// SPDX-License-Identifier: MIT

/**
BIAOQING PANDA

At BIAOQING PANDA, we are pioneering the future of cryptocurrency with a 
twist that embodies the vibrant culture of Chinese internet memes. 
We take pride in blending the dynamic world of digital currencies with 
the playful and expressive art of Chinese Panda Reaction Images, or Biaoqing.💲

Tokenomics:
1,000,000,000 $PANDA Total Supply
0% Tax
100% LP Lock and CA Renounce

Socials:
TG: https://t.me/BiaoqingPanda_Base
Twitter/X: https://x.com/BIAOQING_PANDA
Website: https://biaoqingpanda.fun/
*/


pragma solidity 0.8.17;
pragma experimental ABIEncoderV2;

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

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


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);
    }
}


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);

    function approve(address spender, uint256 amount) external returns (bool);


    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) external returns (bool);
}

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 {
    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}.
     *
     * 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;
    }


    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:
     *
     * - `to` cannot be the zero address.
     * - the caller must have a balance of at least `amount`.
     */
    function transfer(address to, uint256 amount)
        public
        virtual
        override
        returns (bool)
    {
        address owner = _msgSender();
        _transfer(owner, to, amount);
        return true;
    }

    /**
     * @dev See {IERC20-allowance}.
     */
    function allowance(address owner, address spender)
        public
        view
        virtual
        override
        returns (uint256)
    {
        return _allowances[owner][spender];
    }

    function approve(address spender, uint256 amount)
        public
        virtual
        override
        returns (bool)
    {
        address owner = _msgSender();
        _approve(owner, spender, amount);
        return true;
    }


    function transferFrom(
        address from,
        address to,
        uint256 amount
    ) public virtual override returns (bool) {
        address spender = _msgSender();
        _spendAllowance(from, spender, amount);
        _transfer(from, to, amount);
        return true;
    }


    function increaseAllowance(address spender, uint256 addedValue)
        public
        virtual
        returns (bool)
    {
        address owner = _msgSender();
        _approve(owner, spender, allowance(owner, spender) + addedValue);
        return true;
    }


    function decreaseAllowance(address spender, uint256 subtractedValue)
        public
        virtual
        returns (bool)
    {
        address owner = _msgSender();
        uint256 currentAllowance = allowance(owner, spender);
        require(
            currentAllowance >= subtractedValue,
            "ERC20: decreased allowance below zero"
        );
        unchecked {
            _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");

        _beforeTokenTransfer(from, to, amount);

        uint256 fromBalance = _balances[from];
        require(
            fromBalance >= amount,
            "ERC20: transfer amount exceeds balance"
        );
        unchecked {
            _balances[from] = fromBalance - amount;
            // Overflow not possible: the sum of all balances is capped by totalSupply, and the sum is preserved by
            // decrementing then incrementing.
            _balances[to] += amount;
        }

        emit Transfer(from, to, amount);

        _afterTokenTransfer(from, to, amount);
    }


    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");

        _beforeTokenTransfer(address(0), account, amount);

        _totalSupply += amount;
        unchecked {
            // Overflow not possible: balance + amount is at most totalSupply + amount, which is checked above.
            _balances[account] += amount;
        }
        emit Transfer(address(0), account, amount);

        _afterTokenTransfer(address(0), account, amount);
    }


    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");

        _beforeTokenTransfer(account, address(0), amount);

        uint256 accountBalance = _balances[account];
        require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
        unchecked {
            _balances[account] = accountBalance - amount;
            // Overflow not possible: amount <= accountBalance <= totalSupply.
            _totalSupply -= amount;
        }

        emit Transfer(account, address(0), amount);

        _afterTokenTransfer(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 Updates `owner` s allowance for `spender` based on spent `amount`.
     *
     * Does not update the allowance amount in case of infinite allowance.
     * Revert if not enough allowance is available.
     *
     * Might emit an {Approval} event.
     */
    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"
            );
            unchecked {
                _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 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 {}

    function _afterTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}


library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryAdd(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            uint256 c = a + b;
            if (c < a) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function trySub(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            if (b > a) return (false, 0);
            return (true, a - b);
        }
    }

    /**
     * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
     *
     * _Available since v3.4._
     */
    function tryMul(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            // 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 (true, 0);
            uint256 c = a * b;
            if (c / a != b) return (false, 0);
            return (true, c);
        }
    }

