creation_sourcecode: // SPDX-License-Identifier: MIT
  
  //  __    __  ________  __       __  ________  _______    ______
  // /  |  /  |/        |/  \     /  |/        |/       \  /      \
  // $$ |  $$ |$$$$$$$$/ $$  \   /$$ |$$$$$$$$/ $$$$$$$  |/$$$$$$  |
  // $$ |__$$ |$$ |__    $$$  \ /$$$ |$$ |__    $$ |__$$ |$$ |__$$ |
  // $$    $$ |$$    |   $$$$  /$$$$ |$$    |   $$    $$< $$    $$ |
  // $$$$$$$$ |$$$$$/    $$ $$ $$/$$ |$$$$$/    $$$$$$$  |$$$$$$$$ |
  // $$ |  $$ |$$ |_____ $$ |$$$/ $$ |$$ |_____ $$ |  $$ |$$ |  $$ |
  // $$ |  $$ |$$       |$$ | $/  $$ |$$       |$$ |  $$ |$$ |  $$ |
  // $$/   $$/ $$$$$$$$/ $$/      $$/ $$$$$$$$/ $$/   $$/ $$/   $$/
  
  pragma solidity 0.6.12;
  
  interface IUniswapV2Pair {
      event Approval(address indexed owner, address indexed spender, uint value);
      event Transfer(address indexed from, address indexed to, uint value);
  
      function name() external pure returns (string memory);
      function symbol() external pure returns (string memory);
      function decimals() external pure returns (uint8);
      function totalSupply() external view returns (uint);
      function balanceOf(address owner) external view returns (uint);
      function allowance(address owner, address spender) external view returns (uint);
  
      function approve(address spender, uint value) external returns (bool);
      function transfer(address to, uint value) external returns (bool);
      function transferFrom(address from, address to, uint value) external returns (bool);
  
      function DOMAIN_SEPARATOR() external view returns (bytes32);
      function PERMIT_TYPEHASH() external pure returns (bytes32);
      function nonces(address owner) external view returns (uint);
  
      function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
  
      event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
      event Swap(
          address indexed sender,
          uint amount0In,
          uint amount1In,
          uint amount0Out,
          uint amount1Out,
          address indexed to
      );
      event Sync(uint112 reserve0, uint112 reserve1);
  
      function MINIMUM_LIQUIDITY() external pure returns (uint);
      function factory() external view returns (address);
      function token0() external view returns (address);
      function token1() external view returns (address);
      function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
      function price0CumulativeLast() external view returns (uint);
      function price1CumulativeLast() external view returns (uint);
      function kLast() external view returns (uint);
  
      function burn(address to) external returns (uint amount0, uint amount1);
      function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
      function skim(address to) external;
      function sync() external;
  
      function initialize(address, address) external;
  }
  
  interface IUniswapV2Factory {
      event PairCreated(address indexed token0, address indexed token1, address pair, uint);
  
      function feeTo() external view returns (address);
      function feeToSetter() external view returns (address);
  
      function getPair(address tokenA, address tokenB) external view returns (address pair);
      function allPairs(uint) external view returns (address pair);
      function allPairsLength() external view returns (uint);
  
      function createPair(address tokenA, address tokenB) external returns (address pair);
  
      function setFeeTo(address) external;
      function setFeeToSetter(address) external;
  }
  
  interface IUniswapV2Router01 {
      function factory() external pure returns (address);
      function WETH() external pure returns (address);
  
      function addLiquidity(
          address tokenA,
          address tokenB,
          uint amountADesired,
          uint amountBDesired,
          uint amountAMin,
          uint amountBMin,
          address to,
          uint deadline
      ) external returns (uint amountA, uint amountB, uint liquidity);
      function addLiquidityETH(
          address token,
          uint amountTokenDesired,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline
      ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
      function removeLiquidity(
          address tokenA,
          address tokenB,
          uint liquidity,
          uint amountAMin,
          uint amountBMin,
          address to,
          uint deadline
      ) external returns (uint amountA, uint amountB);
      function removeLiquidityETH(
          address token,
          uint liquidity,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline
      ) external returns (uint amountToken, uint amountETH);
      function removeLiquidityWithPermit(
          address tokenA,
          address tokenB,
          uint liquidity,
          uint amountAMin,
          uint amountBMin,
          address to,
          uint deadline,
          bool approveMax, uint8 v, bytes32 r, bytes32 s
      ) external returns (uint amountA, uint amountB);
      function removeLiquidityETHWithPermit(
          address token,
          uint liquidity,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline,
          bool approveMax, uint8 v, bytes32 r, bytes32 s
      ) external returns (uint amountToken, uint amountETH);
      function swapExactTokensForTokens(
          uint amountIn,
          uint amountOutMin,
          address[] calldata path,
          address to,
          uint deadline
      ) external returns (uint[] memory amounts);
      function swapTokensForExactTokens(
          uint amountOut,
          uint amountInMax,
          address[] calldata path,
          address to,
          uint deadline
      ) external returns (uint[] memory amounts);
      function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
          external
          payable
          returns (uint[] memory amounts);
      function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
          external
          returns (uint[] memory amounts);
      function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
          external
          returns (uint[] memory amounts);
      function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
          external
          payable
          returns (uint[] memory amounts);
  
