n     * allowance mechanism. `amount` is then deducted from the caller's\n     * allowance.\n     *\n     * Returns a boolean value indicating whether the operation succeeded.\n     *\n     * Emits a {Transfer} event.\n     */\n    function transferFrom(\n        address sender,\n        address recipient,\n        uint256 amount\n    ) external returns (bool);\n\n    /**\n     * @dev Emitted when `value` tokens are moved from one account (`from`) to\n     * another (`to`).\n     *\n     * Note that `value` may be zero.\n     */\n    event Transfer(address indexed from, address indexed to, uint256 value);\n\n    /**\n     * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n     * a call to {approve}. `value` is the new allowance.\n     */\n    event Approval(address indexed owner, address indexed spender, uint256 value);\n}\n"
    },
    "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (token/ERC20/utils/SafeERC20.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../IERC20.sol\";\nimport \"../../../utils/Address.sol\";\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n    using Address for address;\n\n    function safeTransfer(\n        IERC20 token,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n    }\n\n    function safeTransferFrom(\n        IERC20 token,\n        address from,\n        address to,\n        uint256 value\n    ) internal {\n        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n    }\n\n    /**\n     * @dev Deprecated. This function has issues similar to the ones found in\n     * {IERC20-approve}, and its usage is discouraged.\n     *\n     * Whenever possible, use {safeIncreaseAllowance} and\n     * {safeDecreaseAllowance} instead.\n     */\n    function safeApprove(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        // safeApprove should only be called when setting an initial allowance,\n        // or when resetting it to zero. To increase and decrease it, use\n        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n        require(\n            (value == 0) || (token.allowance(address(this), spender) == 0),\n            \"SafeERC20: approve from non-zero to non-zero allowance\"\n        );\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n    }\n\n    function safeIncreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        uint256 newAllowance = token.allowance(address(this), spender) + value;\n        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n    }\n\n    function safeDecreaseAllowance(\n        IERC20 token,\n        address spender,\n        uint256 value\n    ) internal {\n        unchecked {\n            uint256 oldAllowance = token.allowance(address(this), spender);\n            require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n            uint256 newAllowance = oldAllowance - value;\n            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n        }\n    }\n\n    /**\n     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n     * on the return value: the return value is optional (but if data is returned, it must not be false).\n     * @param token The token targeted by the call.\n     * @param data The call data (encoded using abi.encode or one of its variants).\n     */\n    function _callOptionalReturn(IERC20 token, bytes memory data) private {\n        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n        // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n        // the target address contains contract code and also asserts for success in the low-level call.\n\n        bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n        if (returndata.length > 0) {\n            // Return data is optional\n            require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n        }\n    }\n}\n"
    },
    "contracts/uniswapv2/interfaces/IUniswapV2Router01.sol": {
      "content": "// SPDX-License-Identifier: GPL-3.0\n\npragma solidity >=0.6.2;\n\ninterface IUniswapV2Router01 {\n    function factory() external pure returns (address);\n    function WETH() external pure returns (address);\n\n    function addLiquidity(\n        address tokenA,\n        address tokenB,\n        uint amountADesired,\n        uint amountBDesired,\n        uint amountAMin,\n        uint amountBMin,\n        address to,\n        uint deadline\n    ) external returns (uint amountA, uint amountB, uint liquidity);\n    function addLiquidityETH(\n        address token,\n        uint amountTokenDesired,\n        uint amountTokenMin,\n        uint amountETHMin,\n        address to,\n        uint deadline\n    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);\n    function removeLiquidity(\n        address tokenA,\n        address tokenB,\n        