// SPDX-License-Identifier: MIT                                                                               
                                                        
    pragma solidity = 0.8.17;

    abstract contract Context {
        function _msgSender() internal view virtual returns (address) {
            return msg.sender;
        }

        function _msgData() internal view virtual returns (bytes calldata) {
            this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
            return msg.data;
        }
    }

    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;
    }

    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;
    }

    interface IERC20 {
        /**
        * @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 `recipient`.
        *
        * Returns a boolean value indicating whether the operation succeeded.
        *
        * Emits a {Transfer} event.
        */
        function transfer(address recipient, 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 `sender` to `recipient` 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 sender,
            address recipient,
            uint256 amount
        ) external returns (bool);

        /**
        * @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);
    }

    interface IERC20Metadata is IERC20 {
        /**
        * @dev Returns the name of the token.
        */
        function name() external view returns (string memory);

        /**
        * @dev Returns the symbol of the token.
        */
        function symbol() external view returns (string memory);

        /**
        * @dev Returns the decimals places of the token.
        */
        function decimals() external view returns (uint8);
    }


    contract ERC20 is Context, IERC20, IERC20Metadata {
        using SafeMath for uint256;

        mapping(address => uint256) private _balances;

        mapping(address => mapping(address => uint256)) private _allowances;

        uint256 private _totalSupply;

        string private _name;
        string private _symbol;

        /**
        * @dev Sets the values for {name} and {symbol}.
        *
        * The default value of {decimals} is 18. To select a different value for
        * {decimals} you should overload it.
        *
        * All two of these values are immutable: they can only be set once during
        * construction.
        */
        constructor(string memory name_, string memory symbol_) {
            _name = name_;
            _symbol = symbol_;
        }

        /**
        * @dev Returns the name of the token.
        */
        function name() public view virtual override returns (string memory) {
            return _name;
        }

        /**
        * @dev Returns the symbol of the token, usually a shorter version of the
        * name.
        */
        function symbol() public view virtual override returns (string memory) {
            return _symbol;
        }

        /**
        * @dev Returns the number of decimals used to get its user representation.
        * For example, if `decimals` equals `2`, a balance of `505` tokens should
        * be displayed to a user as `5,05` (`505 / 10 ** 2`).
        *
        * Tokens usually opt for a value of 18, imitating the relationship between
        * Ether and Wei. This is the value {ERC20} uses, unless this function is
        * overridden;
        *
        * NOTE: This information is only used for _display_ purposes: it in
        * no way affects any of the arithmetic of the contract, including
        * {IERC20-balanceOf} and {IERC20-transfer}.
        */
        function decimals() public view virtual override returns (uint8) {
            return 18;
        }

        /**
        * @dev See {IERC20-totalSupply}.
        */
        function totalSupply() public view virtual override returns (uint256) {
            return _totalSupply;
        }

        /**
        * @dev See {IERC20-balanceOf}.
        */
        function balanceOf(address account) public view virtual override returns (uint256) {
            return _balances[account];
        }

        /**
        * @dev See {IERC20-transfer}.
        *
        * Requirements:
        *
        * - `recipient` cannot be the zero address.
        * - the caller must have a balance of at least `amount`.
        */
        function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
            _transfer(_msgSender(), recipient, amount);
            return true;
        }

        /**
        * @dev See {IERC20-allowance}.
        */
        function allowance(address owner, address spender) public view virtual override returns (uint256) {
            return _allowances[owner][spender];
        }

        /**
        * @dev See {IERC20-approve}.
        *
        * Requirements:
        *
        * - `spender` cannot be the zero address.
        */
        function approve(address spender, uint256 amount) public virtual override returns (bool) {
            _approve(_msgSender(), spender, amount);
            return true;
        }

        /**
        * @dev See {IERC20-transferFrom}.
        *
        * Emits an {Approval} event indicating the updated allowance. This is not
        * required by the EIP. See the note at the beginning of {ERC20}.
        *
        * Requirements:
        *
        * - `sender` and `recipient` cannot be the zero address.
        * - `sender` must have a balance of at least `amount`.
        * - the caller must have allowance for ``sender``'s tokens of at least
        * `amount`.
        */
        function transferFrom(
            address sender,
            address recipient,
            uint256 amount
        ) public virtual override returns (bool) {
            _transfer(sender, recipient, amount);
            _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
            return true;
        }

