ETH Price: $2,151.56 (-0.14%)

Transaction Decoder

Block:
13674075 at Nov-24-2021 12:36:55 AM +UTC
Transaction Fee:
0.0215833815623808 ETH $46.44
Gas Used:
206,144 Gas / 104.7005082 Gwei

Emitted Events:

201 MXSToken.Transfer( from=0x6c22f2623c1938A56b913cC0003f6eF72bAc8B77, to=[Sender] 0xcaef249a7c886d1d73268abeba227568aa1eb1e2, value=2558834876543209876543210 )
202 0x6c22f2623c1938a56b913cc0003f6ef72bac8b77.0xfb81f9b30d73d830c3544b34d827c08142579ee75710b490bab0b3995468c565( 0xfb81f9b30d73d830c3544b34d827c08142579ee75710b490bab0b3995468c565, 00000000000000000000000000000000000000000040d3051e58f0108548d097 )
203 VestingRouter.VestingReleased( vestingAddress=0x6c22f2623c1938A56b913cC0003f6eF72bAc8B77, amount=2558834876543209876543210 )

Account State Difference:

  Address   Before After State Difference Code
0x6c22f262...72bAc8B77
0x8D95026D...103D21ABB
(Binance Pool)
788.335152577896699745 Eth788.335358721896699745 Eth0.000206144
0xCaEF249a...8aA1EB1e2
0.450899602996653346 Eth
Nonce: 24
0.429316221434272546 Eth
Nonce: 25
0.0215833815623808

Execution Trace

VestingRouter.release( _vestingAddress=0x6c22f2623c1938A56b913cC0003f6eF72bAc8B77 )
  • 0x6c22f2623c1938a56b913cc0003f6ef72bac8b77.STATICCALL( )
  • 0x6c22f2623c1938a56b913cc0003f6ef72bac8b77.STATICCALL( )
  • 0x6c22f2623c1938a56b913cc0003f6ef72bac8b77.CALL( )
    • MXSToken.transfer( recipient=0xCaEF249a7C886d1D73268Abeba227568aA1EB1e2, amount=2558834876543209876543210 ) => ( True )
    • MXSToken.balanceOf( account=0x6c22f2623c1938A56b913cC0003f6eF72bAc8B77 ) => ( 190094362331441607073513905 )
    • 0x6c22f2623c1938a56b913cc0003f6ef72bac8b77.STATICCALL( )
      File 1 of 2: VestingRouter
      pragma solidity ^0.8.0;
      import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
      import "@openzeppelin/contracts/access/Ownable.sol";
      import "./Vesting.sol";
      contract VestingRouter is Ownable, ReentrancyGuard {
          event VestingCreated(address indexed beneficiary, address indexed vestingAddress, uint256 tokenAmount);
          event VestingReleased(address indexed vestingAddress, uint256 amount);
          event VestingRevoked(address indexed vestingAddress);
          struct UserInfo {
              address activeVesting;
              address[] vestingHistory;
          }
         
          IERC20 immutable mxsToken;
          mapping(address => UserInfo) userVesting;
         
          constructor(address _token) {
              mxsToken = IERC20(_token);
          }
         
          function createVesting(address _beneficiary, uint256 _tokenAmount, uint256 _duration, uint256 _cliff, bool _revokable) external onlyOwner nonReentrant {
              require(userVesting[_beneficiary].activeVesting == address(0), "Address already has an active vesting contract");
              Vesting vestingContract = new Vesting(_beneficiary, block.timestamp, _cliff, _duration, _revokable, _tokenAmount, address(mxsToken));
              bool transferred = mxsToken.transfer(address(vestingContract), _tokenAmount);
              require(transferred, "Token transfer failed");
              userVesting[_beneficiary].activeVesting = address(vestingContract);
              userVesting[_beneficiary].vestingHistory.push(address(vestingContract));
              emit VestingCreated(_beneficiary, address(vestingContract), _tokenAmount);
          }
         
          function userInfo(address account) external view returns(address activeVesting, address[] memory vestingHistory) {
              UserInfo memory _userInfo = userVesting[account];
              return(_userInfo.activeVesting, _userInfo.vestingHistory);
          }
         
          function userVestingInfo(address _account) external view returns(
              address vestingAddress,
              uint256 releasedAmount,
              uint256 releasableAmount,
              uint256 vestedAmount,
              uint256 allocation,
              uint256 reflectionsReceived,
              uint256 timeRemaining,
              bool complete
          ) {
              return vestingInfo(userVesting[_account].activeVesting);
          }
         
          function vestingInfo(address _vestingAddress) public view returns (
              address vestingAddress,
              uint256 releasedAmount,
              uint256 releasableAmount,
              uint256 vestedAmount,
              uint256 allocation,
              uint256 reflectionsReceived,
              uint256 timeRemaining,
              bool complete
          ) {
              Vesting vestingContract = Vesting(_vestingAddress);
              vestingAddress = _vestingAddress;
              releasedAmount = vestingContract.released();
              releasableAmount = vestingContract.releasableAmount();
              vestedAmount = vestingContract.vestedAmount();
              allocation = vestingContract.initialAllocation();
              reflectionsReceived = vestingContract.reflections();
              timeRemaining = vestingContract.timeRemaining();
              complete = vestingContract.complete();
          }
         