uint liquidity,\n        uint amountAMin,\n        uint amountBMin,\n        address to,\n        uint deadline\n    ) external returns (uint amountA, uint amountB);\n    function removeLiquidityETH(\n        address token,\n        uint liquidity,\n        uint amountTokenMin,\n        uint amountETHMin,\n        address to,\n        uint deadline\n    ) external returns (uint amountToken, uint amountETH);\n    function removeLiquidityWithPermit(\n        address tokenA,\n        address tokenB,\n        uint liquidity,\n        uint amountAMin,\n        uint amountBMin,\n        address to,\n        uint deadline,\n        bool approveMax, uint8 v, bytes32 r, bytes32 s\n    ) external returns (uint amountA, uint amountB);\n    function removeLiquidityETHWithPermit(\n        address token,\n        uint liquidity,\n        uint amountTokenMin,\n        uint amountETHMin,\n        address to,\n        uint deadline,\n        bool approveMax, uint8 v, bytes32 r, bytes32 s\n    ) external returns (uint amountToken, uint amountETH);\n    function swapExactTokensForTokens(\n        uint amountIn,\n        uint amountOutMin,\n        address[] calldata path,\n        address to,\n        uint deadline\n    ) external returns (uint[] memory amounts);\n    function swapTokensForExactTokens(\n        uint amountOut,\n        uint amountInMax,\n        address[] calldata path,\n        address to,\n        uint deadline\n    ) external returns (uint[] memory amounts);\n    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)\n        external\n        payable\n        returns (uint[] memory amounts);\n    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)\n        external\n        returns (uint[] memory amounts);\n    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)\n        external\n        returns (uint[] memory amounts);\n    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)\n        external\n        payable\n        returns (uint[] memory amounts);\n\n    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);\n    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);\n    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);\n    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);\n    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);\n}"
    },
    "contracts/uniswapv2/interfaces/IUniswapV2Pair.sol": {
      "content": "// SPDX-License-Identifier: GPL-3.0\n\npragma solidity >=0.5.0;\n\ninterface IUniswapV2Pair {\n    event Approval(address indexed owner, address indexed spender, uint value);\n    event Transfer(address indexed from, address indexed to, uint value);\n\n    function name() external pure returns (string memory);\n    function symbol() external pure returns (string memory);\n    function decimals() external pure returns (uint8);\n    function totalSupply() external view returns (uint);\n    function balanceOf(address owner) external view returns (uint);\n    function allowance(address owner, address spender) external view returns (uint);\n\n    function approve(address spender, uint value) external returns (bool);\n    function transfer(address to, uint value) external returns (bool);\n    function transferFrom(address from, address to, uint value) external returns (bool);\n\n    function DOMAIN_SEPARATOR() external view returns (bytes32);\n    function PERMIT_TYPEHASH() external pure returns (bytes32);\n    function nonces(address owner) external view returns (uint);\n\n    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;\n\n    event Mint(address indexed sender, uint amount0, uint amount1);\n    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);\n    event Swap(\n        address indexed sender,\n        uint amount0In,\n        uint amount1In,\n        uint amount0Out,\n        uint amount1Out,\n        address indexed to\n    );\n    event Sync(uint112 reserve0, uint112 reserve1);\n\n    function MINIMUM_LIQUIDITY() external pure returns (uint);\n    function factory() external view returns (address);\n    function token0() external view returns (address);\n    function token1() external view returns (address);\n    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);\n    function price0CumulativeLast() external view returns (uint);\n    function price1CumulativeLast() external view returns (uint);\n    function kLast() external view returns (uint);\n\n    function mint(address to) external returns (uint liquidity);\n    function burn(address to) external returns (uint amount0, uint amount1);\n    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;\n    function skim(address to) external;\n    function sync() external;\n\n    function initialize(address, address) external;\n}"
    },
