// File: Address.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @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://consensys.net/diligence/blog/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/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @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 functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @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 functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @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 functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// File: Asakusa.sol



// SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

import "./Context.sol";
import "./Address.sol";
import "./Ownable.sol";
import "./IERC20.sol";

import "./IUniswapV2Factory.sol";
import "./IUniswapV2Pair.sol";
import "./IUniswapV2Router01.sol";
import "./IUniswapV2Router02.sol";


/*
 * @author ~ 🅧🅘🅟🅩🅔🅡 ~ (https://twitter.com/Xipzer | https://t.me/Xipzer)
 *
 * ░█████╗░░██████╗░█████╗░██╗░░██╗██╗░░░██╗░██████╗░█████╗░
 * ██╔══██╗██╔════╝██╔══██╗██║░██╔╝██║░░░██║██╔════╝██╔══██╗
 * ███████║╚█████╗░███████║█████═╝░██║░░░██║╚█████╗░███████║
 * ██╔══██║░╚═══██╗██╔══██║██╔═██╗░██║░░░██║░╚═══██╗██╔══██║
 * ██║░░██║██████╔╝██║░░██║██║░╚██╗╚██████╔╝██████╔╝██║░░██║
 * ╚═╝░░╚═╝╚═════╝░╚═╝░░╚═╝╚═╝░░╚═╝░╚═════╝░╚═════╝░╚═╝░░╚═╝
 *
 */

contract Asakusa is Context, IERC20, Ownable
{
    using Address for address;

    string public name = "Asakusa";
    string public symbol = "ASAKUSA";

    uint public decimals = 18;
    uint public totalSupply = 1000000000 * 10 ** decimals;

    uint private maxTXN = (totalSupply * 15) / 1000;
    uint private maxWallet = (totalSupply * 15) / 1000;
    uint public swapThresholdMin = totalSupply / 5000;
    uint public swapThresholdMax = totalSupply / 1000;

    address public dexPair;
    IUniswapV2Router02 public dexRouter;

    address public constant DEAD = 0x000000000000000000000000000000000000dEaD;

    mapping (address => uint) private balances;
    mapping (address => mapping (address => uint)) private allowances;

    mapping (address => bool) private isCaughtMEV;
    mapping (address => bool) private isFeeExempt;
    mapping (address => bool) private isTxnLimitExempt;
    mapping (address => bool) private isWalletLimitExempt;
    mapping (address => bool) public isMarketPair;

    struct Fees
    {
        uint inFee;
        uint outFee;
        uint transferFee;
    }

    struct FeeSplit
    {
        uint marketing;
        uint development;
    }

    struct FeeReceivers
    {
        address payable marketing;
        address payable development;
    }

    Fees public fees;
    FeeSplit public feeSplit;
    FeeReceivers public feeReceivers;

    bool public tradingEnabled;
    bool public protectionRenounced;
    bool public inSwapAndLiquify;
    bool public swapAndLiquifyEnabled;
    bool public swapAndLiquifyByLimitOnly;

    event SwapAndLiquifyStatusUpdated(bool status);
    event SwapAndLiquifyByLimitStatusUpdated(bool status);
    event SwapTokensForETH(uint amountIn, address[] path);

    modifier lockTheSwap
    {
        inSwapAndLiquify = true;
        _;
        inSwapAndLiquify = false;
    }

    constructor(address marketing, address development)
    {
        dexRouter = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        dexPair = IUniswapV2Factory(dexRouter.factory()).createPair(address(this), dexRouter.WETH());

        allowances[address(this)][address(dexRouter)] = type(uint).max;

        fees.inFee = 2000;
        fees.outFee = 4000;
        fees.transferFee = 4000;

        feeReceivers.marketing = payable(marketing);
        feeReceivers.development = payable(development);

        feeSplit.marketing = 6000;
        feeSplit.development = 4000;

        isFeeExempt[owner()] = true;
        isFeeExempt[address(0)] = true;
        isFeeExempt[DEAD] = true;
        isFeeExempt[address(this)] = true;
        isFeeExempt[feeReceivers.marketing] = true;
        isFeeExempt[feeReceivers.development] = true;