          function revoke(address _vestingAddress) external onlyOwner {
              Vesting vestingContract = Vesting(_vestingAddress);
              require(address(vestingContract) != address(0), "Cannot release an invalid address");
              require(!vestingContract.complete(), "Vesting is already complete");
             
              vestingContract.revoke();
              userVesting[vestingContract.beneficiary()].activeVesting = address(0);
              emit VestingRevoked(_vestingAddress);
          }
         
          function release(address _vestingAddress) external {
              Vesting vestingContract = Vesting(_vestingAddress);
              require(address(vestingContract) != address(0), "Cannot release an invalid address");
              require(!vestingContract.complete(), "Vesting is already complete");
              require(vestingContract.beneficiary() == msg.sender, "Sender must be beneficiary");
              uint256 tokenAmount = vestingContract.release();
             
              if (vestingContract.complete()) {
                  userVesting[vestingContract.beneficiary()].activeVesting = address(0);
              }
              emit VestingReleased(_vestingAddress, tokenAmount);
          }
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.0;
      /**
       * @dev Interface of the ERC20 standard as defined in the EIP.
       */
      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);
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.0;
      import "../utils/Context.sol";
      /**
       * @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() {
              _setOwner(_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 {
              _setOwner(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");
              _setOwner(newOwner);
          }
          function _setOwner(address newOwner) private {
              address oldOwner = _owner;
              _owner = newOwner;
              emit OwnershipTransferred(oldOwner, newOwner);
          }
      }
      pragma solidity ^0.8.0;
      import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
      import "@openzeppelin/contracts/access/Ownable.sol";
      import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
      /**
      * @title TokenVesting
      * @dev A token holder contract that can release its token balance gradually like a
      * typical vesting scheme, with a cliff and vesting period. Optionally revocable by the
      * owner.
      */
      contract Vesting is Ownable, ReentrancyGuard {
        event Released(uint256 amount);
        event Revoked();
        // beneficiary of tokens after they are released
        address public immutable beneficiary;
        uint256 public immutable cliff;
        uint256 public immutable start;
        uint256 public immutable duration;
        uint256 public immutable initialAllocation;
       
        bool public immutable revokable;
        bool public revoked;
        bool public complete;
        uint256 public released;
        IERC20 public mxsToken;
        /**
         * @dev Creates a vesting contract that vests its balance of any ERC20 token to the
         * _beneficiary, gradually in a linear fashion until _start + _duration. By then all
         * of the balance will have vested.
         * @param _beneficiary address of the beneficiary to whom vested tokens are transferred
         * @param _cliff duration in seconds of the cliff in which tokens will begin to vest
         * @param _duration duration in seconds of the period in which the tokens will vest
         * @param _revokable whether the vesting is revocable or not
         ** @param _initialAllocation the initial allocation of tokens, used to find reflections
         */
        constructor(
          address _beneficiary,
          uint256 _start,
          uint256 _cliff,
          uint256 _duration,
          bool    _revokable,
          uint256 _initialAllocation,
          address _mxsToken
        ) {
          require(_beneficiary != address(0), "The beneficiary address is zero address");
          require(_cliff <= _duration, "The cliff is larger than duration");
         
          beneficiary = _beneficiary;
          start       = _start;
          cliff       = _start + _cliff;
          duration    = _duration;
          revokable   = _revokable;
          initialAllocation = _initialAllocation;
          mxsToken = IERC20(_mxsToken);
          bool approved = mxsToken.approve( owner(), type(uint256).max);
          require(approved, "Transfer token failed");
        }
        /**
         * @notice Transfers vested tokens to beneficiary.
         */
        function release() onlyOwner external returns(uint256 tokenAmount) {
          require(block.timestamp >= cliff, "Cliff has not been reached yet");
          tokenAmount = _releaseTo(beneficiary);
        }
        /**
         * @notice Transfers vested tokens to beneficiary.
         */
        function _releaseTo(address target) internal nonReentrant returns(uint256) {
          uint256 unreleased = releasableAmount();
          released = released + unreleased;
          
          bool transferred = mxsToken.transfer(target, unreleased);
          require(transferred, "Transfer token failed");
          if (mxsToken.balanceOf(address(this)) == 0) {
              complete = true;
          }
          emit Released(released);
          return(unreleased);
        }
        /**
         * @notice Allows the owner to revoke the vesting. Tokens already vested are sent to the beneficiary.
         */
        function revoke() onlyOwner external {
          require(revokable, "It's not revokable");
          require(!revoked, "It's already revoked");
          // Release all vested tokens
          _releaseTo(beneficiary);
          // Send the remainder to the owner
          bool transferred = mxsToken.transfer(owner(), mxsToken.balanceOf(address(this)));
          require(transferred, "Transfer token failed");
          revoked = true;
          complete = true;
          emit Revoked();
        }
        /**
         * @dev Calculates the amount that has already vested but hasn't been released yet.
         */
        function releasableAmount() public view returns (uint256) {
          return vestedAmount() - released;
        }
        /**
         * @dev Calculates the amount that has already vested.
         */
        function vestedAmount() public view returns (uint256) {
          if (block.timestamp < cliff) {
            return 0;
          } else if (block.timestamp >= start + duration || revoked) {
            uint256 vested = mxsToken.balanceOf(address(this)) + released;
            // vesting is complete, allocate all tokens
            return vested;
          } else {
            uint256 vested = initialAllocation * (block.timestamp - start) / duration;
            return vested;
          }
        }
       