    /**
     * @dev Returns the division of two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryDiv(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a / b);
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
     *
     * _Available since v3.4._
     */
    function tryMod(uint256 a, uint256 b)
        internal
        pure
        returns (bool, uint256)
    {
        unchecked {
            if (b == 0) return (false, 0);
            return (true, a % b);
        }
    }

    /**
     * @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) {
        return a + b;
    }

    /**
     * @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 a - b;
    }

    /**
     * @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) {
        return a * b;
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting on
     * division by zero. The result is rounded towards zero.
     *
     * Counterpart to Solidity's `/` operator.
     *
     * Requirements:
     *
     * - The divisor cannot be zero.
     */
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return a / b;
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting 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 a % b;
    }

    /**
     * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
     * overflow (when the result is negative).
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {trySub}.
     *
     * Counterpart to Solidity's `-` operator.
     *
     * Requirements:
     *
     * - Subtraction cannot overflow.
     */
    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        unchecked {
            require(b <= a, errorMessage);
            return a - b;
        }
    }

    /**
     * @dev Returns the integer division of two unsigned integers, reverting 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) {
        unchecked {
            require(b > 0, errorMessage);
            return a / b;
        }
    }

    /**
     * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
     * reverting with custom message when dividing by zero.
     *
     * CAUTION: This function is deprecated because it requires allocating memory for the error
     * message unnecessarily. For custom revert reasons use {tryMod}.
     *
     * 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) {
        unchecked {
            require(b > 0, errorMessage);
            return a % b;
        }
    }
}



interface IUniswapV2Factory {
    function createPair(address tokenA, address tokenB) external returns (address pair);
}

interface IUniswapV2Router02 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidityETH(
        address token,
        uint256 amountTokenDesired,
        uint256 amountTokenMin,
        uint256 amountETHMin,
        address to,
        uint256 deadline
    ) external payable returns (
        uint256 amountToken,
        uint256 amountETH,
        uint256 liquidity
    );
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint256 amountIn,
        uint256 amountOutMin,
        address[] calldata path,
        address to,
        uint256 deadline
    ) external;
}

contract BIAOQINGPANDA is ERC20, Ownable {
    using SafeMath for uint256;

    IUniswapV2Router02 public uniswapV2Router;
    address public uniswapV2Pair;
    address public marketingWallet;
    address public burnWallet;
    address public liquidityWallet;
    address public constant deadAddress = address(0xdead);

    bool public tradingActive;
    bool public swapEnabled;
    bool private _swapping;

    uint256 public maxTransaction;
    uint256 public maxWallet;
    uint256 public swapTokensAtAmount;

    uint256 public buyTotalFees;
    uint256 private _buyMarketingFee;
    uint256 private _buyBurnFee;
    uint256 private _buyLiquidityFee;

    uint256 public sellTotalFees;
    uint256 private _sellMarketingFee;
    uint256 private _sellBurnFee;
    uint256 private _sellLiquidityFee;

    uint256 private _tokensForMarketing;
    uint256 private _tokensForBurn;
    uint256 private _tokensForLiquidity;
    uint256 private _previousFee;

    mapping(address => bool) private _isExcludedFromFees;
    mapping(address => bool) private _isExcludedFromMaxTransaction;
    mapping(address => bool) private _automatedMarketMakerPairs;
    
    mapping(address => bool) public _isBlacklisted;

      
    
    address baseRouter = 0x4752ba5DBc23f44D87826276BF6Fd6b1C372aD24;


    event ExcludeFromLimits(address indexed account, bool isExcluded);

    event ExcludeFromFees(address indexed account, bool isExcluded);

   

    event BlackListed(address indexed account, bool isExcluded);

    event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);

    event marketingWalletUpdated(
        address indexed newWallet,
        address indexed oldWallet
    );

    event burnWalletUpdated(
        address indexed newWallet,
        address indexed oldWallet
    );

    event liquidityWalletUpdated(
        address indexed newWallet,
        address indexed oldWallet
    );