        isTxnLimitExempt[owner()] = true;
        isTxnLimitExempt[address(0)] = true;
        isTxnLimitExempt[DEAD] = true;
        isTxnLimitExempt[address(this)] = true;
        isTxnLimitExempt[feeReceivers.marketing] = true;
        isTxnLimitExempt[feeReceivers.development] = true;

        isWalletLimitExempt[owner()] = true;
        isWalletLimitExempt[address(0)] = true;
        isWalletLimitExempt[DEAD] = true;
        isWalletLimitExempt[address(this)] = true;
        isWalletLimitExempt[feeReceivers.marketing] = true;
        isWalletLimitExempt[feeReceivers.development] = true;

        isWalletLimitExempt[address(dexPair)] = true;
        isMarketPair[address(dexPair)] = true;

        swapAndLiquifyEnabled = true;
        swapAndLiquifyByLimitOnly = true;

        balances[_msgSender()] = totalSupply;
        emit Transfer(address(0), _msgSender(), totalSupply);
    }

    function balanceOf(address wallet) public view override returns (uint)
    {
        return balances[wallet];
    }

    function allowance(address owner, address spender) public view override returns (uint)
    {
        return allowances[owner][spender];
    }

    function getCirculatingSupply() public view returns (uint)
    {
        return totalSupply - balanceOf(address(0)) - balanceOf(DEAD);
    }

    function getMEVStatus(address wallet) public view returns (bool)
    {
        return isCaughtMEV[wallet];
    }

    function setWalletFeeStatus(address wallet, bool status) public onlyOwner()
    {
        isFeeExempt[wallet] = status;
    }

    function setWalletTxnStatus(address wallet, bool status) public onlyOwner()
    {
        isTxnLimitExempt[wallet] = status;
    }

    function setWalletLimitStatus(address wallet, bool status) public onlyOwner()
    {
        isWalletLimitExempt[wallet] = status;
    }

    function setMarketPairStatus(address wallet, bool status) public onlyOwner()
    {
        isMarketPair[wallet] = status;
    }

    function setMaxTXN(uint value) public onlyOwner()
    {
        require(value >= totalSupply / 10000, "ERROR: Minimum txn must be greater than 0.01% of total supply!");

        maxTXN = value;
    }

    function setMaxWallet(uint value) public onlyOwner()
    {
        require(value >= totalSupply / 10000, "ERROR: Minimum wallet size must be greater than 0.01% of total supply!");

        maxWallet = value;
    }

    function enableTrading() public onlyOwner()
    {
        require(!tradingEnabled, "ERROR: Trading is already enabled!");
        tradingEnabled = true;
    }

    function removeMaxTXN() public onlyOwner()
    {
        maxTXN = totalSupply;
    }

    function removeMaxWallet() public onlyOwner()
    {
        maxWallet = totalSupply;
    }

    function renounceMEVProtection() public onlyOwner()
    {
        require(!protectionRenounced, "ERROR: Anti-MEV system is already renounced!");
        protectionRenounced = true;
    }

    function setCaughtMEV(address[] memory wallets, bool status) public onlyOwner()
    {
        require(!protectionRenounced, "ERROR: Anti-MEV system is permanently disabled!");
        require(wallets.length <= 200, "ERROR: Maximum wallets at once is 200!");

        for (uint i = 0; i < wallets.length; i++)
            isCaughtMEV[wallets[i]] = status;
    }

    function setFees(uint inFee, uint outFee, uint transferFee) public onlyOwner()
    {
        require(inFee <= 5000 && outFee <= 5000 && transferFee <= 5000, "ERROR: Maximum directional fee is 50%!");

        fees.inFee = inFee;
        fees.outFee = outFee;
        fees.transferFee = transferFee;
    }

    function setFeeSplit(uint marketing, uint development) public onlyOwner()
    {
        require(marketing <= 10000 && development <= 10000, "ERROR: Fee split must not exceed 100%!");
        require(marketing + development <= 10000, "ERROR: Combined fee must not exceed 100%!");

        feeSplit.marketing = marketing;
        feeSplit.development = development;
    }

    function setFeeReceivers(address marketing, address development) public onlyOwner()
    {
        require(marketing != address(0) && development != address(0), "ERROR: Fee receiver must not be NULL address!");