          /**
         * @dev Calculates the amount of reflections the vesting contract has received.
         */
        function reflections() external view returns (uint256) {
          return mxsToken.balanceOf(address(this)) + released - initialAllocation;
        }
          /**
         * @dev Calculates the amount of time remaining in seconds.
         */
        function timeRemaining() external view returns (uint256) {
            return start + duration - block.timestamp;
        }
       
        /**
         * @notice Allow withdrawing any token other than the relevant one
         */
        function releaseForeignToken(IERC20 _token, uint256 amount) external onlyOwner {
          require(_token != mxsToken, "The token is mxsToken");
          bool transferred = _token.transfer(owner(), amount);
          require(transferred, "Transfer token failed");
        }
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.0;
      /*
       * @dev Provides information about the current execution context, including the
       * sender of the transaction and its data. While these are generally available
       * via msg.sender and msg.data, they should not be accessed in such a direct
       * manner, since when dealing with meta-transactions the account sending and
       * paying for execution may not be the actual sender (as far as an application
       * is concerned).
       *
       * This contract is only required for intermediate, library-like contracts.
       */
      abstract contract Context {
          function _msgSender() internal view virtual returns (address) {
              return msg.sender;
          }
          function _msgData() internal view virtual returns (bytes calldata) {
              return msg.data;
          }
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.0;
      /**
       * @dev Contract module that helps prevent reentrant calls to a function.
       *
       * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
       * available, which can be applied to functions to make sure there are no nested
       * (reentrant) calls to them.
       *
       * Note that because there is a single `nonReentrant` guard, functions marked as
       * `nonReentrant` may not call one another. This can be worked around by making
       * those functions `private`, and then adding `external` `nonReentrant` entry
       * points to them.
       *
       * TIP: If you would like to learn more about reentrancy and alternative ways
       * to protect against it, check out our blog post
       * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
       */
      abstract contract ReentrancyGuard {
          // Booleans are more expensive than uint256 or any type that takes up a full
          // word because each write operation emits an extra SLOAD to first read the
          // slot's contents, replace the bits taken up by the boolean, and then write
          // back. This is the compiler's defense against contract upgrades and
          // pointer aliasing, and it cannot be disabled.
          // The values being non-zero value makes deployment a bit more expensive,
          // but in exchange the refund on every call to nonReentrant will be lower in
          // amount. Since refunds are capped to a percentage of the total
          // transaction's gas, it is best to keep them low in cases like this one, to
          // increase the likelihood of the full refund coming into effect.
          uint256 private constant _NOT_ENTERED = 1;
          uint256 private constant _ENTERED = 2;
          uint256 private _status;
          constructor() {
              _status = _NOT_ENTERED;
          }
          /**
           * @dev Prevents a contract from calling itself, directly or indirectly.
           * Calling a `nonReentrant` function from another `nonReentrant`
           * function is not supported. It is possible to prevent this from happening
           * by making the `nonReentrant` function external, and make it call a
           * `private` function that does the actual work.
           */
          modifier nonReentrant() {
              // On the first call to nonReentrant, _notEntered will be true
              require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
              // Any calls to nonReentrant after this point will fail
              _status = _ENTERED;
              _;
              // By storing the original value once again, a refund is triggered (see
              // https://eips.ethereum.org/EIPS/eip-2200)
              _status = _NOT_ENTERED;
          }
      }
      

      File 2 of 2: MXSToken
      pragma solidity ^0.8.0;
      import "@openzeppelin/contracts/utils/math/SafeMath.sol";
      import "@openzeppelin/contracts/utils/Address.sol";
      import "@openzeppelin/contracts/access/Ownable.sol";
      import '@uniswap/v2-core/contracts/interfaces/IUniswapV2Pair.sol';
      import '@uniswap/v2-core/contracts/interfaces/IERC20.sol';
      import '@uniswap/v2-core/contracts/interfaces/IUniswapV2Factory.sol';
      import '@uniswap/v2-periphery/contracts/interfaces/IUniswapV2Router02.sol';
      contract MXSToken is Context, IERC20, Ownable {
          using SafeMath for uint256;
          using Address for address;
          event ExcludeFromRewards(address indexed _address);
          event IncludeInRewards(address indexed _address);
          event ExcludeFromFee(address indexed _address);
          event IncludeInFee(address indexed _address);
          event ExcludeFromPreTrading(address indexed _address);
          event IncludeInPreTrading(address indexed _address);
          event TaxPercentUpdated(uint256 amount);
          event CommunityPercentUpdated(uint256 amount);
          event MaxTxUpdated(uint256 amount);
          event CommunityWalletUpdated(address indexed _address);
          mapping (address => uint256) private _rOwned;
          mapping (address => uint256) private _tOwned;
          mapping (address => mapping (address => uint256)) private _allowances;
          mapping (address => bool) private _isExcludedFromFee;
          mapping (address => bool) private _isExcludedFromReward;
          