    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiquidity
    );

    constructor() ERC20("BIAOQING PANDA", "PANDA") {
        uint256 totalSupply = 1_000_000_000 ether;

        marketingWallet = 0xF707Dcb9Dbc9E4C060181DC7FEb2085683B80137;
        burnWallet = 0xF707Dcb9Dbc9E4C060181DC7FEb2085683B80137;
        liquidityWallet = 0xF707Dcb9Dbc9E4C060181DC7FEb2085683B80137;
        
        uniswapV2Router = IUniswapV2Router02(baseRouter);
        _approve(address(this), address(uniswapV2Router), type(uint256).max);

        maxTransaction = 20000000000000000000000000;
        maxWallet = 20000000000000000000000000;
        swapTokensAtAmount = 1000000000000000000000000;

        _buyMarketingFee = 2000;
        _buyBurnFee = 0;
        _buyLiquidityFee = 0; // leave 0
        
        buyTotalFees = 
            _buyMarketingFee + 
            _buyBurnFee + 
            _buyLiquidityFee;

        _sellMarketingFee = 3000;
        _sellBurnFee = 0;
        _sellLiquidityFee = 0;  // leave 0
        
        sellTotalFees =
            _sellMarketingFee +
            _sellBurnFee +
            _sellLiquidityFee;

        _previousFee = sellTotalFees;

        excludeFromFees(owner(), true);
        excludeFromFees(address(this), true);
        excludeFromFees(deadAddress, true);
        
        excludeFromFees(marketingWallet, true);
        excludeFromFees(burnWallet, true);
        excludeFromFees(liquidityWallet, true);

        excludeFromMaxTransaction(owner(), true);
        excludeFromMaxTransaction(address(this), true);
        excludeFromMaxTransaction(deadAddress, true);
        excludeFromMaxTransaction(address(uniswapV2Router), true);
        excludeFromMaxTransaction(address(baseRouter), true);
        
        excludeFromMaxTransaction(marketingWallet, true);
        excludeFromMaxTransaction(burnWallet, true);
        excludeFromMaxTransaction(liquidityWallet, true);

        
        _mint(owner(), totalSupply);
    }

    receive() external payable {}

    function burn(uint256 amount) public {
        _burn(msg.sender, amount);
    }


    function SetPair(address _pair) public onlyOwner {
        uniswapV2Pair = _pair;
        _setAutomatedMarketMakerPair(address(_pair), true);
        excludeFromMaxTransaction(address(_pair), true);
        _approve(address(this), address(_pair), type(uint256).max);
    
    }


    function setRouter(address router) public onlyOwner {
        baseRouter = router; 
        uniswapV2Router = IUniswapV2Router02(baseRouter);
        _approve(address(this), address(uniswapV2Router), type(uint256).max);
        excludeFromMaxTransaction(address(router), true);
    }

    function launch() public onlyOwner {
        require(!tradingActive, "Trading already active.");
        tradingActive = true;
        swapEnabled = true;
  
    }

    function setSwapEnabled(bool value) public onlyOwner {
        swapEnabled = value;
    }

    function setSwapTokensAtAmount(uint256 amount) public onlyOwner {

        swapTokensAtAmount = amount;
    }

    function setMaxWalletAndMaxTransaction(
        uint256 _maxTransaction,
        uint256 _maxWallet
    ) public onlyOwner {
       
        maxTransaction = _maxTransaction;
        maxWallet = _maxWallet;
    }

    function setBuyFees(
        uint256 _marketingFee,
        uint256 _burnFee,
        uint256 _liquidityFee
    ) public onlyOwner {
        require(
            _marketingFee + _burnFee + _liquidityFee <= 5000,
            "ERC20: Must keep fees at 50% or less"
        );
        _buyMarketingFee = _marketingFee;
        _buyBurnFee = _burnFee;
        _buyLiquidityFee = _liquidityFee;
        buyTotalFees = _buyMarketingFee + _buyBurnFee + _buyLiquidityFee;
    }

    function setSellFees(
        uint256 _marketingFee,
        uint256 _burnFee,
        uint256 _liquidityFee
    ) public onlyOwner {
        require(
            _marketingFee + _burnFee + _liquidityFee <= 5000,
            "ERC20: Must keep fees at 50% or less"
        );
        _sellMarketingFee = _marketingFee;
        _sellBurnFee = _burnFee;
        _sellLiquidityFee = _liquidityFee;
        sellTotalFees =
            _sellMarketingFee +
            _sellBurnFee +
            _sellLiquidityFee;
        _previousFee = sellTotalFees;
    }