        isFeeExempt[feeReceivers.marketing] = false;
        isFeeExempt[feeReceivers.development] = false;

        feeReceivers.marketing = payable(marketing);
        feeReceivers.development = payable(development);

        isFeeExempt[feeReceivers.marketing] = true;
        isFeeExempt[feeReceivers.development] = true;
    }

    function setSwapThresholds(uint swapMin, uint swapMax) public onlyOwner()
    {
        swapThresholdMin = swapMin;
        swapThresholdMax = swapMax;
    }

    function setSwapAndLiquifyStatus(bool status) public onlyOwner()
    {
        swapAndLiquifyEnabled = status;
        emit SwapAndLiquifyStatusUpdated(status);
    }

    function setSwapAndLiquifyByLimitStatus(bool status) public onlyOwner()
    {
        swapAndLiquifyByLimitOnly = status;
        emit SwapAndLiquifyByLimitStatusUpdated(status);
    }

    function approve(address spender, uint amount) public override returns (bool)
    {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function _approve(address owner, address spender, uint amount) private
    {
        require(owner != address(0), "ERROR: Approve from the zero address!");
        require(spender != address(0), "ERROR: Approve to the zero address!");

        allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function transfer(address recipient, uint amount) public override returns (bool)
    {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint amount) public override returns (bool)
    {
        if (allowances[sender][_msgSender()] != type(uint256).max)
            allowances[sender][_msgSender()] -= amount;

        return _transfer(sender, recipient, amount);
    }

    function transferToAddressNative(address payable recipient, uint amount) private
    {
        require(recipient != address(0), "SolarGuard: Cannot send to the 0 address!");

        recipient.call{ value: amount }("");
    }

    function _transfer(address sender, address recipient, uint amount) private returns (bool)
    {
        require(sender != address(0), "ERROR: Transfer from the zero address!");
        require(recipient != address(0), "ERROR: Transfer to the zero address!");
        require(!isCaughtMEV[recipient] && !isCaughtMEV[sender], "ERROR: Transfers are not permitted!");

        if (inSwapAndLiquify)
        {
            unchecked
            {
                require(amount <= balances[sender], "ERROR: Insufficient balance!");
                balances[sender] -= amount;
            }

            balances[recipient] += amount;

            emit Transfer(sender, recipient, amount);
            return true;
        }
        else
        {
            if (!isFeeExempt[sender] && !isFeeExempt[recipient])
                require(tradingEnabled, "ERROR: Trading has not yet been enabled!");

            if (!isTxnLimitExempt[sender] && !isTxnLimitExempt[recipient])
                require(amount <= maxTXN, "ERROR: Transfer amount exceeds the maxTXN!");

            uint contractTokenBalance = balanceOf(address(this));
            if (!inSwapAndLiquify && swapAndLiquifyEnabled && !isMarketPair[sender] && contractTokenBalance >= swapThresholdMin)
            {
                if (swapAndLiquifyByLimitOnly)
                    contractTokenBalance = min(amount, min(contractTokenBalance, swapThresholdMax));

                swapAndLiquify(contractTokenBalance);
            }

            unchecked
            {
                require(amount <= balances[sender], "ERROR: Insufficient balance!");
                balances[sender] -= amount;
            }

            uint finalAmount = (isFeeExempt[sender] || isFeeExempt[recipient]) ? amount : takeFee(sender, recipient, amount);

            if (!isWalletLimitExempt[recipient])
                require(balanceOf(recipient) + finalAmount <= maxWallet, "ERROR: Transfer amount must not exceed max wallet conditions!");

            balances[recipient] += finalAmount;

            emit Transfer(sender, recipient, finalAmount);
            return true;
        }
    }

    function swapAndLiquify(uint amount) private lockTheSwap
    {
        swapTokensForETH(amount);
        uint amountReceived = address(this).balance;

        uint marketingAmount = (amountReceived * feeSplit.marketing) / 10000;
        uint developmentAmount = (amountReceived * feeSplit.development) / 10000;

        if (marketingAmount > 0)
            transferToAddressNative(feeReceivers.marketing, marketingAmount);
        if (developmentAmount > 0)
            transferToAddressNative(feeReceivers.development, developmentAmount);
    }