          address[] private _excluded;
        
          uint256 private constant MAX = ~uint256(0);
          uint256 private constant _tTotal = 100000000000 * 10 ** 18;
          uint256 private _rTotal = (MAX - (MAX % _tTotal));
          uint256 private _tFeeTotal;
          uint256 private _tCommunityTotal;
          string private constant _name = "Marketing Samurai";
          string private constant _symbol = "MXS";
          uint8 private constant _decimals = 18;
          uint256 public _taxFee = 6;
          uint256 private _previousTaxFee = _taxFee;
            
          uint256 public _communityFee = 3;
          uint256 private _previousCommunityFee = _communityFee;
          uint256 public _maxTxAmount = 1000000 * 10 ** 18;
          address public communityAddress = 0x94f6153EbfEB633E9321f9F31Ed19E649239d7DF;
              
          IUniswapV2Router02 public uniswapV2Router;
          address public uniswapV2Pair;
          uint256 private tradingStartTime = 1640966414;
          mapping(address => bool) private canTransferBeforeTradingIsEnabled;
         
          constructor (address uniswapRouter) {
              _rOwned[_msgSender()] = _rTotal;
             
              IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(uniswapRouter);
              uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
              uniswapV2Router = _uniswapV2Router;
              
              _isExcludedFromFee[owner()] = true;
              _isExcludedFromFee[address(this)] = true;
              _isExcludedFromFee[communityAddress] = true;
              
              _isExcludedFromReward[uniswapV2Pair] = true;
              
              canTransferBeforeTradingIsEnabled[owner()] = true;
              
              emit Transfer(address(0), _msgSender(), _tTotal);
          }
          function name() external view override returns (string memory) {
              return _name;
          }
          function symbol() external view override returns (string memory) {
              return _symbol;
          }
          function decimals() external view override returns (uint8) {
              return _decimals;
          }
          function totalSupply() external view override returns (uint256) {
              return _tTotal;
          }
          function balanceOf(address account) external view override returns (uint256) {
              if (_isExcludedFromReward[account]) return _tOwned[account];
              return tokenFromReflection(_rOwned[account]);
          }
          function transfer(address recipient, uint256 amount) external override returns (bool) {
              _transfer(_msgSender(), recipient, amount);
              return true;
          }
          function allowance(address owner, address spender) external view override returns (uint256) {
              return _allowances[owner][spender];
          }
          function approve(address spender, uint256 amount) external override returns (bool) {
              _approve(_msgSender(), spender, amount);
              return true;
          }
          function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
              _transfer(sender, recipient, amount);
              _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
              return true;
          }
          function increaseAllowance(address spender, uint256 addedValue) external virtual returns (bool) {
              _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
              return true;
          }
          function decreaseAllowance(address spender, uint256 subtractedValue) external virtual returns (bool) {
              _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
              return true;
          }
          function isExcludedFromReward(address account) external view returns (bool) {
              return _isExcludedFromReward[account];
          }
          function totalFees() external view returns (uint256) {
              return _tFeeTotal;
          }
            
          function totalCommunityRewards() external view returns (uint256) {
              return _tCommunityTotal;
          }
          function deliver(uint256 tAmount) external {
              address sender = _msgSender();
              require(!_isExcludedFromReward[sender], "Excluded addresses cannot call this function");
              (uint256 rAmount,,,,,) = _getValues(tAmount);
              _rOwned[sender] = _rOwned[sender].sub(rAmount);
              _rTotal = _rTotal.sub(rAmount);
              _tFeeTotal = _tFeeTotal.add(tAmount);
          }
       
          function reflectionFromToken(uint256 tAmount, bool deductTransferFee) external view returns(uint256) {
              require(tAmount <= _tTotal, "Amount must be less than supply");
              if (!deductTransferFee) {
                  (uint256 rAmount,,,,,) = _getValues(tAmount);
                  return rAmount;
              } else {
                  (,uint256 rTransferAmount,,,,) = _getValues(tAmount);
                  return rTransferAmount;
              }
          }
          function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
              require(rAmount <= _rTotal, "Amount must be less than total reflections");
              uint256 currentRate =  _getRate();
              return rAmount.div(currentRate);
          }
          function excludeFromReward(address account) public onlyOwner() {
              require(!_isExcludedFromReward[account], "Account is already excluded");
              if(_rOwned[account] > 0) {
                  _tOwned[account] = tokenFromReflection(_rOwned[account]);
              }
              _isExcludedFromReward[account] = true;
              _excluded.push(account);
          }
          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 _transfer(
              address from,
              address to,
              uint256 amount
          ) private {
              require(from != address(0), "ERC20: transfer from the zero address");
              require(to != address(0), "ERC20: transfer to the zero address");
              require(amount > 0, "Transfer amount must be greater than zero");
              // address must be permitted to transfer before tradingStartTime
              if(tradingStartTime > block.timestamp) {
                  require(canTransferBeforeTradingIsEnabled[from], "This account cannot send tokens until trading is enabled");
              }
              if (from != owner() && to != owner()) {
                  require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
              }
              
              bool takeFee = true;
              