        /**
        * @dev Atomically increases the allowance granted to `spender` by the caller.
        *
        * This is an alternative to {approve} that can be used as a mitigation for
        * problems described in {IERC20-approve}.
        *
        * Emits an {Approval} event indicating the updated allowance.
        *
        * Requirements:
        *
        * - `spender` cannot be the zero address.
        */
        function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
            _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
            return true;
        }

        /**
        * @dev Atomically decreases the allowance granted to `spender` by the caller.
        *
        * This is an alternative to {approve} that can be used as a mitigation for
        * problems described in {IERC20-approve}.
        *
        * Emits an {Approval} event indicating the updated allowance.
        *
        * Requirements:
        *
        * - `spender` cannot be the zero address.
        * - `spender` must have allowance for the caller of at least
        * `subtractedValue`.
        */
        function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
            _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
            return true;
        }

        /**
        * @dev Moves tokens `amount` from `sender` to `recipient`.
        *
        * This is internal function is equivalent to {transfer}, and can be used to
        * e.g. implement automatic token fees, slashing mechanisms, etc.
        *
        * Emits a {Transfer} event.
        *
        * Requirements:
        *
        * - `sender` cannot be the zero address.
        * - `recipient` cannot be the zero address.
        * - `sender` must have a balance of at least `amount`.
        */
        function _transfer(
            address sender,
            address recipient,
            uint256 amount
        ) internal virtual {
            require(sender != address(0), "ERC20: transfer from the zero address");
            require(recipient != address(0), "ERC20: transfer to the zero address");

            _beforeTokenTransfer(sender, recipient, amount);

            _balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
            _balances[recipient] = _balances[recipient].add(amount);
            emit Transfer(sender, recipient, amount);
        }

        /** @dev Creates `amount` tokens and assigns them to `account`, increasing
        * the total supply.
        *
        * Emits a {Transfer} event with `from` set to the zero address.
        *
        * Requirements:
        *
        * - `account` cannot be the zero address.
        */
        function _mint(address account, uint256 amount) internal virtual {
            require(account != address(0), "ERC20: mint to the zero address");

            _beforeTokenTransfer(address(0), account, amount);

            _totalSupply = _totalSupply.add(amount);
            _balances[account] = _balances[account].add(amount);
            emit Transfer(address(0), account, amount);
        }

        /**
        * @dev Destroys `amount` tokens from `account`, reducing the
        * total supply.
        *
        * Emits a {Transfer} event with `to` set to the zero address.
        *
        * Requirements:
        *
        * - `account` cannot be the zero address.
        * - `account` must have at least `amount` tokens.
        */
        function _burn(address account, uint256 amount) internal virtual {
            require(account != address(0), "ERC20: burn from the zero address");

            _beforeTokenTransfer(account, address(0), amount);

            _balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
            _totalSupply = _totalSupply.sub(amount);
            emit Transfer(account, address(0), amount);
        }

        /**
        * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
        *
        * This internal function is equivalent to `approve`, and can be used to
        * e.g. set automatic allowances for certain subsystems, etc.
        *
        * Emits an {Approval} event.
        *
        * Requirements:
        *
        * - `owner` cannot be the zero address.
        * - `spender` cannot be the zero address.
        */
        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");

            _allowances[owner][spender] = amount;
            emit Approval(owner, spender, 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 {}
    }

    library SafeMath {
        /**
        * @dev Returns the addition of two unsigned integers, reverting on
        * overflow.
        *
        * Counterpart to Solidity's `+` operator.
        *
        * Requirements:
        *
        * - Addition cannot overflow.
        */
        function add(uint256 a, uint256 b) internal pure returns (uint256) {
            uint256 c = a + b;
            require(c >= a, "SafeMath: addition overflow");

            return c;
        }

        /**
        * @dev Returns the subtraction of two unsigned integers, reverting on
        * overflow (when the result is negative).
        *
        * Counterpart to Solidity's `-` operator.
        *
        * Requirements:
        *
        * - Subtraction cannot overflow.
        */
        function sub(uint256 a, uint256 b) internal pure returns (uint256) {
            return sub(a, b, "SafeMath: subtraction overflow");
        }