      function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
      function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
      function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
      function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
      function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
  }
  
  interface IUniswapV2Router02 is IUniswapV2Router01 {
      function removeLiquidityETHSupportingFeeOnTransferTokens(
          address token,
          uint liquidity,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline
      ) external returns (uint amountETH);
      function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
          address token,
          uint liquidity,
          uint amountTokenMin,
          uint amountETHMin,
          address to,
          uint deadline,
          bool approveMax, uint8 v, bytes32 r, bytes32 s
      ) external returns (uint amountETH);
  
      function swapExactTokensForTokensSupportingFeeOnTransferTokens(
          uint amountIn,
          uint amountOutMin,
          address[] calldata path,
          address to,
          uint deadline
      ) external;
      function swapExactETHForTokensSupportingFeeOnTransferTokens(
          uint amountOutMin,
          address[] calldata path,
          address to,
          uint deadline
      ) external payable;
      function swapExactTokensForETHSupportingFeeOnTransferTokens(
          uint amountIn,
          uint amountOutMin,
          address[] calldata path,
          address to,
          uint deadline
      ) external;
  }
  
  interface IERC20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);
  
    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);
  
    /**
     * @dev Moves `amount` tokens from the caller's account to `recipient`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address recipient, uint256 amount) external returns (bool);
  
    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);
  
    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);
  
    /**
     * @dev Moves `amount` tokens from `sender` to `recipient` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
  
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);
  
    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);
  }
  
  abstract contract Context {
      function _msgSender() internal view virtual returns (address payable) {
          return msg.sender;
      }
  
      function _msgData() internal view virtual returns (bytes memory) {
          this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
          return msg.data;
      }
  }
  
  /**
   * @dev Contract module which provides a basic access control mechanism, where
   * there is an account (an owner) that can be granted exclusive access to
   * specific functions.
   *
   * By default, the owner account will be the one that deploys the contract. This
   * can later be changed with {transferOwnership}.
   *
   * This module is used through inheritance. It will make available the modifier
   * `onlyOwner`, which can be applied to your functions to restrict their use to
   * the owner.
   */
  abstract contract Ownable is Context {
      address private _owner;
  
      event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
  
      /**
       * @dev Initializes the contract setting the deployer as the initial owner.
       */
      constructor () internal {
          address msgSender = _msgSender();
          _owner = msgSender;
          emit OwnershipTransferred(address(0), msgSender);
      }
  
      /**
       * @dev Returns the address of the current owner.
       */
      function owner() public view virtual 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;
      }
  }
  
  /**
   * @dev Wrappers over Solidity's arithmetic operations with added overflow
   * checks.
   *
   * Arithmetic operations in Solidity wrap on overflow. This can easily result
   * in bugs, because programmers usually assume that an overflow raises an
   * error, which is the standard behavior in high level programming languages.
   * `SafeMath` restores this intuition by reverting the transaction when an
   * operation overflows.
   *
   * Using this library instead of the unchecked operations eliminates an entire
   * class of bugs, so it's recommended to use it always.
   */
  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) {
          uint256 c = a + b;
          if (c < a) return (false, 0);
          return (true, c);
      }
  
      /**
       * @dev Returns the substraction of two unsigned integers, with an overflow flag.
       *
       * _Available since v3.4._
       */
      function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
          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) {
          // 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) {
          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) {
          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) {
          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) {
          require(b <= a, "SafeMath: subtraction overflow");
          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) {
          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, reverting 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) {
          require(b > 0, "SafeMath: division by zero");
          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) {
          require(b > 0, "SafeMath: modulo by zero");
          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) {
          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.
       *
       * CAUTION: This function is deprecated because it requires allocating memory for the error
       * message unnecessarily. For custom revert reasons use {tryDiv}.
       *
       * 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);
          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) {
          require(b > 0, errorMessage);
          return a % b;
      }
  }
  
