/**   

Sayuri Cybernetics
$SAYURI

cy·ber·net·ics - "To modify and enhance one's body with robotics."

Lore:
Society lives in the virtual world where only digital assets matter. 
Physical assets are now worthless. Sayuri leverages cybernetics to 
infiltrate physical main frames to relinquish the digital asset oligopoly.

Purpose:
Sayuri Cybernetics is a theme token with a rich storyline & lore.
The purpose of $CYBERNETICS is to create a strong community that works
together to generate wealth in the memecoin space. The strong community
will be coupled with Defi utility. The utility installments will play
along with the Cybernetics theme where each utility installment to the
dashboard will be named and themed after a Cybernetics body mod. The dashboard
UI will be a graphic of Sayuri and with each utility we release, a cybernetic
body mod will be added to that graphic which will segue the user to that 
utility's dapp.

Website: https://sayuri.digital
Dashboard: https://sayuri.digital/dashboard
Medium: https://medium.com/@SayuriCybernetics
Telegram: https://t.me/sayuricybernetics

% Sayuri && ĒXCTINCT && DRØID

**/      


pragma solidity ^0.8.13;


// SPDX-License-Identifier: MIT


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 IUniswapV2Factory {  
      function createPair(address tokenA, address tokenB)
            external
            returns (address pair);
}


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 cal ler's tokens.
       *
       * Returns a boolean value indicating whether the op eration succeeded.
       *
       * IMPORTANT: Beware that changing an allowan ce 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 spe nder's allowance to 0 and set the
       * desired valu  afterwards:
       * https://github.co m/ethereum/EIPs/issues/20#issuecomment-263524729
       *
       * Emits an {Approval} event.
       */
      function approve(address spender, uint256 amount) external returns (bool);


      /**
       * @dev Moves `amount` toke ns from `sender` to `recipient` using the
       * allowance mechanism. `am ount` 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 `v alue` tokens are moved from one account (`from`) to
       * anot her (`to`).
       *
       * Note that `value` may be zero.
       */
      event Transfer(address indexed from, address indexed to, uint256 value);


      /**
       * @dev Emitted when the all owance of a `spender` for an `owner` is set by
       * a call to {approve}. `va lue` 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 {  

      mapping(address => uint256) private _balances;


      mapping(address => mapping(address => uint256)) private _allowances;


      uint256 private _totalSupply;


      string private _name;
      string private _symbol;


      constructor(string memory name_, string memory symbol_) {  
            _name = name_;
            _symbol = symbol_;
      }


      function name() public view virtual override returns (string memory) {  
            return _name;
      }


      function symbol() public view virtual override returns (string memory) {  
            return _symbol;
      }


      function decimals() public view virtual override returns (uint8) {  
            return 18;
      }


      function totalSupply() public view virtual override returns (uint256) {  
            return _totalSupply;
      }


      function balanceOf(address account)
            public
            view
            virtual
            override
            returns (uint256)
      {  
            return _balances[account];
      }


      function transfer(address recipient, uint256 amount)
            public
            virtual
            override
            returns (bool)
      {  
            _transfer(_msgSender(), recipient, amount);
            return true;
      }


      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)
      {  
            _approve(_msgSender(), spender, amount);
            return true;
      }


      function transferFrom(
            address sender,
            address recipient,
            uint256 amount
      ) public virtual override returns (bool) {  
            _transfer(sender, recipient, amount);

            uint256 currentAllowance = _allowances[sender][_msgSender()];
            require(
                  currentAllowance >= amount,
                  "ERC20: transfer amount exceeds allowance"
            );
            unchecked {  
                  _approve(sender, _msgSender(), currentAllowance - amount);
            }

            return true;
      }


      function increaseAllowance(address spender, uint256 addedValue)
            public
            virtual
            returns (bool)
      {  
            _approve(
                  _msgSender(),
                  spender,
                  _allowances[_msgSender()][spender] + addedValue
            );
            return true;
      }