              // if any account belongs to _isExcludedFromFee account then remove the fee
              // do not take fee if wallet to wallet transfer ( to / from uniswap)
              if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (to != uniswapV2Pair && from != uniswapV2Pair)) {
                  takeFee = false;
              }
             
              _tokenTransfer(from,to,amount,takeFee);
          }
          function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private {
              if(!takeFee)
                  removeAllFee();
             
              if (_isExcludedFromReward[sender] && !_isExcludedFromReward[recipient]) {
                  _transferFromExcluded(sender, recipient, amount);
              } else if (!_isExcludedFromReward[sender] && _isExcludedFromReward[recipient]) {
                  _transferToExcluded(sender, recipient, amount);
              } else if (_isExcludedFromReward[sender] && _isExcludedFromReward[recipient]) {
                  _transferBothExcluded(sender, recipient, amount);
              } else {
                  _transferStandard(sender, recipient, amount);
              }
             
              if(!takeFee)
                  restoreAllFee();
          }
          function _transferStandard(address sender, address recipient, uint256 tAmount) private {
              (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tCommunity) = _getValues(tAmount);
              _rOwned[sender] = _rOwned[sender].sub(rAmount);
              _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
              _takeCommunity(tCommunity);
              _reflectFee(rFee, tFee);
              emit Transfer(sender, recipient, tTransferAmount);
          }
          function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
              (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tCommunity) = _getValues(tAmount);
              _rOwned[sender] = _rOwned[sender].sub(rAmount);
              _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
              _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);          
              _takeCommunity(tCommunity);
              _reflectFee(rFee, tFee);
              emit Transfer(sender, recipient, tTransferAmount);
          }
          function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
              (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tCommunity) = _getValues(tAmount);
              _tOwned[sender] = _tOwned[sender].sub(tAmount);
              _rOwned[sender] = _rOwned[sender].sub(rAmount);
              _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);  
              _takeCommunity(tCommunity);
              _reflectFee(rFee, tFee);
              emit Transfer(sender, recipient, tTransferAmount);
          }
          function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
              (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tCommunity) = _getValues(tAmount);
              _tOwned[sender] = _tOwned[sender].sub(tAmount);
              _rOwned[sender] = _rOwned[sender].sub(rAmount);
              _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
              _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);       
              _takeCommunity(tCommunity);
              _reflectFee(rFee, tFee);
              emit Transfer(sender, recipient, tTransferAmount);
          }
          function _reflectFee(uint256 rFee, uint256 tFee) private {
              _rTotal = _rTotal.sub(rFee);
              _tFeeTotal = _tFeeTotal.add(tFee);
          }
          function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
              (uint256 tTransferAmount, uint256 tFee, uint256 tCommunity) = _getTValues(tAmount);
              (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tCommunity, _getRate());
              return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tCommunity);
          }
          function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) {
              uint256 tFee = calculateTaxFee(tAmount);
              uint256 tCommunity = calculateCommunityFee(tAmount);
              uint256 tTransferAmount = tAmount.sub(tFee).sub(tCommunity);
              return (tTransferAmount, tFee, tCommunity);
          }
          function _getRValues(uint256 tAmount, uint256 tFee, uint256 tCommunity, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
              uint256 rAmount = tAmount.mul(currentRate);
              uint256 rFee = tFee.mul(currentRate);
              uint256 rCommunity = tCommunity.mul(currentRate);
              uint256 rTransferAmount = rAmount.sub(rFee).sub(rCommunity);
              return (rAmount, rTransferAmount, rFee);
          }
          function _getRate() private view returns(uint256) {
              (uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
              return rSupply.div(tSupply);
          }
          function _getCurrentSupply() private view returns(uint256, uint256) {
              uint256 rSupply = _rTotal;
              uint256 tSupply = _tTotal;     
              for (uint256 i = 0; i < _excluded.length; i++) {
                  if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
                  rSupply = rSupply.sub(_rOwned[_excluded[i]]);
                  tSupply = tSupply.sub(_tOwned[_excluded[i]]);
              }
              if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
              return (rSupply, tSupply);
          }
         
          function _takeCommunity(uint256 tCommunity) private {
              uint256 currentRate =  _getRate();
              uint256 rCommunity = tCommunity.mul(currentRate);
              _rOwned[communityAddress] = _rOwned[communityAddress].add(rCommunity);
              _tCommunityTotal = _tCommunityTotal.add(tCommunity);
              if(_isExcludedFromReward[communityAddress])
                  _tOwned[communityAddress] = _tOwned[communityAddress].add(tCommunity);
          }
          function calculateTaxFee(uint256 _amount) private view returns (uint256) {
              return _amount.mul(_taxFee).div(100);
          }
            
          function calculateCommunityFee(uint256 _amount) private view returns (uint256) {
              return _amount.mul(_communityFee).div(100);
          }
          function removeAllFee() private {
              if(_taxFee == 0 && _communityFee == 0) return;
             
