// SPDX-License-Identifier: Unlicensed
//https://t.me/Nadainu
pragma solidity ^0.6.12;
    abstract contract Context {
        function _msgSender() internal view virtual returns (address payable) {
            return msg.sender;
        }
        function _msgData() internal view virtual returns (bytes memory) {
            this;
             msg.data;
        }
    }
    interface IERC20 {
        function totalSupply() external view returns (uint256);
        function balanceOf(address account) external view returns (uint256);
        function transfer(address recipient, uint256 amount) external returns (bool);
        function allowance(address owner, address spender) external view returns (uint256);
        function approve(address spender, uint256 amount) external returns (bool);
        function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
        event Transfer(address indexed from, address indexed to, uint256 value);
        event Approval(address indexed owner, address indexed spender, uint256 value);
    }

    library SafeMath {
        /**
        * @dev Returns the addition of two unsigned integers, reverting on
        * overflow.
        *
        * Counterpart to Solidity's `+` operator.
        *
        * Requirements:
        *
        * - Addition cannot overflow.
        */
        function add(uint256 a, uint256 b) internal pure returns (uint256) {
            uint256 c = a + b;
            require(c >= a, "SafeMath: addition overflow");

            return c;
        }

        /**
        * @dev Returns the subtraction of two unsigned integers, reverting on
        * overflow (when the result is negative).
        *
        * Counterpart to Solidity's `-` operator.
        *
        * Requirements:
        *
        * - Subtraction cannot overflow.
        */
        function sub(uint256 a, uint256 b) internal pure returns (uint256) {
            return sub(a, b, "SafeMath: subtraction overflow");
        }

        /**
        * @dev Returns the subtraction of two unsigned integers, reverting with custom message on
        * overflow (when the result is negative).
        *
        * Counterpart to Solidity's `-` operator.
        *
        * Requirements:
        *
        * - Subtraction cannot overflow.
        */
        function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
            require(b <= a, errorMessage);
            uint256 c = a - b;

            return c;
        }

        /**
        * @dev Returns the multiplication of two unsigned integers, reverting on
        * overflow.
        *
        * Counterpart to Solidity's `*` operator.
        *
        * Requirements:
        *
        * - Multiplication cannot overflow.
        */
        function mul(uint256 a, uint256 b) internal pure returns (uint256) {
            // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
            // benefit is lost if 'b' is also tested.
            // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
            if (a == 0) {
                return 0;
            }

            uint256 c = a * b;
            require(c / a == b, "SafeMath: multiplication overflow");

            return c;
        }

        /**
        * @dev Returns the integer division of two unsigned integers. Reverts on
        * division by zero. The result is rounded towards zero.
        *
        * Counterpart to Solidity's `/` operator. Note: this function uses a
        * `revert` opcode (which leaves remaining gas untouched) while Solidity
        * uses an invalid opcode to revert (consuming all remaining gas).
        *
        * Requirements:
        *
        * - The divisor cannot be zero.
        */
        function div(uint256 a, uint256 b) internal pure returns (uint256) {
            return div(a, b, "SafeMath: division by zero");
        }

        /**
        * @dev Returns the integer division of two unsigned integers. Reverts with custom message on
        * division by zero. The result is rounded towards zero.
        *
        * Counterpart to Solidity's `/` operator. Note: this function uses a
        * `revert` opcode (which leaves remaining gas untouched) while Solidity
        * uses an invalid opcode to revert (consuming all remaining gas).
        *
        * Requirements:
        *
        * - The divisor cannot be zero.
        */
        function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
            require(b > 0, errorMessage);
            uint256 c = a / b;
            // assert(a == b * c + a % b); // There is no case in which this doesn't hold

            return c;
        }

        /**
        * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
        * Reverts when dividing by zero.
        *
        * Counterpart to Solidity's `%` operator. This function uses a `revert`
        * opcode (which leaves remaining gas untouched) while Solidity uses an
        * invalid opcode to revert (consuming all remaining gas).
        *
        * Requirements:
        *
        * - The divisor cannot be zero.
        */
        function mod(uint256 a, uint256 b) internal pure returns (uint256) {
            return mod(a, b, "SafeMath: modulo by zero");
        }