    "contracts/uniswapv2/interfaces/IWETH.sol": {
      "content": "// SPDX-License-Identifier: GPL-3.0\n\npragma solidity >=0.5.0;\n\ninterface IWETH {\n    function deposit() external payable;\n    function transfer(address to, uint value) external returns (bool);\n    function withdraw(uint) external;\n}"
    },
    "contracts/uniswapv2/libraries/UniswapV2Library.sol": {
      "content": "// SPDX-License-Identifier: GPL-3.0\n\npragma solidity =0.8.3;\n\nimport \"@openzeppelin/contracts/utils/math/SafeMath.sol\";\nimport \"../interfaces/IUniswapV2Pair.sol\";\n\nlibrary UniswapV2Library {\n    using SafeMath for uint256;\n\n    // returns sorted token addresses, used to handle return values from pairs sorted in this order\n    function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {\n        require(tokenA != tokenB, \"UniswapV2Library: IDENTICAL_ADDRESSES\");\n        (token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);\n        require(token0 != address(0), \"UniswapV2Library: ZERO_ADDRESS\");\n    }\n\n    // calculates the CREATE2 address for a pair without making any external calls\n    function pairFor(\n        address factory,\n        address tokenA,\n        address tokenB\n    ) internal pure returns (address pair) {\n        (address token0, address token1) = sortTokens(tokenA, tokenB);\n        pair = address(\n            uint160(\n                uint256(\n                    keccak256(\n                        abi.encodePacked(\n                            hex\"ff\",\n                            factory,\n                            keccak256(abi.encodePacked(token0, token1)),\n                            hex\"e18a34eb0e04b04f7a0ac29a6e80748dca96319b42c54d679cb821dca90c6303\" // init code hash\n                        )\n                    )\n                )\n            )\n        );\n    }\n\n    // fetches and sorts the reserves for a pair\n    function getReserves(\n        address factory,\n        address tokenA,\n        address tokenB\n    ) internal view returns (uint256 reserveA, uint256 reserveB) {\n        (address token0, ) = sortTokens(tokenA, tokenB);\n        (uint256 reserve0, uint256 reserve1, ) = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)).getReserves();\n        (reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);\n    }\n\n    // given some amount of an asset and pair reserves, returns an equivalent amount of the other asset\n    function quote(\n        uint256 amountA,\n        uint256 reserveA,\n        uint256 reserveB\n    ) internal pure returns (uint256 amountB) {\n        require(amountA > 0, \"UniswapV2Library: INSUFFICIENT_AMOUNT\");\n        require(reserveA > 0 && reserveB > 0, \"UniswapV2Library: INSUFFICIENT_LIQUIDITY\");\n        amountB = amountA.mul(reserveB) / reserveA;\n    }\n\n    // given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset\n    function getAmountOut(\n        uint256 amountIn,\n        uint256 reserveIn,\n        uint256 reserveOut\n    ) internal pure returns (uint256 amountOut) {\n        require(amountIn > 0, \"UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT\");\n        require(reserveIn > 0 && reserveOut > 0, \"UniswapV2Library: INSUFFICIENT_LIQUIDITY\");\n        uint256 amountInWithFee = amountIn.mul(997);\n        uint256 numerator = amountInWithFee.mul(reserveOut);\n        uint256 denominator = reserveIn.mul(1000).add(amountInWithFee);\n        amountOut = numerator / denominator;\n    }\n\n    // given an output amount of an asset and pair reserves, returns a required input amount of the other asset\n    function getAmountIn(\n        uint256 amountOut,\n        uint256 reserveIn,\n        uint256 reserveOut\n    ) internal pure returns (uint256 amountIn) {\n        require(amountOut > 0, \"UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT\");\n        require(reserveIn > 0 && reserveOut > 0, \"UniswapV2Library: INSUFFICIENT_LIQUIDITY\");\n        uint256 numerator = reserveIn.mul(amountOut).mul(1000);\n        uint256 denominator = reserveOut.sub(amountOut).mul(997);\n        amountIn = (numerator / denominator).add(1);\n    }\n\n    // performs chained getAmountOut calculations on any number of pairs\n    function getAmountsOut(\n        address factory,\n        uint256 amountIn,\n        address[] memory path\n    ) internal view returns (uint256[] memory amounts) {\n        require(path.length >= 2, \"UniswapV2Library: INVALID_PATH\");\n        amounts = new uint256[](path.length);\n        amounts[0] = amountIn;\n        for (uint256 i; i < path.length - 1; i++) {\n            (uint256 reserveIn, uint256 reserveOut) = getReserves(factory, path[i], path[i + 1]);\n            amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);\n        }\n    }\n\n    // performs chained getAmountIn calculations on any number of pairs\n    function getAmountsIn(\n        address factory,\n        uint256 amountOut,\n        address[] memory path\n    ) internal view returns (uint256[] memory amounts) {\n        require(path.length >= 2, \"UniswapV2Library: INVALID_PATH\");\n        amounts = new uint256[](path.length);\n        amounts[amounts.length - 1] = amountOut;\n        for (uint256 i = path.length - 1; i > 0; i--) {\n            (uint256 reserveIn, uint256 reserveOut) = getReserves(factory, path[i - 1], path[i]);\n            amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);\n        }\n    }\n}\n"
    },
    "contracts/MerkleProof.sol": {
      "content": "// SPDX-License-Identifier: UNLICENSED\n\npragma solidity =0.8.3;\n\ncontract MerkleProof {\n    function verify(\n        bytes32 root,\n        bytes32 leaf,\n        bytes32[] memory proof\n    ) public pure returns (bool) {\n        bytes32 computedHash = leaf;\n\n        for (uint256 i = 0; i < proof.length; i++) {\n            bytes32 proofElement = proof[i];\n\n            if (computedHash < proofElement) {\n                // Hash(current computed hash + current element of the proof)\n                computedHash = keccak256(abi.encodePacked(computedHash, proofElement));\n            } else {\n                // Hash(current element of the proof + current computed hash)\n                computedHash = keccak256(abi.encodePacked(proofElement, computedHash));\n            }\n        }\n\n        // Check if the computed hash (root) is equal to the provided root\n        return computedHash == root;\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/Context.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (utils/Context.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Provides information about the current execution context, including the\n * sender of the transaction and its data. While these are generally available\n * via msg.sender and msg.data, they should not be accessed in such a direct\n * manner, since when dealing with meta-transactions the account sending and\n * paying for execution may not be the actual sender (as far as an application\n * is concerned).\n *\n * This contract is only required for intermediate, library-like contracts.\n */\nabstract contract Context {\n    function _msgSender() internal view virtual returns (address) {\n        return msg.sender;\n    }\n\n    function _msgData() internal view virtual returns (bytes calldata) {\n        return msg.data;\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/Address.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (utils/Address.sol)\n\npragma solidity ^0.8.0;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n    /**\n     * @dev Returns true if `account` is a contract.\n     *\n     * [IMPORTANT]\n     * ====\n     * It is unsafe to assume that an address for which this function returns\n     * false is an externally-owned account (EOA) and not a contract.\n     *\n     * Among others, `isContract` will return false for the following\n     * types of addresses:\n     *\n     *  - an externally-owned account\n     *  - a contract in construction\n     *  - an address where a contract will be created\n     *  - an address where a contract lived, but was destroyed\n     * ====\n     */\n    function isContract(address account) internal view returns (bool) {\n        // This method relies on extcodesize, which returns 0 for contracts in\n        // construction, since the code is only stored at the end of the\n        // constructor execution.\n\n        uint256 size;\n        assembly {\n            size := extcodesize(account)\n        }\n        return size > 0;\n    }\n\n    /**\n     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n     * `recipient`, forwarding all available gas and reverting on errors.\n     *\n     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n     * of certain opcodes, possibly making contracts go over the 2300 gas limit\n     * imposed by `transfer`, making them unable to receive funds via\n     * `transfer`. {sendValue} removes this limitation.\n     *\n     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n     *\n     * IMPORTANT: because control is transferred to `recipient`, care must be\n     * taken to not create reentrancy vulnerabilities. Consider using\n     * {ReentrancyGuard} or the\n     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n     */\n    function sendValue(address payable recipient, uint256 amount) internal {\n        require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n        (bool success, ) = recipient.call{value: amount}(\"\");\n        require(success, \"Address: unable to send value, recipient may have reverted\");\n    }\n\n    /**\n     * @dev Performs a Solidity function call using a low level `call`. A\n     * plain `call` is an unsafe replacement for a function call: use this\n     * function instead.