              _previousTaxFee = _taxFee;
              _previousCommunityFee = _communityFee;
              _taxFee = 0;
              _communityFee = 0;
          }
         
          function restoreAllFee() private {
              _taxFee = _previousTaxFee;
              _communityFee = _previousCommunityFee;
          }
          function isExcludedFromFee(address account) external view returns(bool) {
              return _isExcludedFromFee[account];
          }
         
          function excludeFromFee(address account) external onlyOwner {
              _isExcludedFromFee[account] = true;
              emit ExcludeFromFee(account);
          }
         
          function includeInFee(address account) external onlyOwner {
              _isExcludedFromFee[account] = false;
              emit IncludeInFee(account);
          }
          
          function setTaxFeePercent(uint256 taxFee) external onlyOwner() {
              require(taxFee < 20, "Invalid tax fee");
              _taxFee = taxFee;
              emit TaxPercentUpdated(taxFee);
          }
            
          function setCommunityFeePercent(uint256 communityFee) external onlyOwner() {
              require(communityFee < 20, "Invalid community fee");
              _communityFee = communityFee;
              emit CommunityPercentUpdated(communityFee);
          }
          function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
              require(maxTxAmount > 0, "Invalid Max Transaction");
              _maxTxAmount = maxTxAmount;
              emit MaxTxUpdated(maxTxAmount);
          }
          
          function setCommunityWallet(address _address) external onlyOwner {
              communityAddress = _address;
              emit CommunityWalletUpdated(_address);
          }
          function setTradingStartTime(uint256 newStartTime) external onlyOwner {
             require(tradingStartTime > block.timestamp, "Trading has already started");
             require(newStartTime > block.timestamp, "Start time must be in the future");
             tradingStartTime = newStartTime;
          }
          