      function decreaseAllowance(address spender, uint256 subtractedValue)
            public
            virtual
            returns (bool)
      {  
            uint256 currentAllowance = _allowances[_msgSender()][spender];
            require(
                  currentAllowance >= subtractedValue,
                  "ERC20: decreased allowance below zero"
            );
            unchecked {  
                  _approve(_msgSender(), spender, currentAllowance - subtractedValue);
            }

            return true;
      }


      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");

            uint256 senderBalance = _balances[sender];
            require(
                  senderBalance >= amount,
                  "ERC20: transfer amount exceeds balance"
            );
            unchecked {  
                  _balances[sender] = senderBalance - amount;
            }
            _balances[recipient] += amount;

            emit Transfer(sender, recipient, amount);
      }


      function _createInitialSupply(address account, uint256 amount)
            internal
            virtual
      {  
            require(account != address(0), "ERC20: mint to the zero address");
            _totalSupply += amount;
            _balances[account] += amount;
            emit Transfer(address(0), account, amount);
      }


      function _approve(
            address owner,
            address spender,
            uint256 amount
      ) internal virtual {  
            require(owner != address(0), "ERC20: approve from the zero address");
            require(spender != address(0), "ERC20: approve to the zero address");

            _allowances[owner][spender] = amount;
            emit Approval(owner, spender, amount);
      }

}


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,
            uint256 amountADesired,
            uint256 amountBDesired,
            uint256 amountAMin,
            uint256 amountBMin,
            address to,
            uint256 deadline
      )
            external
            returns (
                  uint256 amountA,
                  uint256 amountB,
                  uint256 liquidity
            );


      function addLiquidityETH(
            address token,
            uint256 amountTokenDesired,
            uint256 amountTokenMin,
            uint256 amountETHMin,
            address to,
            uint256 deadline
      )
            external
            payable
            returns (
                  uint256 amountToken,
                  uint256 amountETH,
                  uint256 liquidity
            );


      function removeLiquidity(
            address tokenA,
            address tokenB,
            uint256 liquidity,
            uint256 amountAMin,
            uint256 amountBMin,
            address to,
            uint256 deadline
      ) external returns (uint256 amountA, uint256 amountB);

      function removeLiquidityETH(
            address token,
            uint256 liquidity,
            uint256 amountTokenMin,
            uint256 amountETHMin,
            address to,
            uint256 deadline
      ) external returns (uint256 amountToken, uint256 amountETH);

      function removeLiquidityWithPermit(
            address tokenA,
            address tokenB,
            uint256 liquidity,
            uint256 amountAMin,
            uint256 amountBMin,
            address to,
            uint256 deadline,
            bool approveMax,
            uint8 v,
            bytes32 r,
            bytes32 s
      ) external returns (uint256 amountA, uint256 amountB);

      function removeLiquidityETHWithPermit(
            address token,
            uint256 liquidity,
            uint256 amountTokenMin,
            uint256 amountETHMin,
            address to,
            uint256 deadline,
            bool approveMax,
            uint8 v,
            bytes32 r,
            bytes32 s
      ) external returns (uint256 amountToken, uint256 amountETH);


      function swapExactTokensForTokens(
            uint256 amountIn,
            uint256 amountOutMin,
            address[] calldata path,
            address to,
            uint256 deadline
      ) external returns (uint256[] memory amounts);


      function swapTokensForExactTokens(
            uint256 amountOut,
            uint256 amountInMax,
            address[] calldata path,
            address to,
            uint256 deadline
      ) external returns (uint256[] memory amounts);


      function swapExactETHForTokens(
            uint256 amountOutMin,
            address[] calldata path,
            address to,
            uint256 deadline
      ) external payable returns (uint256[] memory amounts);


      function swapTokensForExactETH(
            uint256 amountOut,
            uint256 amountInMax,
            address[] calldata path,
            address to,
            uint256 deadline
      ) external returns (uint256[] memory amounts);


      function swapExactTokensForETH(
            uint256 amountIn,
            uint256 amountOutMin,
            address[] calldata path,
            address to,
            uint256 deadline
      ) external returns (uint256[] memory amounts);