        /**
        * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
        * Reverts with custom message when dividing by zero.
        *
        * Counterpart to Solidity's `%` operator. This function uses a `revert`
        * opcode (which leaves remaining gas untouched) while Solidity uses an
        * invalid opcode to revert (consuming all remaining gas).
        *
        * Requirements:
        *
        * - The divisor cannot be zero.
        */
        function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
            require(b != 0, errorMessage);
            return a % b;
        }
    }

    library Address {
        function isContract(address account) internal view returns (bool) {
            bytes32 codehash;
            bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
            assembly { codehash := extcodehash(account) }
            return (codehash != accountHash && codehash != 0x0);
        }
        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");
        }
        function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCall(target, data, "Address: low-level call failed");
        }
        function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
            return _functionCallWithValue(target, data, 0, errorMessage);
        }
        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");
        }
        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");
            return _functionCallWithValue(target, data, value, errorMessage);
        }

        function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
            require(isContract(target), "Address: call to non-contract");
            (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
            if (success) {
                return returndata;
            } else {
                if (returndata.length > 0) {
                    assembly {
                        let returndata_size := mload(returndata)
                        revert(add(32, returndata), returndata_size)
                    }
                } else {
                    revert(errorMessage);
                }
            }
        }
    }
    contract Ownable is Context {
        address private _owner;
        address private _previousOwner;

        event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
        constructor () internal {
            address msgSender = _msgSender();
            _owner = msgSender;
            emit OwnershipTransferred(address(0), msgSender);
        }
        function owner() public view returns (address) {
            return _owner;
        }
        modifier onlyOwner() {
            require(_owner == _msgSender(), "Ownable: caller is not the owner");
            _;
        }
        function renounceOwnership() public virtual onlyOwner {
            emit OwnershipTransferred(_owner, address(0));
            _owner = address(0);
        }
        function transferOwnership(address newOwner) public virtual onlyOwner {
            require(newOwner != address(0), "Ownable: new owner is the zero address");
            emit OwnershipTransferred(_owner, newOwner);
            _owner = newOwner;
        }
    }  

    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 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 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 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 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 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 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;
    }

    contract NadaInu is Context, IERC20, Ownable {

        using SafeMath for uint256;
        using Address for address;
        string private _name = 'Nada Inu';
        string private _symbol = 'NADA';
        uint8 private _decimals = 9;
        uint256 private _taxFee = 15; 
        uint256 private _devFee = 10;
        uint256 private _previousTaxFee = _taxFee;
        uint256 private _previousdevFee = _devFee;
        uint256 private constant MAX = ~uint256(0);
        uint256 private _tTotal = 1000000000000e9;
        uint256 private _rTotal = (MAX - (MAX % _tTotal));
        uint256 private _tFeeTotal;
        uint256 private _maxTxAmount = 1000000000000e9;
        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 _isExcluded;
        address[] private _excluded;  
        address payable public _developmentWalletAddress;

        IUniswapV2Router02 public immutable uniswapV2Router;
        address public immutable uniswapV2Pair;

        bool inSwap = false;
        bool public swapEnabled = true;

        //minimum amount of tokens to be swaped => 1k
        uint256 private _numOfTokensToExchangeFordevFee = 1 * 10**3 * 10**9;
        event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
        event SwapEnabledUpdated(bool enabled);
        modifier lockTheSwap {
            inSwap = true;
            _;
            inSwap = false;
        }
        constructor (address payable developmentWalletAddress) public {
            _developmentWalletAddress = developmentWalletAddress;
            _rOwned[_msgSender()] = _rTotal;

            IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // UniswapV2 for Ethereum network
            uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
                .createPair(address(this), _uniswapV2Router.WETH());
            uniswapV2Router = _uniswapV2Router;
            _isExcludedFromFee[owner()] = true;
            _isExcludedFromFee[address(this)] = true;

            emit Transfer(address(0), _msgSender(), _tTotal);
        }
        function name() public view returns (string memory) {
            return _name;
        }
        function symbol() public view returns (string memory) {
            return _symbol;
        }
        function decimals() public view returns (uint8) {
            return _decimals;
        }
        function totalSupply() public view override returns (uint256) {
            return _tTotal;
        }
        function balanceOf(address account) public view override returns (uint256) {
            if (_isExcluded[account]) return _tOwned[account];
            return tokenFromReflection(_rOwned[account]);
        }
        function transfer(address recipient, uint256 amount) public override returns (bool) {
            _transfer(_msgSender(), recipient, amount);
            return true;
        }
        function allowance(address owner, address spender) public view override returns (uint256) {
            return _allowances[owner][spender];
        }
        function approve(address spender, uint256 amount) public override returns (bool) {
            _approve(_msgSender(), spender, amount);
            return true;
        }
        function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
            _transfer(sender, recipient, amount);
            _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
            return true;
        }
        function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
            _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
            return true;
        }
        function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
            _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
            return true;
        }
        function isExcluded(address account) public view returns (bool) {
            return _isExcluded[account];
        }
        function setExcludeFromFee(address account, bool excluded) external onlyOwner() {
            _isExcludedFromFee[account] = excluded;
        }
        function totalFees() public view returns (uint256) {
            return _tFeeTotal;
        }
        function deliver(uint256 tAmount) public {
            address sender = _msgSender();
            require(!_isExcluded[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) public 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 excludeAccount(address account) external onlyOwner() {
            require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.');
            require(!_isExcluded[account], "Account is already excluded");
            if(_rOwned[account] > 0) {
                _tOwned[account] = tokenFromReflection(_rOwned[account]);
            }
            _isExcluded[account] = true;
            _excluded.push(account);
        }
        function includeAccount(address account) external onlyOwner() {
            require(_isExcluded[account], "Account is already excluded");
            for (uint256 i = 0; i < _excluded.length; i++) {
                if (_excluded[i] == account) {
                    _excluded[i] = _excluded[_excluded.length - 1];
                    _tOwned[account] = 0;
                    _isExcluded[account] = false;
                    _excluded.pop();
                    break;
                }
            }
        }
        function removeAllFee() private {
            if(_taxFee == 0 && _devFee == 0) return;
            _previousTaxFee = _taxFee;
            _previousdevFee = _devFee;
            _taxFee = 0;
            _devFee = 0;
        }
        function restoreAllFee() private {
            _taxFee = _previousTaxFee;
            _devFee = _previousdevFee;
        }
        function isExcludedFromFee(address account) public view returns(bool) {
            return _isExcludedFromFee[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 sender, address recipient, uint256 amount) private {
            require(sender != address(0), "ERC20: transfer from the zero address");
            require(recipient != address(0), "ERC20: transfer to the zero address");
            require(amount > 0, "Transfer amount must be greater than zero");  
            if(sender != owner() && recipient != owner())
                require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");

            uint256 contractTokenBalance = balanceOf(address(this));
            if(contractTokenBalance >= _maxTxAmount)
            {
                contractTokenBalance = _maxTxAmount;
            }
            bool overMinTokenBalance = contractTokenBalance >= _numOfTokensToExchangeFordevFee;
            if (!inSwap && swapEnabled && overMinTokenBalance && sender != uniswapV2Pair) {
                swapTokensForEth(contractTokenBalance);
                
                uint256 contractETHBalance = address(this).balance;
                if(contractETHBalance > 0) {
                    sendETHTodevelopmentWalletAddress(address(this).balance);
                }
            }
            bool takeFee = true;
            if(_isExcludedFromFee[sender] || _isExcludedFromFee[recipient]){
                takeFee = false;
            }
            _tokenTransfer(sender,recipient,amount,takeFee);
        }
        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);
            // swapping
            uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
                tokenAmount,
                0,
                path,
                address(this),
                block.timestamp
            );
        }
        function sendETHTodevelopmentWalletAddress(uint256 amount) private {
            _developmentWalletAddress.transfer(amount);
        }
        function manualSwap() external onlyOwner() {
            uint256 contractBalance = balanceOf(address(this));
            swapTokensForEth(contractBalance);
        }
        function manualSend() external onlyOwner() {
            uint256 contractETHBalance = address(this).balance;
            sendETHTodevelopmentWalletAddress(contractETHBalance);
        }
        function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {
            if(!takeFee)
                removeAllFee();