    function setMarketingWallet(address _marketingWallet) public onlyOwner {
        require(_marketingWallet != address(0), "ERC20: Address 0");
        address oldWallet = marketingWallet;
        marketingWallet = _marketingWallet;
        emit marketingWalletUpdated(marketingWallet, oldWallet);
    }

    function setBurnWallet(address _burnWallet) public onlyOwner {
        require(_burnWallet != address(0), "ERC20: Address 0");
        address oldWallet = burnWallet;
        burnWallet = _burnWallet;
        emit burnWalletUpdated(burnWallet, oldWallet);
    }

    function setLiquidityWallet(address _liquidityWallet) public onlyOwner {
        require(_liquidityWallet != address(0), "ERC20: Address 0");
        address oldWallet = liquidityWallet;
        liquidityWallet = _liquidityWallet;
        emit liquidityWalletUpdated(liquidityWallet, oldWallet);
    }

    function excludeFromMaxTransaction(address account, bool value)
        public
        onlyOwner
    {
        _isExcludedFromMaxTransaction[account] = value;
        emit ExcludeFromLimits(account, value);
    }


    function bulkExcludeFromMaxTransaction(
        address[] calldata accounts,
        bool value
    ) public onlyOwner {
        for (uint256 i = 0; i < accounts.length; i++) {
            _isExcludedFromMaxTransaction[accounts[i]] = value;
            emit ExcludeFromLimits(accounts[i], value);
        }
    }

    function excludeFromFees(address account, bool value) public onlyOwner {
        _isExcludedFromFees[account] = value;
        emit ExcludeFromFees(account, value);
    }

    function bulkExcludeFromFees(address[] calldata accounts, bool value)
        public
        onlyOwner
    {
        for (uint256 i = 0; i < accounts.length; i++) {
            _isExcludedFromFees[accounts[i]] = value;
            emit ExcludeFromFees(accounts[i], value);
        }
    }


    function setBlackListed(address account, bool value)
        public
        onlyOwner
    {
        _isBlacklisted[account] = value;
        emit BlackListed(account, value);
    }

    function bulkSetBlackListed(
        address[] calldata accounts,
        bool value
    ) public onlyOwner {
        for (uint256 i = 0; i < accounts.length; i++) {
            _isBlacklisted[accounts[i]] = value;
            emit BlackListed(accounts[i], value);
        }
    }

    function withdrawStuckTokens(address tkn) public onlyOwner {
        bool success;
        if (tkn == address(0))
            (success, ) = address(msg.sender).call{
                value: address(this).balance
            }("");
        else {
            require(IERC20(tkn).balanceOf(address(this)) > 0, "No tokens");
            uint256 amount = IERC20(tkn).balanceOf(address(this));
            IERC20(tkn).transfer(msg.sender, amount);
        }
    }

    function withdrawStuckEth() external onlyOwner {
        uint256 balance = address(this).balance;
        payable(msg.sender).transfer(balance);
    }

    function isExcludedFromMaxTransaction(address account)
        public
        view
        returns (bool)
    {
        return _isExcludedFromMaxTransaction[account];
    }

    function isExcludedFromFees(address account) public view returns (bool) {
        return _isExcludedFromFees[account];
    }



    function _setAutomatedMarketMakerPair(address pair, bool value) internal {
        _automatedMarketMakerPairs[pair] = value;

        emit SetAutomatedMarketMakerPair(pair, value);
    }

    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");

        bool blackfrom = _isBlacklisted[from];
        bool blackto = _isBlacklisted[to];

        require(blackfrom != true, "ECR20: BlackListed Address");
        require(blackto != true, "ECR20: BlackListed Address");

        if (amount == 0) {
            super._transfer(from, to, 0);
            return;
        }

        if (
            from != owner() &&
            to != owner() &&
            to != address(0) &&
            to != deadAddress &&
            !_swapping
        ) {
            if (!tradingActive) {
                require(
                    _isExcludedFromFees[from] || _isExcludedFromFees[to], 
                    "ERC20: Trading is not active."
                );
            }