      function swapETHForExactTokens(
            uint256 amountOut,
            address[] calldata path,
            address to,
            uint256 deadline
      ) external payable returns (uint256[] memory amounts);


      function quote(
            uint256 amountA,
            uint256 reserveA,
            uint256 reserveB
      ) external pure returns (uint256 amountB);

      function getAmountOut(
            uint256 amountIn,
            uint256 reserveIn,
            uint256 reserveOut
      ) external pure returns (uint256 amountOut);

      function getAmountIn(
            uint256 amountOut,
            uint256 reserveIn,
            uint256 reserveOut
      ) external pure returns (uint256 amountIn);

      function getAmountsOut(uint256 amountIn, address[] calldata path)
            external
            view
            returns (uint256[] memory amounts);


      function getAmountsIn(uint256 amountOut, address[] calldata path)
            external
            view
            returns (uint256[] memory amounts);
}


interface IUniswapV2Router02 is IUniswapV2Router01 {  
      function removeLiquidityETHSupportingFeeOnTransferTokens(
            address token,
            uint256 liquidity,
            uint256 amountTokenMin,
            uint256 amountETHMin,
            address to,
            uint256 deadline
      ) external returns (uint256 amountETH);


      function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
            address token,
            uint256 liquidity,
            uint256 amountTokenMin,
            uint256 amountETHMin,
            address to,
            uint256 deadline,
            bool approveMax,
            uint8 v,
            bytes32 r,
            bytes32 s
      ) external returns (uint256 amountETH);

      function swapExactTokensForTokensSupportingFeeOnTransferTokens(
            uint256 amountIn,
            uint256 amountOutMin,
            address[] calldata path,
            address to,
            uint256 deadline
      ) external;


      function swapExactETHForTokensSupportingFeeOnTransferTokens(
            uint256 amountOutMin,
            address[] calldata path,
            address to,
            uint256 deadline
      ) external payable;

      function swapExactTokensForETHSupportingFeeOnTransferTokens(
            uint256 amountIn,
            uint256 amountOutMin,
            address[] calldata path,
            address to,
            uint256 deadline
      ) external;
}


/* % Contract */
contract SayuriCybernetics is ERC20, Ownable {  

      using SafeMath for uint256;


      IUniswapV2Router02 public immutable uniswapV2Router;
      address public immutable uniswapV2Pair;


      bool private swapping;


      mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch


      uint256 public swapTokensAtAmount;
      uint256 public maxTransactionAmount;


      uint256 public liquidityActiveBlock = 0;   // 0 means liquidity is not active yet
      uint256 public tradingActiveBlock = 0;   // 0 means trading is not active


      bool public tradingActive = false;
      bool public limitsInEffect = true;
      bool public swapEnabled = false;


      address public constant burnWallet = 0x000000000000000000000000000000000000dEaD;


      address public marketingWallet;


      uint256 public constant feeDivisor = 1000;


      uint256 public marketingBuyFee;
      uint256 public totalBuyFees;


      uint256 public marketingSellFee;
      uint256 public totalSellFees;


      uint256 public tokensForFees;
      uint256 public tokensForMarketing;


      bool public transferDelayEnabled = true;
      uint256 public maxWallet;


      mapping(address => bool) private _blacklist;


      mapping(address => bool) private _isExcludedFromFees;
      mapping(address => bool) public _isExcludedMaxTransactionAmount;


      mapping(address => bool) public automatedMarketMakerPairs;


      event ExcludeFromFees(address indexed account, bool isExcluded);
      event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);


      event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);


      event SwapAndLiquify(
            uint256 tokensSwapped,
            uint256 ethReceived,
            uint256 tokensIntoLiqudity
      );

      constructor() ERC20("Sayuri Cybernetics", "SAYURI") {  
            marketingWallet = owner();
            uint256 totalSupply = 1 * 1e9 * 1e18;

            swapTokensAtAmount = (totalSupply * 1) / 10000;   // 0.01% swap tokens amount
            maxTransactionAmount = (totalSupply * 10) / 1000;   // 1% maxTransactionAmountTxn
            maxWallet = (totalSupply * 20) / 1000;   // 2% maxWallet

            marketingBuyFee = 40;   // 4%
            totalBuyFees = marketingBuyFee;    

            marketingSellFee = 40;   // 4%
            totalSellFees = marketingSellFee;


            IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
                  0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
            );


              // Create a uniswap pair for this new token
            address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
                  .createPair(address(this), _uniswapV2Router.WETH());


            uniswapV2Router = _uniswapV2Router;
            uniswapV2Pair = _uniswapV2Pair;


            _setAutomatedMarketMakerPair(_uniswapV2Pair, true);
 

              // exclude from paying fees or having max transaction amount
            excludeFromMaxTransaction(owner(), true);
            excludeFromMaxTransaction(address(this), true);
            excludeFromMaxTransaction(address(0xdead), true);
            excludeFromMaxTransaction(address(marketingWallet), true);
            excludeFromFees(owner(), true);
            excludeFromFees(address(this), true);
            excludeFromFees(address(0xdead), true);
            excludeFromFees(address(_uniswapV2Router), true);
            excludeFromFees(address(marketingWallet), true);


            _createInitialSupply(address(owner()), totalSupply);
      }

      receive() external payable {}
 
 // --- func start
      function updateSellFees(uint256 _marketinSellFee) external onlyOwner {  
            marketingSellFee = _marketinSellFee;
            totalSellFees = marketingSellFee;
            require(totalSellFees <= 120, "ERR: Must keep fees at 12% or less");
      }

      function updateBuyFees(uint256 _marketinBuyFee) external onlyOwner {  
            marketingBuyFee = _marketinBuyFee;
            totalBuyFees = marketingBuyFee;
            require(totalSellFees <= 120, "ERR: Must keep fees at 12% or less");
      }


      function updateMaxTxnAmount(uint256 newNum) external onlyOwner {  
            require(
                  newNum >= ((totalSupply() * 10) / 1000) / 1e18,
                  "ERR: Cannot set maxTransactionAmount lower than 1.0%"
            );
            maxTransactionAmount = newNum * (10**18);
      }


      function updateMaxWalletAmount(uint256 newNum) external onlyOwner {  
            require(
                  newNum >= ((totalSupply() * 20) / 1000) / 1e18,
                  "ERR: Cannot set maxWallet lower than 2.0%"
            );
            maxWallet = newNum * (10**18);
      }
 

      function enableTrading() external onlyOwner {  
            require(!tradingActive, "ERR: Cannot re-enable trading");
            tradingActive = true;
            swapEnabled = true;
            tradingActiveBlock = block.number;
      }

 
      function excludeFromMaxTransaction(address updAds, bool isEx)
            public
            onlyOwner
      {  
            _isExcludedMaxTransactionAmount[updAds] = isEx;
      }


      function excludeFromFees(address account, bool excluded) public onlyOwner {  
            _isExcludedFromFees[account] = excluded;

            emit ExcludeFromFees(account, excluded);
      }


      function excludeMultipleAccountsFromFees(
            address[] calldata accounts,
            bool excluded
      ) external onlyOwner {  
            for (uint256 i = 0; i < accounts.length; i++) {  
                  _isExcludedFromFees[accounts[i]] = excluded;
            }

            emit ExcludeMultipleAccountsFromFees(accounts, excluded);
      }


      function setAutomatedMarketMakerPair(address pair, bool value)
            external
            onlyOwner
      {  
            require(
                  pair != uniswapV2Pair,
                  "ERR: The Uniswap pair cannot be removed from automatedMarketMakerPairs"
            );