\n     *\n     * If `target` reverts with a revert reason, it is bubbled up by this\n     * function (like regular Solidity function calls).\n     *\n     * Returns the raw returned data. To convert to the expected return value,\n     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n     *\n     * Requirements:\n     *\n     * - `target` must be a contract.\n     * - calling `target` with `data` must not revert.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionCall(target, data, \"Address: low-level call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n     * `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, 0, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but also transferring `value` wei to `target`.\n     *\n     * Requirements:\n     *\n     * - the calling contract must have an ETH balance of at least `value`.\n     * - the called Solidity function must be `payable`.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value\n    ) internal returns (bytes memory) {\n        return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n     * with `errorMessage` as a fallback revert reason when `target` reverts.\n     *\n     * _Available since v3.1._\n     */\n    function functionCallWithValue(\n        address target,\n        bytes memory data,\n        uint256 value,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(address(this).balance >= value, \"Address: insufficient balance for call\");\n        require(isContract(target), \"Address: call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.call{value: value}(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n        return functionStaticCall(target, data, \"Address: low-level static call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a static call.\n     *\n     * _Available since v3.3._\n     */\n    function functionStaticCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal view returns (bytes memory) {\n        require(isContract(target), \"Address: static call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.staticcall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n        return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n    }\n\n    /**\n     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n     * but performing a delegate call.\n     *\n     * _Available since v3.4._\n     */\n    function functionDelegateCall(\n        address target,\n        bytes memory data,\n        string memory errorMessage\n    ) internal returns (bytes memory) {\n        require(isContract(target), \"Address: delegate call to non-contract\");\n\n        (bool success, bytes memory returndata) = target.delegatecall(data);\n        return verifyCallResult(success, returndata, errorMessage);\n    }\n\n    /**\n     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the\n     * revert reason using the provided one.\n     *\n     * _Available since v4.3._\n     */\n    function verifyCallResult(\n        bool success,\n        bytes memory returndata,\n        string memory errorMessage\n    ) internal pure returns (bytes memory) {\n        if (success) {\n            return returndata;\n        } else {\n            // Look for revert reason and bubble it up if present\n            if (returndata.length > 0) {\n                // The easiest way to bubble the revert reason is using memory via assembly\n\n                assembly {\n                    let returndata_size := mload(returndata)\n                    revert(add(32, returndata), returndata_size)\n                }\n            } else {\n                revert(errorMessage);\n            }\n        }\n    }\n}\n"
    },
    "@openzeppelin/contracts/utils/math/SafeMath.sol": {
      "content": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts v4.4.0 (utils/math/SafeMath.sol)\n\npragma solidity ^0.8.0;\n\n// CAUTION\n// This version of SafeMath should only be used with Solidity 0.8 or later,\n// because it relies on the compiler's built in overflow checks.\n\n/**\n * @dev Wrappers over Solidity's arithmetic operations.\n *\n * NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler\n * now has built in overflow checking.\n */\nlibrary SafeMath {\n    /**\n     * @dev Returns the addition of two unsigned integers, with an overflow flag.