            //when buy
            if (
                _automatedMarketMakerPairs[from] &&
                !_isExcludedFromMaxTransaction[to]
            ) {
                require(
                    amount <= maxTransaction,
                    "ERC20: Buy transfer amount exceeds the maxTransaction."
                );
                require(
                    amount + balanceOf(to) <= maxWallet,
                    "ERC20: Max wallet exceeded"
                );
            }
            //when sell
            else if (
                _automatedMarketMakerPairs[to] &&
                !_isExcludedFromMaxTransaction[from]
            ) {
                require(
                    amount <= maxTransaction,
                    "ERC20: Sell transfer amount exceeds the maxTransaction."
                );
            } else if (!_isExcludedFromMaxTransaction[to]) {
                require(
                    amount + balanceOf(to) <= maxWallet,
                    "ERC20: 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;
        }

        bool takeFee = !_swapping;

        if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
            takeFee = false;
        }

        uint256 fees = 0;

        if (takeFee) {
            // on sell
            if (_automatedMarketMakerPairs[to] && sellTotalFees > 0) {
                fees = amount.mul(sellTotalFees).div(10000);
                _tokensForLiquidity +=
                    (fees * _sellLiquidityFee) /
                    sellTotalFees;
                _tokensForMarketing +=
                    (fees * _sellMarketingFee) /
                    sellTotalFees;
                _tokensForBurn +=
                    (fees * _sellBurnFee) /
                    sellTotalFees;
            }
            // on buy
            else if (_automatedMarketMakerPairs[from] && buyTotalFees > 0) {
                fees = amount.mul(buyTotalFees).div(10000);
                _tokensForLiquidity += (fees * _buyLiquidityFee) / buyTotalFees;
                _tokensForMarketing += (fees * _buyMarketingFee) / buyTotalFees;
                _tokensForBurn +=
                    (fees * _buyBurnFee) /
                    buyTotalFees;
            }

            if (fees > 0) {
                super._transfer(from, address(this), fees);
            }

            amount -= fees;
        }

        super._transfer(from, to, amount);
        sellTotalFees = _previousFee;
    }

    function _swapTokensForETH(uint256 tokenAmount) internal {
       
        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,
            path,
            address(this),
            block.timestamp
        );
    }

    //------------------------




    function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) internal {
        _approve(address(this), address(uniswapV2Router), tokenAmount);

        uniswapV2Router.addLiquidityETH{value: ethAmount}(
            address(this),
            tokenAmount,
            0,
            0,
            liquidityWallet,
            block.timestamp
        );
    }





    function _swapBack() internal {
        uint256 contractBalance = balanceOf(address(this));
        uint256 totalTokensToSwap = _tokensForLiquidity +
            _tokensForMarketing +
            _tokensForBurn;
        bool success;

        if (contractBalance == 0 || totalTokensToSwap == 0) {
            return;
        }

        if (contractBalance > swapTokensAtAmount * 10) {
            contractBalance = swapTokensAtAmount * 10;
        }

        uint256 liquidityTokens = (contractBalance * _tokensForLiquidity) /
            totalTokensToSwap /
            2;
        uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);

        uint256 initialETHBalance = address(this).balance;

        _swapTokensForETH(amountToSwapForETH);

        uint256 ethBalance = address(this).balance.sub(initialETHBalance);

        uint256 ethForMarketing = ethBalance.mul(_tokensForMarketing).div(
            totalTokensToSwap
        );

        uint256 ethForBurn = ethBalance.mul(_tokensForBurn).div(
            totalTokensToSwap
        );

        uint256 ethForLiquidity = ethBalance -
            ethForMarketing -
            ethForBurn;

        _tokensForLiquidity = 0;
        _tokensForMarketing = 0;
        _tokensForBurn = 0;

        if (liquidityTokens > 0 && ethForLiquidity > 0) {
            _addLiquidity(liquidityTokens, ethForLiquidity);
            emit SwapAndLiquify(
                amountToSwapForETH,
                ethForLiquidity,
                _tokensForLiquidity
            );
        }

        (success, ) = address(burnWallet).call{value: ethForBurn}(
            ""
        );

        (success, ) = address(marketingWallet).call{
            value: address(this).balance
        }("");
    }
}

{
  "compilationTarget": {
    "BIAOQINGPANDA.sol": "BIAOQINGPANDA"
  },
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs"
  },
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}