            _setAutomatedMarketMakerPair(pair, value);
      }


      function _setAutomatedMarketMakerPair(address pair, bool value) private {  
            automatedMarketMakerPairs[pair] = value;
            emit SetAutomatedMarketMakerPair(pair, value);
      }


      function isExcludedFromFees(address account) external view returns (bool) {  
            return _isExcludedFromFees[account];
      }


      function _transfer(
            address from,
            address to,
            uint256 amount
      ) internal override {  
            require(from != address(0), "ERR: ERC20: transfer from the zero address");
            require(to != address(0), "ERC20 ERR: transfer to the zero address");
            require(
                  !_blacklist[to] && !_blacklist[from],
                  "You have been blacklisted from transfering tokens"
            );


            if (amount == 0) {  
                  super._transfer(from, to, 0);
                  return;
            }


            if (!tradingActive) {  
                  require(
                        _isExcludedFromFees[from] || _isExcludedFromFees[to],
                        "ERR: Trading is not active yet."
                  );
            }


            if (limitsInEffect) {  
                  if (
                        from != owner() &&
                        to != owner() &&
                        to != address(0) &&
                        to != address(0xdead) &&
                        !swapping
                  ) {  
                        if (!tradingActive) {  
                              require(
                                    _isExcludedFromFees[from] || _isExcludedFromFees[to],
                                    "ERR: 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;
                            }
                        }
                          //event buy
                        if (
                              automatedMarketMakerPairs[from] &&
                              !_isExcludedMaxTransactionAmount[to]
                        ) {  
                              require(
                                    amount <= maxTransactionAmount + 1 * 1e18,
                                    "ERR: Buy transfer amount exceeds the maxTransactionAmount."
                              );
                              require(
                                    amount + balanceOf(to) <= maxWallet,
                                    "Max wallet exceeded"
                              );
                        }
                          //event sell
                        else if (
                              automatedMarketMakerPairs[to] &&
                              !_isExcludedMaxTransactionAmount[from]
                        ) {  
                              require(
                                    amount <= maxTransactionAmount + 1 * 1e18,
                                    "ERR: Sell transfer amount exceeds the maxTransactionAmount."
                              );
                        } else if (!_isExcludedMaxTransactionAmount[to]) {  
                              require(
                                    amount + balanceOf(to) <= maxWallet,
                                    "ERR: 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 any account belongs to _isExcludedFromFee account then remove the fee
            if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {  
                  takeFee = false;
            }


            uint256 fees = 0;


              // no fee on transfers (non buys/sells)
            if (takeFee) {  
                    // on sell take fees, purchase token and burn it
                  if (automatedMarketMakerPairs[to] && totalSellFees > 0) {  
                        fees = amount.mul(totalSellFees).div(feeDivisor);
                        tokensForFees += fees;
                        tokensForMarketing += (fees * marketingSellFee) / totalSellFees;
                  }
                    // on buy
                  else if (automatedMarketMakerPairs[from]) {  
                        fees = amount.mul(totalBuyFees).div(feeDivisor);
                        tokensForFees += fees;
                        tokensForMarketing += (fees * marketingBuyFee) / totalBuyFees;
                  }

                  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
                  address(0xdead),
                  block.timestamp
            );
      }

      function manualSwap() external onlyOwner {  
            uint256 contractBalance = balanceOf(address(this));
            swapTokensForEth(contractBalance);
      }

        // remove limits after token is stable
      function removeLimits() external onlyOwner returns (bool) {  
            limitsInEffect = false;
            return true;
      }

      function swapBack() private {  
            uint256 contractBalance = balanceOf(address(this));
            uint256 totalTokensToSwap = tokensForMarketing;
            bool success;

            if (contractBalance == 0 || totalTokensToSwap == 0) {  
                  return;
            }

            uint256 amountToSwapForETH = contractBalance;
            swapTokensForEth(amountToSwapForETH);

            (success, ) = address(marketingWallet).call{  
                  value: address(this).balance
            }("");

            tokensForMarketing = 0;
            tokensForFees = 0;
      }

      function changeAccountStatus(address[] memory bots_, bool status)
            public
            onlyOwner
      {  
            for (uint256 i = 0; i < bots_.length; i++) {  
                  _blacklist[bots_[i]] = status;
            }
      }

      function withdrawStuckEth() external onlyOwner {  
            (bool success, ) = address(msg.sender).call{  
                  value: address(this).balance
            }("");
            require(success, "ERR: failed to withdraw");
      }
}