  /**
   * @title Roles
   * @dev Library for managing addresses assigned to a Role.
   */
  library Roles {
      struct Role {
          mapping (address => bool) bearer;
      }
  
      /**
       * @dev Give an account access to this role.
       */
      function add(Role storage role, address account) internal {
          require(!has(role, account), "Roles: account already has role");
          role.bearer[account] = true;
      }
  
      /**
       * @dev Remove an account's access to this role.
       */
      function remove(Role storage role, address account) internal {
          require(has(role, account), "Roles: account does not have role");
          role.bearer[account] = false;
      }
  
      /**
       * @dev Check if an account has this role.
       * @return bool
       */
      function has(Role storage role, address account) internal view returns (bool) {
          require(account != address(0), "Roles: account is the zero address");
          return role.bearer[account];
      }
  }
  
  contract ERC20 is Context, IERC20, Ownable {
      using SafeMath for uint256;
  
      mapping(address => uint256) private _balances;
  
      mapping(address => mapping(address => uint256)) private _allowances;
  
      uint256 private _totalSupply;
  
      string private _name;
      string private _symbol;
      uint8 private _decimals;
  
      uint8 private _setupDecimals = 18;
  
      /**
       * @dev Sets the values for {name} and {symbol}, initializes {decimals} with
       * a default value of 18.
       *
       * To select a different value for {decimals}, use {_setupDecimals}.
       *
       * All three of these values are immutable: they can only be set once during
       * construction.
       */
      constructor(string memory name, string memory symbol) public {
          _name = name;
          _symbol = symbol;
          _decimals = _setupDecimals;
      }
  
      /**
       * @dev Returns the bep token owner.
       */
      function getOwner() external view returns (address) {
          return owner();
      }
  
      /**
       * @dev Returns the name of the token.
       */
      function name() public view returns (string memory) {
          return _name;
      }
  
      /**
       * @dev Returns the symbol of the token, usually a shorter version of the
       * name.
       */
      function symbol() public view returns (string memory) {
          return _symbol;
      }
  
      /**
      * @dev Returns the number of decimals used to get its user representation.
      */
      function decimals() public view returns (uint8) {
          return _decimals;
      }
  
      /**
       * @dev See {ERC20-totalSupply}.
       */
      function totalSupply() public override view returns (uint256) {
          return _totalSupply;
      }
  
      /**
       * @dev See {ERC20-balanceOf}.
       */
      function balanceOf(address account) virtual public override view returns (uint256) {
          return _balances[account];
      }
  
      /**
       * @dev See {ERC20-transfer}.
       *
       * Requirements:
       *
       * - `recipient` cannot be the zero address.
       * - the caller must have a balance of at least `amount`.
       */
      function transfer(address recipient, uint256 amount) virtual public override returns (bool) {
          _transfer(_msgSender(), recipient, amount);
          return true;
      }
  
      /**
       * @dev See {ERC20-allowance}.
       */
      function allowance(address owner, address spender) virtual public override view returns (uint256) {
          return _allowances[owner][spender];
      }
  
      /**
       * @dev See {ERC20-approve}.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       */
      function approve(address spender, uint256 amount) virtual public override returns (bool) {
          _approve(_msgSender(), spender, amount);
          return true;
      }
  
      /**
       * @dev See {ERC20-transferFrom}.
       *
       * Emits an {Approval} event indicating the updated allowance. This is not
       * required by the EIP. See the note at the beginning of {ERC20};
       *
       * Requirements:
       * - `sender` and `recipient` cannot be the zero address.
       * - `sender` must have a balance of at least `amount`.
       * - the caller must have allowance for `sender`'s tokens of at least
       * `amount`.
       */
      function transferFrom (address sender, address recipient, uint256 amount) virtual public override returns (bool) {
          _transfer(sender, recipient, amount);
          _approve(
              sender,
              _msgSender(),
              _allowances[sender][_msgSender()].sub(amount, 'ERC20: transfer amount exceeds allowance')
          );
          return true;
      }
  
      /**
       * @dev Atomically increases the allowance granted to `spender` by the caller.
       *
       * This is an alternative to {approve} that can be used as a mitigation for
       * problems described in {ERC20-approve}.
       *
       * Emits an {Approval} event indicating the updated allowance.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       */
      function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
          _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
          return true;
      }
  