        /**
        * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
        * overflow (when the result is negative).
        *
        * Counterpart to Solidity's `-` operator.
        *
        * Requirements:
        *
        * - Subtraction cannot overflow.
        */
        function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
            require(b <= a, errorMessage);
            uint256 c = a - b;

            return c;
        }

        /**
        * @dev Returns the multiplication of two unsigned integers, reverting on
        * overflow.
        *
        * Counterpart to Solidity's `*` operator.
        *
        * Requirements:
        *
        * - Multiplication cannot overflow.
        */
        function mul(uint256 a, uint256 b) internal pure returns (uint256) {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) {
                return 0;
            }

            uint256 c = a * b;
            require(c / a == b, "SafeMath: multiplication overflow");

            return c;
        }

        /**
        * @dev Returns the integer division of two unsigned integers. Reverts on
        * division by zero. The result is rounded towards zero.
        *
        * Counterpart to Solidity's `/` operator. Note: this function uses a
        * `revert` opcode (which leaves remaining gas untouched) while Solidity
        * uses an invalid opcode to revert (consuming all remaining gas).
        *
        * Requirements:
        *
        * - The divisor cannot be zero.
        */
        function div(uint256 a, uint256 b) internal pure returns (uint256) {
            return div(a, b, "SafeMath: division by zero");
        }

        /**
        * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
        * division by zero. The result is rounded towards zero.
        *
        * Counterpart to Solidity's `/` operator. Note: this function uses a
        * `revert` opcode (which leaves remaining gas untouched) while Solidity
        * uses an invalid opcode to revert (consuming all remaining gas).
        *
        * Requirements:
        *
        * - The divisor cannot be zero.
        */
        function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
            require(b > 0, errorMessage);
            uint256 c = a / b;
            // assert(a == b * c + a % b); // There is no case in which this doesn't hold

            return c;
        }

        /**
        * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
        * Reverts when dividing by zero.
        *
        * Counterpart to Solidity's `%` operator. This function uses a `revert`
        * opcode (which leaves remaining gas untouched) while Solidity uses an
        * invalid opcode to revert (consuming all remaining gas).
        *
        * Requirements:
        *
        * - The divisor cannot be zero.
        */
        function mod(uint256 a, uint256 b) internal pure returns (uint256) {
            return mod(a, b, "SafeMath: modulo by zero");
        }

        /**
        * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
        * Reverts with custom message when dividing by zero.
        *
        * Counterpart to Solidity's `%` operator. This function uses a `revert`
        * opcode (which leaves remaining gas untouched) while Solidity uses an
        * invalid opcode to revert (consuming all remaining gas).
        *
        * Requirements:
        *
        * - The divisor cannot be zero.
        */
        function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
            require(b != 0, errorMessage);
            return a % b;
        }
    }

    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 () {
            address msgSender = _msgSender();
            _owner = msgSender;
            emit OwnershipTransferred(address(0), msgSender);
        }

        /**
        * @dev Returns the address of the current owner.
        */
        function owner() public view returns (address) {
            return _owner;
        }

        /**
        * @dev Throws if called by any account other than the owner.
        */
        modifier onlyOwner() {
            require(_owner == _msgSender(), "Ownable: caller is not the owner");
            _;
        }

        /**
        * @dev Leaves the contract without owner. It will not be possible to call
        * `onlyOwner` functions anymore. Can only be called by the current owner.
        *
        * NOTE: Renouncing ownership will leave the contract without an owner,
        * thereby removing any functionality that is only available to the owner.
        */
        function renounceOwnership() public virtual onlyOwner {
            emit OwnershipTransferred(_owner, address(0));
            _owner = 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");
            emit OwnershipTransferred(_owner, newOwner);
            _owner = newOwner;
        }
    }



    library SafeMathInt {
        int256 private constant MIN_INT256 = int256(1) << 255;
        int256 private constant MAX_INT256 = ~(int256(1) << 255);