          function allowPreTrading(address account, bool allowed) external onlyOwner {
              // used for owner and pre sale addresses
              require(canTransferBeforeTradingIsEnabled[account] != allowed, "Pre trading is already the value of 'excluded'");
              canTransferBeforeTradingIsEnabled[account] = allowed;
              if (allowed) {
                  emit ExcludeFromPreTrading(account);
              } else {
                  emit IncludeInPreTrading(account);
              }
          }
      }// SPDX-License-Identifier: MIT
      pragma solidity ^0.8.0;
      // CAUTION
      // This version of SafeMath should only be used with Solidity 0.8 or later,
      // because it relies on the compiler's built in overflow checks.
      /**
       * @dev Wrappers over Solidity's arithmetic operations.
       *
       * NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
       * now has built in overflow checking.
       */
      library SafeMath {
          /**
           * @dev Returns the addition of two unsigned integers, with an overflow flag.
           *
           * _Available since v3.4._
           */
          function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
              unchecked {
                  uint256 c = a + b;
                  if (c < a) return (false, 0);
                  return (true, c);
              }
          }
          /**
           * @dev Returns the substraction of two unsigned integers, with an overflow flag.
           *
           * _Available since v3.4._
           */
          function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
              unchecked {
                  if (b > a) return (false, 0);
                  return (true, a - b);
              }
          }
          /**
           * @dev Returns the multiplication of two unsigned integers, with an overflow flag.
           *
           * _Available since v3.4._
           */
          function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
              unchecked {
                  // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
                  // benefit is lost if 'b' is also tested.
                  // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
                  if (a == 0) return (true, 0);
                  uint256 c = a * b;
                  if (c / a != b) return (false, 0);
                  return (true, c);
              }
          }
          /**
           * @dev Returns the division of two unsigned integers, with a division by zero flag.
           *
           * _Available since v3.4._
           */
          function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
              unchecked {
                  if (b == 0) return (false, 0);
                  return (true, a / b);
              }
          }
          /**
           * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
           *
           * _Available since v3.4._
           */
          function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
              unchecked {
                  if (b == 0) return (false, 0);
                  return (true, a % b);
              }
          }
          /**
           * @dev Returns the addition of two unsigned integers, reverting on
           * overflow.
           *
           * Counterpart to Solidity's `+` operator.
           *
           * Requirements:
           *
           * - Addition cannot overflow.
           */
          function add(uint256 a, uint256 b) internal pure returns (uint256) {
              return a + b;
          }
          /**
           * @dev Returns the subtraction of two unsigned integers, reverting on
           * overflow (when the result is negative).
           *
           * Counterpart to Solidity's `-` operator.
           *
           * Requirements:
           *
           * - Subtraction cannot overflow.
           */
          function sub(uint256 a, uint256 b) internal pure returns (uint256) {
              return a - b;
          }
          /**
           * @dev Returns the multiplication of two unsigned integers, reverting on
           * overflow.
           *
           * Counterpart to Solidity's `*` operator.
           *
           * Requirements:
           *
           * - Multiplication cannot overflow.
           */
          function mul(uint256 a, uint256 b) internal pure returns (uint256) {
              return a * b;
          }
          /**
           * @dev Returns the integer division of two unsigned integers, reverting on
           * division by zero. The result is rounded towards zero.
           *
           * Counterpart to Solidity's `/` operator.
           *
           * Requirements:
           *
           * - The divisor cannot be zero.
           */
          function div(uint256 a, uint256 b) internal pure returns (uint256) {
              return a / b;
          }
          /**
           * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
           * reverting when dividing by zero.
           *
           * Counterpart to Solidity's `%` operator. This function uses a `revert`
           * opcode (which leaves remaining gas untouched) while Solidity uses an
           * invalid opcode to revert (consuming all remaining gas).
           *
           * Requirements:
           *
           * - The divisor cannot be zero.
           */
          function mod(uint256 a, uint256 b) internal pure returns (uint256) {
              return a % b;
          }
          /**
           * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
           * overflow (when the result is negative).
           *
           * CAUTION: This function is deprecated because it requires allocating memory for the error
           * message unnecessarily. For custom revert reasons use {trySub}.
           *
           * Counterpart to Solidity's `-` operator.
           *
           * Requirements:
           *
           * - Subtraction cannot overflow.
           */
          function sub(
              uint256 a,
              uint256 b,
              string memory errorMessage
          ) internal pure returns (uint256) {
              unchecked {
                  require(b <= a, errorMessage);
                  return a - b;
              }
          }
          /**
           * @dev Returns the integer division of two unsigned integers, reverting with custom message on
           * division by zero. The result is rounded towards zero.
           *
           * Counterpart to Solidity's `/` operator. Note: this function uses a
           * `revert` opcode (which leaves remaining gas untouched) while Solidity
           * uses an invalid opcode to revert (consuming all remaining gas).
           *
           * Requirements:
           *
           * - The divisor cannot be zero.
           */
          function div(
              uint256 a,
              uint256 b,
              string memory errorMessage
          ) internal pure returns (uint256) {
              unchecked {
                  require(b > 0, errorMessage);
                  return a / b;
              }
          }
          /**
           * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
           * reverting with custom message when dividing by zero.
           *
           * CAUTION: This function is deprecated because it requires allocating memory for the error
           * message unnecessarily. For custom revert reasons use {tryMod}.
           *
           * Counterpart to Solidity's `%` operator. This function uses a `revert`
           * opcode (which leaves remaining gas untouched) while Solidity uses an
           * invalid opcode to revert (consuming all remaining gas).
           *
           * Requirements:
           *
           * - The divisor cannot be zero.
           */
          function mod(
              uint256 a,
              uint256 b,
              string memory errorMessage
          ) internal pure returns (uint256) {
              unchecked {
                  require(b > 0, errorMessage);
                  return a % b;
              }
          }
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.0;
      /**
       * @dev Collection of functions related to the address type
       */
      library Address {
          /**
           * @dev Returns true if `account` is a contract.
           *
           * [IMPORTANT]
           * ====
           * It is unsafe to assume that an address for which this function returns
           * false is an externally-owned account (EOA) and not a contract.
           *
           * Among others, `isContract` will return false for the following
           * types of addresses:
           *
           *  - an externally-owned account
           *  - a contract in construction
           *  - an address where a contract will be created
           *  - an address where a contract lived, but was destroyed
           * ====
           */
          function isContract(address account) internal view returns (bool) {
              // This method relies on extcodesize, which returns 0 for contracts in
              // construction, since the code is only stored at the end of the
              // constructor execution.
              uint256 size;
              assembly {
                  size := extcodesize(account)
              }
              return size > 0;
          }
          /**
           * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
           * `recipient`, forwarding all available gas and reverting on errors.
           *
           * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
           * of certain opcodes, possibly making contracts go over the 2300 gas limit
           * imposed by `transfer`, making them unable to receive funds via
           * `transfer`. {sendValue} removes this limitation.
           *
           * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
           *
           * IMPORTANT: because control is transferred to `recipient`, care must be
           * taken to not create reentrancy vulnerabilities. Consider using
           * {ReentrancyGuard} or the
           * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
           */
          function sendValue(address payable recipient, uint256 amount) internal {
              require(address(this).balance >= amount, "Address: insufficient balance");
              (bool success, ) = recipient.call{value: amount}("");