            if (_isExcluded[sender] && !_isExcluded[recipient]) {
                _transferFromExcluded(sender, recipient, amount);
            } else if (!_isExcluded[sender] && _isExcluded[recipient]) {
                _transferToExcluded(sender, recipient, amount);
            } else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
                _transferStandard(sender, recipient, amount);
            } else if (_isExcluded[sender] && _isExcluded[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 tdevelopmentWalletAddress) = _getValues(tAmount);
            _rOwned[sender] = _rOwned[sender].sub(rAmount);
            _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); 
            _takedevfee(tdevelopmentWalletAddress); 
            _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 tdevfee) = _getValues(tAmount);
            _rOwned[sender] = _rOwned[sender].sub(rAmount);
            _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
            _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);    
            _takedevfee(tdevfee);           
            _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 tdevfee) = _getValues(tAmount);
            _tOwned[sender] = _tOwned[sender].sub(tAmount);
            _rOwned[sender] = _rOwned[sender].sub(rAmount);
            _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); 
            _takedevfee(tdevfee);   
            _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 tdevfee) = _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);   
            _takedevfee(tdevfee);         
            _reflectFee(rFee, tFee);
            emit Transfer(sender, recipient, tTransferAmount);
        }
        function _takedevfee(uint256 tdevfee) private {
            uint256 currentRate =  _getRate();
            uint256 rdevfee = tdevfee.mul(currentRate);
            _rOwned[address(this)] = _rOwned[address(this)].add(rdevfee);
            if(_isExcluded[address(this)])
                _tOwned[address(this)] = _tOwned[address(this)].add(tdevfee);
        }
        function _reflectFee(uint256 rFee, uint256 tFee) private {
            _rTotal = _rTotal.sub(rFee);
            _tFeeTotal = _tFeeTotal.add(tFee);
        }
        receive() external payable {}
        function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
            (uint256 tTransferAmount, uint256 tFee, uint256 tdevfee) = _getTValues(tAmount, _taxFee, _devFee);
            uint256 currentRate =  _getRate();
            (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);
            return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tdevfee);
        }
        function _getTValues(uint256 tAmount, uint256 taxFee, uint256 devFee) private pure returns (uint256, uint256, uint256) {
            uint256 tFee = tAmount.mul(taxFee).div(100);
            uint256 tdevfee = tAmount.mul(devFee).div(100);
            uint256 tTransferAmount = tAmount.sub(tFee).sub(tdevfee);
            return (tTransferAmount, tFee, tdevfee);
        }
        function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
            uint256 rAmount = tAmount.mul(currentRate);
            uint256 rFee = tFee.mul(currentRate);
            uint256 rTransferAmount = rAmount.sub(rFee);
            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 _getTaxFee() private view returns(uint256) {
            return _taxFee;
        }
        function _getMaxTxAmount() private view returns(uint256) {
            return _maxTxAmount;
        }
        function _getETHBalance() public view returns(uint256 balance) {
            return address(this).balance;
        }
        function _setTaxFee(uint256 taxFee) external onlyOwner() {
            require(taxFee >= 0 && taxFee <= 20, 'taxFee should be in 0 - 20');
            _taxFee = taxFee;
        }
        function _setdevFee(uint256 devFee) external onlyOwner() {
            require(devFee >= 1 && devFee <= 15, 'devFee should be in 1 - 15');
            _devFee = devFee;
        }
        function _setdevelopmentWalletAddress(address payable developmentWalletAddress) external onlyOwner() {
            _developmentWalletAddress = developmentWalletAddress;
        }
        function _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
            require(maxTxAmount >= 1000000000000e9 , 'maxTxAmount should be greater than 1000000000000e9');
            _maxTxAmount = maxTxAmount;
        }
    }