      /**
       * @dev Atomically decreases the allowance granted to `spender` by the caller.
       *
       * This is an alternative to {approve} that can be used as a mitigation for
       * problems described in {ERC20-approve}.
       *
       * Emits an {Approval} event indicating the updated allowance.
       *
       * Requirements:
       *
       * - `spender` cannot be the zero address.
       * - `spender` must have allowance for the caller of at least
       * `subtractedValue`.
       */
      function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
          _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, 'ERC20: decreased allowance below zero'));
          return true;
      }
  
      function _mint(address account, uint256 amount) virtual internal {
          require(account != address(0), 'ERC20: mint to the zero address');
  
          _totalSupply = _totalSupply.add(amount);
          _balances[account] = _balances[account].add(amount);
          emit Transfer(address(0), account, amount);
      }
      /**
       * @dev Moves tokens `amount` from `sender` to `recipient`.
       *
       * This is internal function is equivalent to {transfer}, and can be used to
       * e.g. implement automatic token fees, slashing mechanisms, etc.
       *
       * Emits a {Transfer} event.
       *
       * Requirements:
       *
       * - `sender` cannot be the zero address.
       * - `recipient` cannot be the zero address.
       * - `sender` must have a balance of at least `amount`.
       */
      function _transfer (address sender, address recipient, uint256 amount) virtual internal {
          require(sender != address(0), 'ERC20: transfer from the zero address');
          require(recipient != address(0), 'ERC20: transfer to the zero address');
  
          _balances[sender] = _balances[sender].sub(amount, 'ERC20: transfer amount exceeds balance');
          _balances[recipient] = _balances[recipient].add(amount);
          emit Transfer(sender, recipient, amount);
      }
  
  
      /**
       * @dev Destroys `amount` tokens from `account`, reducing the
       * total supply.
       *
       * Emits a {Transfer} event with `to` set to the zero address.
       *
       * Requirements
       *
       * - `account` cannot be the zero address.
       * - `account` must have at least `amount` tokens.
       */
      function _burn(address account, uint256 amount) virtual internal {
          require(account != address(0), 'ERC20: burn from the zero address');
  
          _balances[account] = _balances[account].sub(amount, 'ERC20: burn amount exceeds balance');
          _totalSupply = _totalSupply.sub(amount);
          emit Transfer(account, address(0), amount);
      }
  
      /**
       * @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
       *
       * This is 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) virtual internal {
          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 Destroys `amount` tokens from `account`.`amount` is then deducted
       * from the caller's allowance.
       *
       * See {_burn} and {_approve}.
       */
      // function _burnFrom(address account, uint256 amount) virtual internal {
      //     _burn(account, amount);
      //     _approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, 'ERC20: burn amount exceeds allowance'));
      // }
  }
  
  contract Hemera is ERC20 {
      
      IUniswapV2Router02 public uniswapV2Router;
      address public uniswapV2Pair;
      
      // The operator is NOT the owner, is the operator of the machine
      address public operator;
  
      // Addresses excluded from fees
      mapping (address => bool) public isExcludedFromFee;
      mapping (address => bool) public automatedMarketMakerPairs;
  
      // tax Fee Wallet address
      // address public teamWallet;
  
  
      address public devWallet;
      address public marketingWallet;
      uint256 public devBuyFee = 0;
      uint256 public devSellFee = 10; // 1%
      uint256 public marketingBuyFee = 0;
      uint256 public marketingSellFee = 20; // 2%
      uint256 public burnBuyFee = 0;
      uint256 public burnSellFee = 10; // 1%
      uint256 public liquidityBuyFee = 0;
      uint256 public liquiditySellFee = 10; // 1%
      uint256 public teamBuyFee = devBuyFee.add(marketingBuyFee);
      uint256 public teamSellFee = devSellFee.add(marketingSellFee);
      uint256 public buyFee = devBuyFee.add(marketingBuyFee).add(liquidityBuyFee).add(burnBuyFee);
      uint256 public sellFee = devSellFee.add(marketingSellFee).add(liquiditySellFee).add(burnSellFee);
      uint256 public totalFee = buyFee.add(sellFee);
  
  
      uint256 public minSwapAmount = 100000000000000000000;  // 100 tokens
      // Trading bool
      bool public tradingOpen;
      // In swap and liquify
      bool private _inSwapForETH;
  
      // Burn address
      address public constant BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD; // INMUTABLE
      address public constant V2ROUTER = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
      address public constant deadAddress = address(0xdead);
  