    function swapTokensForETH(uint amount) private
    {
        address[] memory path = new address[](2);
        path[0] = address(this);
        path[1] = dexRouter.WETH();

        try dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amount, 0, path, address(this), block.timestamp)
        {
            emit SwapTokensForETH(amount, path);
        }
        catch
        {
            return;
        }
    }

    function takeFee(address sender, address recipient, uint amount) internal returns (uint)
    {
        uint feeAmount = 0;

        if (isMarketPair[sender])
            feeAmount = (amount * fees.inFee) / 10000;
        else if (isMarketPair[recipient])
            feeAmount = (amount * fees.outFee) / 10000;
        else
            feeAmount = (amount * fees.transferFee) / 10000;

        if (feeAmount > 0)
        {
            balances[address(this)] += feeAmount;
            emit Transfer(sender, address(this), feeAmount);
        }

        return amount - feeAmount;
    }

    function withdrawStuckNative(address recipient, uint amount) public onlyOwner()
    {
        require(recipient != address(0), "ERROR: Cannot send to the 0 address!");
        payable(recipient).transfer(amount);
    }

    function withdrawForeignToken(address tokenAddress, address recipient, uint amount) public onlyOwner()
    {
        require(recipient != address(0), "ERROR: Cannot send to the 0 address!");
        IERC20(tokenAddress).transfer(recipient, amount);
    }

    function min(uint a, uint b) private pure returns (uint)
    {
        return (a >= b) ? b : a;
    }

    receive() external payable {}
}
// File: Context.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @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.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

// File: IERC20.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @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);

    /**
     * @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 `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, 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.
     *
     * IMPORTANT: 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 `from` to `to` 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 from, address to, uint256 amount) external returns (bool);
}

// File: IUniswapV2Factory.sol



pragma solidity >=0.5.0;

interface IUniswapV2Factory {
    event PairCreated(address indexed token0, address indexed token1, address pair, uint);

    function feeTo() external view returns (address);
    function feeToSetter() external view returns (address);

    function getPair(address tokenA, address tokenB) external view returns (address pair);
    function allPairs(uint) external view returns (address pair);
    function allPairsLength() external view returns (uint);

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

    function setFeeTo(address) external;
    function setFeeToSetter(address) external;
}

// File: IUniswapV2Pair.sol



pragma solidity >=0.5.0;

interface IUniswapV2Pair {
    event Approval(address indexed owner, address indexed spender, uint value);
    event Transfer(address indexed from, address indexed to, uint value);

    function name() external pure returns (string memory);
    function symbol() external pure returns (string memory);
    function decimals() external pure returns (uint8);
    function totalSupply() external view returns (uint);
    function balanceOf(address owner) external view returns (uint);
    function allowance(address owner, address spender) external view returns (uint);

    function approve(address spender, uint value) external returns (bool);
    function transfer(address to, uint value) external returns (bool);
    function transferFrom(address from, address to, uint value) external returns (bool);

    function DOMAIN_SEPARATOR() external view returns (bytes32);
    function PERMIT_TYPEHASH() external pure returns (bytes32);
    function nonces(address owner) external view returns (uint);

    function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;

    event Mint(address indexed sender, uint amount0, uint amount1);
    event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
    event Swap(
        address indexed sender,
        uint amount0In,
        uint amount1In,
        uint amount0Out,
        uint amount1Out,
        address indexed to
    );
    event Sync(uint112 reserve0, uint112 reserve1);

    function MINIMUM_LIQUIDITY() external pure returns (uint);
    function factory() external view returns (address);
    function token0() external view returns (address);
    function token1() external view returns (address);
    function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
    function price0CumulativeLast() external view returns (uint);
    function price1CumulativeLast() external view returns (uint);
    function kLast() external view returns (uint);

    function mint(address to) external returns (uint liquidity);
    function burn(address to) external returns (uint amount0, uint amount1);
    function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
    function skim(address to) external;
    function sync() external;

    function initialize(address, address) external;
}

// File: IUniswapV2Router01.sol



pragma solidity >=0.6.2;

interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}

// File: IUniswapV2Router02.sol



pragma solidity >=0.6.2;

import './IUniswapV2Router01.sol';

interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}

// File: Ownable.sol



// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "./Context.sol";

/**
 * @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.
 */
abstract contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}