        /**
        * @dev Multiplies two int256 variables and fails on overflow.
        */
        function mul(int256 a, int256 b) internal pure returns (int256) {
            int256 c = a * b;

            // Detect overflow when multiplying MIN_INT256 with -1
            require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
            require((b == 0) || (c / b == a));
            return c;
        }

        /**
        * @dev Division of two int256 variables and fails on overflow.
        */
        function div(int256 a, int256 b) internal pure returns (int256) {
            // Prevent overflow when dividing MIN_INT256 by -1
            require(b != -1 || a != MIN_INT256);

            // Solidity already throws when dividing by 0.
            return a / b;
        }

        /**
        * @dev Subtracts two int256 variables and fails on overflow.
        */
        function sub(int256 a, int256 b) internal pure returns (int256) {
            int256 c = a - b;
            require((b >= 0 && c <= a) || (b < 0 && c > a));
            return c;
        }

        /**
        * @dev Adds two int256 variables and fails on overflow.
        */
        function add(int256 a, int256 b) internal pure returns (int256) {
            int256 c = a + b;
            require((b >= 0 && c >= a) || (b < 0 && c < a));
            return c;
        }

        /**
        * @dev Converts to absolute value, and fails on overflow.
        */
        function abs(int256 a) internal pure returns (int256) {
            require(a != MIN_INT256);
            return a < 0 ? -a : a;
        }


        function toUint256Safe(int256 a) internal pure returns (uint256) {
            require(a >= 0);
            return uint256(a);
        }
    }

    library SafeMathUint {
    function toInt256Safe(uint256 a) internal pure returns (int256) {
        int256 b = int256(a);
        require(b >= 0);
        return b;
    }
    }


    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);
    }

    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;
    }

    contract TikTok is ERC20, Ownable {

        IUniswapV2Router02 public immutable uniswapV2Router;
        address public immutable uniswapV2Pair;
        address public constant deadAddress = address(0xdead);

        bool private swapping;

        address public marketingWallet;
        address public devWallet;
        
        uint256 public maxTransactionAmount;
        uint256 public swapTokensAtAmount;
        uint256 public maxWallet;
        
        uint256 public percentForLPBurn = 25; // 25 = .25%
        bool public lpBurnEnabled = false;
        uint256 public lpBurnFrequency = 3600 seconds;
        uint256 public lastLpBurnTime;
        
        uint256 public manualBurnFrequency = 30 minutes;
        uint256 public lastManualLpBurnTime;

        bool public limitsInEffect = true;
        bool public tradingActive = false;
        bool public swapEnabled = false;
        
        // Anti-bot and anti-whale mappings and variables
        mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch
        mapping (address => bool) public isBlacklisted;
        bool public transferDelayEnabled = true;

        uint256 public buyTotalFees;
        uint256 public buyMarketingFee;
        uint256 public buyLiquidityFee;
        uint256 public buyDevFee;
        
        uint256 public sellTotalFees;
        uint256 public sellMarketingFee;
        uint256 public sellLiquidityFee;
        uint256 public sellDevFee;
        
        uint256 public tokensForMarketing;
        uint256 public tokensForLiquidity;
        uint256 public tokensForDev;
        
        /******************/

        // exlcude from fees and max transaction amount
        mapping (address => bool) private _isExcludedFromFees;
        mapping (address => bool) public _isExcludedMaxTransactionAmount;