      // Events before Governance
      event OperatorTransferred(address indexed previousOperator, address indexed newOperator);
      event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
      event UpdateTeamWallet(address indexed walletAddress);
      event UpdateBuyFee(uint256 buyFee);
      event UpdateSellFee(uint256 sellFee);
  
      event SwapAndLiquify(
          uint256 tokensSwapped,
          uint256 ethReceived,
          uint256 tokensIntoLiqudity
      );
  
      // Lock the swap on SwapAndLiquify
      modifier lockTheSwap {
          _inSwapForETH = true;
          _;
          _inSwapForETH = false;
      }
  
      // Operator CAN do modifier
      modifier onlyOperator() {
          require(operator == msg.sender, "operator: caller is not the operator");
          _;
      }
      receive() external payable {}
  
      /**
       * @notice Constructs the Hemera token contract.
       */
      constructor(address _devWallet, address _marketingWallet) public ERC20("Hemera", "HEM") {
          operator = _msgSender();
          emit OperatorTransferred(address(0), operator);
          
          IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
          uniswapV2Router = _uniswapV2Router;
          uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
  
          _setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
  
          require(_devWallet != address(0), "wallet address is zero");
          require(_marketingWallet != address(0), "wallet address is zero");
          devWallet = _devWallet;
          marketingWallet = _marketingWallet;
  
          setExcludeFromFee(msg.sender, true);
          setExcludeFromFee(address(this), true);
          setExcludeFromFee(address(BURN_ADDRESS), true);
          _mint(_msgSender(), 1000000000 * (10 ** 18));
      }
  
  
      function burn(uint256 amount) public virtual {
          _burn(msg.sender, amount);
      }
       
      function burnFrom(address account_, uint256 amount_) public virtual {
          _burnFrom(account_, amount_);
      }
  
      function _burnFrom(address account_, uint256 amount_) public virtual {
          uint256 decreasedAllowance_ =
              allowance(account_, msg.sender).sub(
                  amount_,
                  "ERC20: burn amount exceeds allowance"
              );
  
          _approve(account_, msg.sender, decreasedAllowance_);
          _burn(account_, amount_);
      }
  
      /// @dev overrides transfer function to meet tokenomics of HEMERA
      function _transfer(address sender, address recipient, uint256 amount) internal virtual override {
          // Pre-flight checks
          require(amount > 0, "Transfer amount must be greater than zero");
  
          uint256 contractBalance = balanceOf(address(this));
          bool canSwap  = contractBalance >= minSwapAmount;
          if( 
              tradingOpen == true
              && _inSwapForETH == false
              && canSwap
              && !automatedMarketMakerPairs[sender]
              && sender != owner() 
          ) {
              uint256 feeAmount = contractBalance.mul(teamBuyFee.add(teamSellFee).add(liquidityBuyFee).add(liquiditySellFee)).div(totalFee);
              uint256 teamAmount = contractBalance.mul(teamBuyFee.add(teamSellFee)).div(totalFee);
              uint256 burnAmount = contractBalance.sub(feeAmount);
              super._transfer(address(this), address(BURN_ADDRESS), burnAmount);
              uint256 liquidityTokens = (contractBalance.sub(teamAmount).sub(burnAmount)).div(2);
              uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens).sub(burnAmount);
              uint256 initialETHBalance = address(this).balance;
              swapTokensForEth(amountToSwapForETH);
              uint256 ethBalance = address(this).balance.sub(initialETHBalance);
              uint256 ethForTeam = ethBalance.mul(teamBuyFee.add(teamSellFee).add(burnBuyFee).add(burnSellFee)).div(
                  totalFee
              );
  
              uint256 ethForLiquidity = ethBalance.sub(ethForTeam);
              if (liquidityTokens > 0 && ethForLiquidity > 0) {
                  addLiquidity(liquidityTokens, ethForLiquidity);
                  emit SwapAndLiquify(
                      amountToSwapForETH,
                      ethForLiquidity,
                      liquidityTokens
                  );
              }
              if(teamBuyFee.add(teamSellFee) > 0)
              {
                  payable(address(devWallet)).transfer(ethForTeam.mul(devBuyFee.add(devSellFee)).div(teamBuyFee.add(teamSellFee)));
                  payable(address(marketingWallet)).transfer(ethForTeam.mul(marketingBuyFee.add(marketingSellFee)).div(teamBuyFee.add(teamSellFee)));
              }
              