              require(success, "Address: unable to send value, recipient may have reverted");
          }
          /**
           * @dev Performs a Solidity function call using a low level `call`. A
           * plain `call` is an unsafe replacement for a function call: use this
           * function instead.
           *
           * If `target` reverts with a revert reason, it is bubbled up by this
           * function (like regular Solidity function calls).
           *
           * Returns the raw returned data. To convert to the expected return value,
           * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
           *
           * Requirements:
           *
           * - `target` must be a contract.
           * - calling `target` with `data` must not revert.
           *
           * _Available since v3.1._
           */
          function functionCall(address target, bytes memory data) internal returns (bytes memory) {
              return functionCall(target, data, "Address: low-level call failed");
          }
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
           * `errorMessage` as a fallback revert reason when `target` reverts.
           *
           * _Available since v3.1._
           */
          function functionCall(
              address target,
              bytes memory data,
              string memory errorMessage
          ) internal returns (bytes memory) {
              return functionCallWithValue(target, data, 0, errorMessage);
          }
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
           * but also transferring `value` wei to `target`.
           *
           * Requirements:
           *
           * - the calling contract must have an ETH balance of at least `value`.
           * - the called Solidity function must be `payable`.
           *
           * _Available since v3.1._
           */
          function functionCallWithValue(
              address target,
              bytes memory data,
              uint256 value
          ) internal returns (bytes memory) {
              return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
          }
          /**
           * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
           * with `errorMessage` as a fallback revert reason when `target` reverts.
           *
           * _Available since v3.1._
           */
          function functionCallWithValue(
              address target,
              bytes memory data,
              uint256 value,
              string memory errorMessage
          ) internal returns (bytes memory) {
              require(address(this).balance >= value, "Address: insufficient balance for call");
              require(isContract(target), "Address: call to non-contract");
              (bool success, bytes memory returndata) = target.call{value: value}(data);
              return _verifyCallResult(success, returndata, errorMessage);
          }
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
           * but performing a static call.
           *
           * _Available since v3.3._
           */
          function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
              return functionStaticCall(target, data, "Address: low-level static call failed");
          }
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
           * but performing a static call.
           *
           * _Available since v3.3._
           */
          function functionStaticCall(
              address target,
              bytes memory data,
              string memory errorMessage
          ) internal view returns (bytes memory) {
              require(isContract(target), "Address: static call to non-contract");
              (bool success, bytes memory returndata) = target.staticcall(data);
              return _verifyCallResult(success, returndata, errorMessage);
          }
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
           * but performing a delegate call.
           *
           * _Available since v3.4._
           */
          function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
              return functionDelegateCall(target, data, "Address: low-level delegate call failed");
          }
          /**
           * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
           * but performing a delegate call.
           *
           * _Available since v3.4._
           */
          function functionDelegateCall(
              address target,
              bytes memory data,
              string memory errorMessage
          ) internal returns (bytes memory) {
              require(isContract(target), "Address: delegate call to non-contract");
              (bool success, bytes memory returndata) = target.delegatecall(data);
              return _verifyCallResult(success, returndata, errorMessage);
          }
          function _verifyCallResult(
              bool success,
              bytes memory returndata,
              string memory errorMessage
          ) private pure returns (bytes memory) {
              if (success) {
                  return returndata;
              } else {
                  // Look for revert reason and bubble it up if present
                  if (returndata.length > 0) {
                      // The easiest way to bubble the revert reason is using memory via assembly
                      assembly {
                          let returndata_size := mload(returndata)
                          revert(add(32, returndata), returndata_size)
                      }
                  } else {
                      revert(errorMessage);
                  }
              }
          }
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.0;
      import "../utils/Context.sol";
      /**
       * @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() {
              _setOwner(_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 {
              _setOwner(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");
              _setOwner(newOwner);
          }
          function _setOwner(address newOwner) private {
              address oldOwner = _owner;
              _owner = newOwner;
              emit OwnershipTransferred(oldOwner, newOwner);
          }
      }
      pragma solidity >=0.5.0;
      interface IUniswapV2Pair {
          event Approval(address indexed owner, address indexed spender, uint value);
          event Transfer(address indexed from, address indexed to, uint value);
          function name() external pure returns (string memory);
          function symbol() external pure returns (string memory);
          function decimals() external pure returns (uint8);
          function totalSupply() external view returns (uint);
          function balanceOf(address owner) external view returns (uint);
          function allowance(address owner, address spender) external view returns (uint);
          function approve(address spender, uint value) external returns (bool);
          function transfer(address to, uint value) external returns (bool);
          function transferFrom(address from, address to, uint value) external returns (bool);
          function DOMAIN_SEPARATOR() external view returns (bytes32);
          function PERMIT_TYPEHASH() external pure returns (bytes32);
          function nonces(address owner) external view returns (uint);
          function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
          event Mint(address indexed sender, uint amount0, uint amount1);
          event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
          event Swap(
              address indexed sender,
              uint amount0In,
              uint amount1In,
              uint amount0Out,
              uint amount1Out,
              address indexed to
          );
          event Sync(uint112 reserve0, uint112 reserve1);
          function MINIMUM_LIQUIDITY() external pure returns (uint);
          function factory() external view returns (address);
          function token0() external view returns (address);
          function token1() external view returns (address);
          function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
          function price0CumulativeLast() external view returns (uint);
          function price1CumulativeLast() external view returns (uint);
          function kLast() external view returns (uint);
          function mint(address to) external returns (uint liquidity);
          function burn(address to) external returns (uint amount0, uint amount1);
          function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
          function skim(address to) external;
          function sync() external;
          function initialize(address, address) external;
      }
      pragma solidity >=0.5.0;
      interface IERC20 {
          event Approval(address indexed owner, address indexed spender, uint value);
          event Transfer(address indexed from, address indexed to, uint value);
          function name() external view returns (string memory);
          function symbol() external view returns (string memory);
          function decimals() external view 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);
      }
      pragma solidity >=0.5.0;
      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;
      }
      pragma solidity >=0.6.2;
      import './IUniswapV2Router01.sol';
      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;
      }
      // SPDX-License-Identifier: MIT
      pragma solidity ^0.8.0;
      /*
       * @dev Provides information about the current execution context, including the
       * sender of the transaction and its data. While these are generally available
       * via msg.sender and msg.data, they should not be accessed in such a direct
       * manner, since when dealing with meta-transactions the account sending and
       * paying for execution may not be the actual sender (as far as an application
       * is concerned).
       *
       * This contract is only required for intermediate, library-like contracts.
       */
      abstract contract Context {
          function _msgSender() internal view virtual returns (address) {
              return msg.sender;
          }
          function _msgData() internal view virtual returns (bytes calldata) {
              return msg.data;
          }
      }
      pragma solidity >=0.6.2;
      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);
      }