\n     *\n     * _Available since v3.4._\n     */\n    function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n        unchecked {\n            uint256 c = a + b;\n            if (c < a) return (false, 0);\n            return (true, c);\n        }\n    }\n\n    /**\n     * @dev Returns the substraction of two unsigned integers, with an overflow flag.\n     *\n     * _Available since v3.4._\n     */\n    function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n        unchecked {\n            if (b > a) return (false, 0);\n            return (true, a - b);\n        }\n    }\n\n    /**\n     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.\n     *\n     * _Available since v3.4._\n     */\n    function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n        unchecked {\n            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\n            // benefit is lost if 'b' is also tested.\n            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\n            if (a == 0) return (true, 0);\n            uint256 c = a * b;\n            if (c / a != b) return (false, 0);\n            return (true, c);\n        }\n    }\n\n    /**\n     * @dev Returns the division of two unsigned integers, with a division by zero flag.\n     *\n     * _Available since v3.4._\n     */\n    function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n        unchecked {\n            if (b == 0) return (false, 0);\n            return (true, a / b);\n        }\n    }\n\n    /**\n     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.\n     *\n     * _Available since v3.4._\n     */\n    function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {\n        unchecked {\n            if (b == 0) return (false, 0);\n            return (true, a % b);\n        }\n    }\n\n    /**\n     * @dev Returns the addition of two unsigned integers, reverting on\n     * overflow.\n     *\n     * Counterpart to Solidity's `+` operator.\n     *\n     * Requirements:\n     *\n     * - Addition cannot overflow.\n     */\n    function add(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a + b;\n    }\n\n    /**\n     * @dev Returns the subtraction of two unsigned integers, reverting on\n     * overflow (when the result is negative).\n     *\n     * Counterpart to Solidity's `-` operator.\n     *\n     * Requirements:\n     *\n     * - Subtraction cannot overflow.\n     */\n    function sub(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a - b;\n    }\n\n    /**\n     * @dev Returns the multiplication of two unsigned integers, reverting on\n     * overflow.\n     *\n     * Counterpart to Solidity's `*` operator.\n     *\n     * Requirements:\n     *\n     * - Multiplication cannot overflow.\n     */\n    function mul(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a * b;\n    }\n\n    /**\n     * @dev Returns the integer division of two unsigned integers, reverting on\n     * division by zero. The result is rounded towards zero.\n     *\n     * Counterpart to Solidity's `/` operator.\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function div(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a / b;\n    }\n\n    /**\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n     * reverting when dividing by zero.\n     *\n     * Counterpart to Solidity's `%` operator. This function uses a `revert`\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\n     * invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function mod(uint256 a, uint256 b) internal pure returns (uint256) {\n        return a % b;\n    }\n\n    /**\n     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on\n     * overflow (when the result is negative).\n     *\n     * CAUTION: This function is deprecated because it requires allocating memory for the error\n     * message unnecessarily. For custom revert reasons use {trySub}.\n     *\n     * Counterpart to Solidity's `-` operator.\n     *\n     * Requirements:\n     *\n     * - Subtraction cannot overflow.\n     */\n    function sub(\n        uint256 a,\n        uint256 b,\n        string memory errorMessage\n    ) internal pure returns (uint256) {\n        unchecked {\n            require(b <= a, errorMessage);\n            return a - b;\n        }\n    }\n\n    /**\n     * @dev Returns the integer division of two unsigned integers, reverting with custom message on\n     * division by zero. The result is rounded towards zero.\n     *\n     * Counterpart to Solidity's `/` operator. Note: this function uses a\n     * `revert` opcode (which leaves remaining gas untouched) while Solidity\n     * uses an invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function div(\n        uint256 a,\n        uint256 b,\n        string memory errorMessage\n    ) internal pure returns (uint256) {\n        unchecked {\n            require(b > 0, errorMessage);\n            return a / b;\n        }\n    }\n\n    /**\n     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),\n     * reverting with custom message when dividing by zero.