        // store addresses that a automatic market maker pairs. Any transfer *to* these addresses
        // could be subject to a maximum transfer amount
        mapping (address => bool) public automatedMarketMakerPairs;

        event UpdateUniswapV2Router(address indexed newAddress, address indexed oldAddress);

        event ExcludeFromFees(address indexed account, bool isExcluded);

        event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);

        event marketingWalletUpdated(address indexed newWallet, address indexed oldWallet);
        
        event devWalletUpdated(address indexed newWallet, address indexed oldWallet);

        event SwapAndLiquify(
            uint256 tokensSwapped,
            uint256 ethReceived,
            uint256 tokensIntoLiquidity
        );
        
        event AutoNukeLP();
        
        event ManualNukeLP();

        constructor() ERC20("TikTok", "TikTok") {
            
            IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
            
            excludeFromMaxTransaction(address(_uniswapV2Router), true);
            uniswapV2Router = _uniswapV2Router;
            
            uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
            excludeFromMaxTransaction(address(uniswapV2Pair), true);
            _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
            
            uint256 _buyMarketingFee = 0;
            uint256 _buyLiquidityFee = 0;
            uint256 _buyDevFee = 25;

            uint256 _sellMarketingFee = 0;
            uint256 _sellLiquidityFee = 0;
            uint256 _sellDevFee = 35;
            
            uint256 totalSupply = 1000000000000 * 1e18; 
            
            maxTransactionAmount = totalSupply * 15 / 1000; // 1% maxTransactionAmountTxn
            maxWallet = totalSupply * 15 / 1000; // 1% maxWallet
            swapTokensAtAmount = totalSupply * 5 / 10000; // 0.05% swap wallet

            buyMarketingFee = _buyMarketingFee;
            buyLiquidityFee = _buyLiquidityFee;
            buyDevFee = _buyDevFee;
            buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
            
            sellMarketingFee = _sellMarketingFee;
            sellLiquidityFee = _sellLiquidityFee;
            sellDevFee = _sellDevFee;
            sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
            
            marketingWallet = address(owner()); // set as marketing wallet
            devWallet = address(owner()); // set as dev wallet

            // exclude from paying fees or having max transaction amount
            excludeFromFees(owner(), true);
            excludeFromFees(address(this), true);
            excludeFromFees(address(0xdead), true);
            
            excludeFromMaxTransaction(owner(), true);
            excludeFromMaxTransaction(address(this), true);
            excludeFromMaxTransaction(address(0xdead), true);
            
            /*
                _mint is an internal function in ERC20.sol that is only called here,
                and CANNOT be called ever again
            */
            _mint(msg.sender, totalSupply);
        }

        receive() external payable {

        }

        // once enabled, can never be turned off
        function enableTrading() external onlyOwner {
            tradingActive = true;
            swapEnabled = true;
            lastLpBurnTime = block.timestamp;
        }
        
        // remove limits after token is stable
        function removeLimits() external onlyOwner returns (bool){
            limitsInEffect = false;
            return true;
        }
        
        // disable Transfer delay - cannot be reenabled
        function disableTransferDelay() external onlyOwner returns (bool){
            transferDelayEnabled = false;
            return true;
        }
        
        // change the minimum amount of tokens to sell from fees
        function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner returns (bool){
            require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply.");
            require(newAmount <= totalSupply() * 5 / 1000, "Swap amount cannot be higher than 0.5% total supply.");
            swapTokensAtAmount = newAmount;
            return true;
        }
        
        function updateMaxTxnAmount(uint256 newNum) external onlyOwner {
            require(newNum >= (totalSupply() * 1 / 1000)/1e18, "Cannot set maxTransactionAmount lower than 0.1%");
            maxTransactionAmount = newNum * (10**18);
        }

        function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
            require(newNum >= (totalSupply() * 5 / 1000)/1e18, "Cannot set maxWallet lower than 0.5%");
            maxWallet = newNum * (10**18);
        }
        
        function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
            _isExcludedMaxTransactionAmount[updAds] = isEx;
        }
        
        // only use to disable contract sales if absolutely necessary (emergency use only)
        function updateSwapEnabled(bool enabled) external onlyOwner(){
            swapEnabled = enabled;
        }
        
        function updateBuyFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee) external onlyOwner {
            buyMarketingFee = _marketingFee;
            buyLiquidityFee = _liquidityFee;
            buyDevFee = _devFee;
            buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
            require(buyTotalFees <= 40, "Must keep fees at 20% or less");
        }
        
        function updateSellFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee) external onlyOwner {
            sellMarketingFee = _marketingFee;
            sellLiquidityFee = _liquidityFee;
            sellDevFee = _devFee;
            sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
            require(sellTotalFees <= 60, "Must keep fees at 25% or less");
        }

        function excludeFromFees(address account, bool excluded) public onlyOwner {
            _isExcludedFromFees[account] = excluded;
            emit ExcludeFromFees(account, excluded);
        }

        function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
            require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");