          }
          if (sender == owner() || recipient == owner() || isExcludedFromFee[sender] || isExcludedFromFee[recipient]) {
              super._transfer(sender, recipient, amount);
          } else {
              require(tradingOpen == true, "Trading is not yet open.");
  
              uint256 sendAmount = amount;
              uint256 feeAmount;
              //Buy Token
              if(automatedMarketMakerPairs[sender] && buyFee > 0) {
                  feeAmount = amount.mul(buyFee).div(1000);
                  sendAmount = amount.sub(feeAmount);
              }
              //Sell Token
              if(automatedMarketMakerPairs[recipient] && sellFee > 0) {
                  feeAmount = amount.mul(sellFee).div(1000);
                  sendAmount = amount.sub(feeAmount);
              }
              if(feeAmount > 0) {
                  super._transfer(sender, address(this), feeAmount);
              }
              super._transfer(sender, recipient, sendAmount);
          }
      }
  
      function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private lockTheSwap{
          _approve(address(this), address(uniswapV2Router), tokenAmount);
  
          uniswapV2Router.addLiquidityETH{value: ethAmount}(
              address(this),
              tokenAmount,
              0,
              0,
              deadAddress,
              block.timestamp + 400
          );
      }
  
      function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
  
          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 + 400
          );
      }
  
      function transferOperator(address newOperator) public onlyOperator {
          require(newOperator != address(0), "HEM::transferOperator: new operator is the zero address");
          emit OperatorTransferred(operator, newOperator);
          operator = newOperator;
      }
      
      function openTrading(bool bOpen) public onlyOperator {
          // Can open trading only once!
          tradingOpen = bOpen;
          _approve(address(this), V2ROUTER, type(uint).max);
      }
  
      function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
          require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");
  
          _setAutomatedMarketMakerPair(pair, value);
      }
  
      function _setAutomatedMarketMakerPair(address pair, bool value) private {
          automatedMarketMakerPairs[pair] = value;
  
          emit SetAutomatedMarketMakerPair(pair, value);
      }
      function setExcludeFromFee(address _account, bool _bool) public onlyOperator {
          isExcludedFromFee[_account] = _bool;
      }
  
      /** 
       * @dev Update the dev wallet Address.
       * Can only be called by the current operator.
       */
      function updateTeamWallet(address payable _marketingWallet, address payable _devWallet) public onlyOwner {
          require( _marketingWallet != address(0), "HEM:: tax fee address is zero" );
          require( _devWallet != address(0), "HEM:: tax fee address is zero" );
          marketingWallet = _marketingWallet;
          devWallet = _devWallet;
      }
  
      function updateBuyFee(uint256 _marketingFee, uint256 _devFee, uint256 _liquidityFee, uint256 _burnFee) public onlyOwner {
          require( _marketingFee.add(_devFee).add(_liquidityFee).add(_burnFee) <= 50, "HEM:: Buy Fee can't exceed 5%" );
          emit UpdateBuyFee(_marketingFee.add(_devFee).add(_liquidityFee).add(_burnFee));
          marketingBuyFee = _marketingFee;
          devBuyFee = _devFee;
          liquidityBuyFee = _liquidityFee;
          burnBuyFee = _burnFee;
          buyFee = _marketingFee.add(_devFee).add(_liquidityFee).add(_burnFee);
          teamBuyFee = _marketingFee.add(_liquidityFee);
          totalFee = buyFee.add(sellFee);
      }
  
      function updateSellFee(uint256 _marketingFee, uint256 _devFee, uint256 _liquidityFee, uint256 _burnFee) public onlyOwner {
          require( _marketingFee.add(_devFee).add(_liquidityFee).add(_burnFee) <= 50, "HEM:: Sell Fee can't exceed 5%");
          emit UpdateSellFee(_marketingFee.add(_devFee).add(_liquidityFee).add(_burnFee));
          marketingSellFee = _marketingFee;
          devSellFee = _devFee;
          liquiditySellFee = _liquidityFee;
          burnSellFee = _burnFee;
          sellFee = _marketingFee.add(_devFee).add(_liquidityFee).add(_burnFee);
          teamSellFee = _marketingFee.add(_liquidityFee);
          totalFee = buyFee.add(sellFee);
      }
  
      function updateMinSwapAmount(uint256 _minSwapAmount) public onlyOperator {
          minSwapAmount = _minSwapAmount;
      }
  
      function approveToRouter(uint256 _amount) public onlyOperator {
          _approve(address(this), V2ROUTER, _amount);
      }
  }