\n     *\n     * CAUTION: This function is deprecated because it requires allocating memory for the error\n     * message unnecessarily. For custom revert reasons use {tryMod}.\n     *\n     * Counterpart to Solidity's `%` operator. This function uses a `revert`\n     * opcode (which leaves remaining gas untouched) while Solidity uses an\n     * invalid opcode to revert (consuming all remaining gas).\n     *\n     * Requirements:\n     *\n     * - The divisor cannot be zero.\n     */\n    function mod(\n        uint256 a,\n        uint256 b,\n        string memory errorMessage\n    ) internal pure returns (uint256) {\n        unchecked {\n            require(b > 0, errorMessage);\n            return a % b;\n        }\n    }\n}\n"
    },
    "contracts/LevxAirdrop.sol": {
      "content": "// SPDX-License-Identifier: UNLICENSED\n\npragma solidity =0.8.3;\n\nimport \"@openzeppelin/contracts/access/Ownable.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/IERC20.sol\";\nimport \"@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol\";\nimport \"./MerkleProof.sol\";\n\ncontract LevxAirdrop is Ownable, MerkleProof {\n    using SafeERC20 for IERC20;\n\n    address public immutable levx;\n    mapping(bytes32 => bool) public isValidMerkleRoot;\n    mapping(bytes32 => mapping(bytes32 => bool)) internal _hasClaimed;\n\n    event AddMerkleRoot(bytes32 indexed merkleRoot);\n    event Claim(bytes32 indexed merkleRoot, address indexed account, uint256 amount);\n\n    constructor(address _owner, address _levx) {\n        levx = _levx;\n        _transferOwnership(_owner);\n    }\n\n    function addMerkleRoot(bytes32 merkleRoot) external onlyOwner {\n        require(!isValidMerkleRoot[merkleRoot], \"SHOYU: DUPLICATE_ROOT\");\n        isValidMerkleRoot[merkleRoot] = true;\n\n        emit AddMerkleRoot(merkleRoot);\n    }\n\n    function claim(\n        bytes32 merkleRoot,\n        bytes32[] calldata merkleProof,\n        uint256 amount\n    ) external {\n        require(isValidMerkleRoot[merkleRoot], \"SHOYU: INVALID_ROOT\");\n\n        bytes32 leaf = keccak256(abi.encodePacked(msg.sender, amount));\n        require(!_hasClaimed[merkleRoot][leaf], \"SHOYU: FORBIDDEN\");\n        require(verify(merkleRoot, leaf, merkleProof), \"SHOYU: INVALID_PROOF\");\n\n        _hasClaimed[merkleRoot][leaf] = true;\n        IERC20(levx).safeTransferFrom(owner(), msg.sender, amount);\n\n        emit Claim(merkleRoot, msg.sender, amount);\n    }\n}\n"
    },
    "contracts/uniswapv2/interfaces/IUniswapV2Router02.sol": {
      "content": "// SPDX-License-Identifier: GPL-3.0\n\npragma solidity >=0.6.2;\n\nimport './IUniswapV2Router01.sol';\n\ninterface IUniswapV2Router02 is IUniswapV2Router01 {\n    function removeLiquidityETHSupportingFeeOnTransferTokens(\n        address token,\n        uint liquidity,\n        uint amountTokenMin,\n        uint amountETHMin,\n        address to,\n        uint deadline\n    ) external returns (uint amountETH);\n    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(\n        address token,\n        uint liquidity,\n        uint amountTokenMin,\n        uint amountETHMin,\n        address to,\n        uint deadline,\n        bool approveMax, uint8 v, bytes32 r, bytes32 s\n    ) external returns (uint amountETH);\n\n    function swapExactTokensForTokensSupportingFeeOnTransferTokens(\n        uint amountIn,\n        uint amountOutMin,\n        address[] calldata path,\n        address to,\n        uint deadline\n    ) external;\n    function swapExactETHForTokensSupportingFeeOnTransferTokens(\n        uint amountOutMin,\n        address[] calldata path,\n        address to,\n        uint deadline\n    ) external payable;\n    function swapExactTokensForETHSupportingFeeOnTransferTokens(\n        uint amountIn,\n        uint amountOutMin,\n        address[] calldata path,\n        address to,\n        uint deadline\n    ) external;\n}"
    }
  },
  "settings": {
    "optimizer": {
      "enabled": true,
      "runs": 200
    },
    "outputSelection": {
      "*": {
        "*": [
          "abi",
          "evm.bytecode",
          "evm.deployedBytecode",
          "evm.methodIdentifiers",
          "metadata",
          "devdoc",
          "userdoc",
          "storageLayout",
          "evm.gasEstimates"
        ],
        "": [
          "ast"
        ]
      }
    },
    "metadata": {
      "useLiteralContent": true
    },
    "libraries": {
      "": {
        "__CACHE_BREAKER__": "0x00000000d41867734bbee4c6863d9255b2b06ac1"
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}