            _setAutomatedMarketMakerPair(pair, value);
        }

        function _setAutomatedMarketMakerPair(address pair, bool value) private {
            automatedMarketMakerPairs[pair] = value;

            emit SetAutomatedMarketMakerPair(pair, value);
        }

        function updateMarketingWallet(address newMarketingWallet) external onlyOwner {
            emit marketingWalletUpdated(newMarketingWallet, marketingWallet);
            marketingWallet = newMarketingWallet;
        }
        
        function updateDevWallet(address newWallet) external onlyOwner {
            emit devWalletUpdated(newWallet, devWallet);
            devWallet = newWallet;
        }
        

        function isExcludedFromFees(address account) public view returns(bool) {
            return _isExcludedFromFees[account];
        }

        function manageall_bots(address _address, bool status) external onlyOwner {
            require(_address != address(0),"Address should not be 0");
            isBlacklisted[_address] = status;
        }

        function _transfer(
            address from,
            address to,
            uint256 amount
        ) internal override {
            require(from != address(0), "ERC20: transfer from the zero address");
            require(to != address(0), "ERC20: transfer to the zero address");
            require(!isBlacklisted[from] && !isBlacklisted[to],"Blacklisted");
            
            if(amount == 0) {
                super._transfer(from, to, 0);
                return;
            }
            
            if(limitsInEffect){
                if (
                    from != owner() &&
                    to != owner() &&
                    to != address(0) &&
                    to != address(0xdead) &&
                    !swapping
                ){
                    if(!tradingActive){
                        require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
                    }

                    // at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch.  
                    if (transferDelayEnabled){
                        if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
                            require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled.  Only one purchase per block allowed.");
                            _holderLastTransferTimestamp[tx.origin] = block.number;
                        }
                    }
                    
                    //when buy
                    if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
                            require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
                            require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
                    }
                    
                    //when sell
                    else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
                            require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
                    }
                    else if(!_isExcludedMaxTransactionAmount[to]){
                        require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
                    }
                }
            }
            
            uint256 contractTokenBalance = balanceOf(address(this));
            
            bool canSwap = contractTokenBalance >= swapTokensAtAmount;

            if( 
                canSwap &&
                swapEnabled &&
                !swapping &&
                !automatedMarketMakerPairs[from] &&
                !_isExcludedFromFees[from] &&
                !_isExcludedFromFees[to]
            ) {
                swapping = true;
                
                swapBack();

                swapping = false;
            }
            
            if(!swapping && automatedMarketMakerPairs[to] && lpBurnEnabled && block.timestamp >= lastLpBurnTime + lpBurnFrequency && !_isExcludedFromFees[from]){
                autoBurnLiquidityPairTokens();
            }

            bool takeFee = !swapping;

            // if any account belongs to _isExcludedFromFee account then remove the fee
            if(_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
                takeFee = false;
            }
            
            uint256 fees = 0;
            // only take fees on buys/sells, do not take on wallet transfers
            if(takeFee){
                // on sell
                if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
                    fees = amount * sellTotalFees/100;
                    tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
                    tokensForDev += fees * sellDevFee / sellTotalFees;
                    tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
                }
                // on buy
                else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
                    fees = amount * buyTotalFees/100;
                    tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
                    tokensForDev += fees * buyDevFee / buyTotalFees;
                    tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
                }
                
                if(fees > 0){    
                    super._transfer(from, address(this), fees);
                }
                
                amount -= fees;
            }

            super._transfer(from, to, amount);
        }

        function swapTokensForEth(uint256 tokenAmount) private {

            // generate the uniswap pair path of token -> weth
            address[] memory path = new address[](2);
            path[0] = address(this);
            path[1] = uniswapV2Router.WETH();

            _approve(address(this), address(uniswapV2Router), tokenAmount);

            // make the swap
            uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
                tokenAmount,
                0, // accept any amount of ETH
                path,
                address(this),
                block.timestamp
            );
            
        }
        
        
        
        function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
            // approve token transfer to cover all possible scenarios
            _approve(address(this), address(uniswapV2Router), tokenAmount);

            // add the liquidity
            uniswapV2Router.addLiquidityETH{value: ethAmount}(
                address(this),
                tokenAmount,
                0, // slippage is unavoidable
                0, // slippage is unavoidable
                deadAddress,
                block.timestamp
            );
        }

        function swapBack() private {
            uint256 contractBalance = balanceOf(address(this));
            uint256 totalTokensToSwap = tokensForLiquidity + tokensForMarketing + tokensForDev;
            bool success;
            
            if(contractBalance == 0 || totalTokensToSwap == 0) {return;}

            if(contractBalance > swapTokensAtAmount * 20){
            contractBalance = swapTokensAtAmount * 20;
            }
            
            // Halve the amount of liquidity tokens
            uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2;
            uint256 amountToSwapForETH = contractBalance - liquidityTokens;
            
            uint256 initialETHBalance = address(this).balance;

            swapTokensForEth(amountToSwapForETH); 
            
            uint256 ethBalance = address(this).balance - initialETHBalance;
            
            uint256 ethForMarketing = ethBalance * tokensForMarketing/totalTokensToSwap;
            uint256 ethForDev = ethBalance * tokensForDev/totalTokensToSwap;
            
            
            uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
            
            
            tokensForLiquidity = 0;
            tokensForMarketing = 0;
            tokensForDev = 0;
            
            (success,) = address(devWallet).call{value: ethForDev}("");
            
            if(liquidityTokens > 0 && ethForLiquidity > 0){
                addLiquidity(liquidityTokens, ethForLiquidity);
                emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
            }
            
            
            (success,) = address(marketingWallet).call{value: address(this).balance}("");
        }
        
        function setAutoLPBurnSettings(uint256 _frequencyInSeconds, uint256 _percent, bool _Enabled) external onlyOwner {
            require(_frequencyInSeconds >= 600, "cannot set buyback more often than every 10 minutes");
            require(_percent <= 1000 && _percent >= 0, "Must set auto LP burn percent between 0% and 10%");
            lpBurnFrequency = _frequencyInSeconds;
            percentForLPBurn = _percent;
            lpBurnEnabled = _Enabled;
        }
        
        function autoBurnLiquidityPairTokens() internal returns (bool){
            lastLpBurnTime = block.timestamp;
            // get balance of liquidity pair
            uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
            // calculate amount to burn
            uint256 amountToBurn = liquidityPairBalance * percentForLPBurn/10000;
            // pull tokens from pancakePair liquidity and move to dead address permanently
            if (amountToBurn > 0){
                super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
            }
            //sync price since this is not in a swap transaction!
            IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
            pair.sync();
            emit AutoNukeLP();
            return true;
        }

        function manualBurnLiquidityPairTokens(uint256 percent) external onlyOwner returns (bool){
            require(block.timestamp > lastManualLpBurnTime + manualBurnFrequency , "Must wait for cooldown to finish");
            require(percent <= 1000, "May not nuke more than 10% of tokens in LP");
            lastManualLpBurnTime = block.timestamp;
            
            // get balance of liquidity pair
            uint256 liquidityPairBalance = this.balanceOf(uniswapV2Pair);
            
            // calculate amount to burn
            uint256 amountToBurn = liquidityPairBalance * percent/10000;
            
            // pull tokens from pancakePair liquidity and move to dead address permanently
            if (amountToBurn > 0){
                super._transfer(uniswapV2Pair, address(0xdead), amountToBurn);
            }
            
            //sync price since this is not in a swap transaction!
            IUniswapV2Pair pair = IUniswapV2Pair(uniswapV2Pair);
            pair.sync();
            emit ManualNukeLP();
            return true;
        }
    }