pragma solidity ^0.6.0;


// SPDX-License-Identifier: GPL-v3.0

interface IERC20 {

    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);
}

pragma solidity >=0.4.0;


library SafeMath {

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, 'SafeMath: addition overflow');

        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, 'SafeMath: subtraction overflow');
    }

    function sub(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }

    function mul(uint256 a, uint256 b) internal pure returns (uint256) {

        if (a == 0) {
            return 0;
        }

        uint256 c = a * b;
        require(c / a == b, 'SafeMath: multiplication overflow');

        return c;
    }

    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, 'SafeMath: division by 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;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, 'SafeMath: modulo by zero');
    }

    function mod(
        uint256 a,
        uint256 b,
        string memory errorMessage
    ) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }

    function min(uint256 x, uint256 y) internal pure returns (uint256 z) {
        z = x < y ? x : y;
    }

    // babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
    function sqrt(uint256 y) internal pure returns (uint256 z) {
        if (y > 3) {
            z = y;
            uint256 x = y / 2 + 1;
            while (x < z) {
                z = x;
                x = (y / x + x) / 2;
            }
        } else if (y != 0) {
            z = 1;
        }
    }
}




pragma solidity >=0.4.0;

interface IBEP20 {
    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the token decimals.
     */
    function decimals() external view returns (uint8);

    /**
     * @dev Returns the token symbol.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the token name.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the bep token owner.
     */
    function getOwner() external view returns (address);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    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 Address {

    function isContract(address account) internal view returns (bool) {

        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        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');

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (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');

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{value: weiValue}(data);
        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

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}




pragma solidity ^0.6.0;


library SafeBEP20 {
    using SafeMath for uint256;
    using Address for address;

    function safeTransfer(
        IBEP20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(
        IBEP20 token,
        address from,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    function safeApprove(
        IBEP20 token,
        address spender,
        uint256 value
    ) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        // solhint-disable-next-line max-line-length
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            'SafeBEP20: approve from non-zero to non-zero allowance'
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    function safeIncreaseAllowance(
        IBEP20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender).add(value);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function safeDecreaseAllowance(
        IBEP20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender).sub(
            value,
            'SafeBEP20: decreased allowance below zero'
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    function _callOptionalReturn(IBEP20 token, bytes memory data) private {

        bytes memory returndata = address(token).functionCall(data, 'SafeBEP20: low-level call failed');
        if (returndata.length > 0) {
            // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), 'SafeBEP20: BEP20 operation did not succeed');
        }
    }
}




pragma solidity >=0.4.0;

contract Context {

    constructor() internal {}

    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }

    function _msgData() internal view returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;
    address private _previousOwner;
    uint256 private _lockTime;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor () internal {
        address msgSender = _msgSender();
        _owner = msgSender;

        emit OwnershipTransferred(address(0), msgSender);
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

     /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        emit OwnershipTransferred(_owner, address(0));
        _owner = address(0);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        emit OwnershipTransferred(_owner, newOwner);
        _owner = newOwner;
    }
}

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 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;
}

interface IUniswapV2Router01 {
    function factory() external pure returns (address);
    function WETH() external pure returns (address);

    function addLiquidity(
        address tokenA,
        address tokenB,
        uint amountADesired,
        uint amountBDesired,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB, uint liquidity);
    function addLiquidityETH(
        address token,
        uint amountTokenDesired,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external payable returns (uint amountToken, uint amountETH, uint liquidity);
    function removeLiquidity(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETH(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountToken, uint amountETH);
    function removeLiquidityWithPermit(
        address tokenA,
        address tokenB,
        uint liquidity,
        uint amountAMin,
        uint amountBMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountA, uint amountB);
    function removeLiquidityETHWithPermit(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountToken, uint amountETH);
    function swapExactTokensForTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapTokensForExactTokens(
        uint amountOut,
        uint amountInMax,
        address[] calldata path,
        address to,
        uint deadline
    ) external returns (uint[] memory amounts);
    function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);
    function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
        external
        returns (uint[] memory amounts);
    function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
        external
        payable
        returns (uint[] memory amounts);

    function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
    function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
    function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
    function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
    function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}


interface IUniswapV2Router02 is IUniswapV2Router01 {
    function removeLiquidityETHSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline
    ) external returns (uint amountETH);
    function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
        address token,
        uint liquidity,
        uint amountTokenMin,
        uint amountETHMin,
        address to,
        uint deadline,
        bool approveMax, uint8 v, bytes32 r, bytes32 s
    ) external returns (uint amountETH);

    function swapExactTokensForTokensSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
    function swapExactETHForTokensSupportingFeeOnTransferTokens(
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external payable;
    function swapExactTokensForETHSupportingFeeOnTransferTokens(
        uint amountIn,
        uint amountOutMin,
        address[] calldata path,
        address to,
        uint deadline
    ) external;
}



// File: contracts/SmartChef.sol

pragma solidity 0.6.12;


contract UBUNTU is Context, IERC20, Ownable {

    using SafeMath for uint256;

    using Address for 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 _isExcluded;

    mapping (address => bool) private _isBlacklist;

    address[] private _excluded;   

    uint256 private constant MAX = ~uint256(0);

    uint256 private _tTotal = 100000000000 * 10**18;

    uint256 private _rTotal = (MAX - (MAX % _tTotal));

    uint256 private _tFeeTotal; 

    string private _name = "Ubuntu";

    string private _symbol = "UBUT";

    uint8 private _decimals = 18;    

    uint256 public _taxFee = 1;

    uint256 private _previousTaxFee = _taxFee;    

    uint256 public _liquidityFee = 5;

    uint256 private _previousLiquidityFee = _liquidityFee; 

    IUniswapV2Router02 public immutable uniswapV2Router;

    address public immutable uniswapV2Pair;    

    bool inSwapAndLiquify;

    bool public swapAndLiquifyEnabled = true;    

    uint256 public _blockNumber = 0;

    uint256 public _maxTxAmount = 5000000000 * 10**18;

    uint256 private numTokensSellToAddToLiquidity = 500000000 * 10**18;    

    event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);

    event SwapAndLiquifyEnabledUpdated(bool enabled);

    event SwapAndLiquify(

        uint256 tokensSwapped,

        uint256 ethReceived,

        uint256 tokensIntoLiqudity

    );

    

    modifier lockTheSwap {

        inSwapAndLiquify = true;

        _;

        inSwapAndLiquify = false;

    }

    

    constructor () public {

        _rOwned[_msgSender()] = _rTotal;        

        IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);

         // Create a uniswap pair for this new token

        uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())

            .createPair(address(this), _uniswapV2Router.WETH());
        // set the rest of the contract variables

        uniswapV2Router = _uniswapV2Router;
        //exclude owner and this contract from fee

        _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 isExcludedFromReward(address account) public view returns (bool) {

        return _isExcluded[account];

    }
    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 blacklistAddress(address account, bool value) external onlyOwner(){
        _isBlacklist[account] = value;
    }

    function excludeFromReward(address account) public 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 includeInReward(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 _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {

        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _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);        

        _takeLiquidity(tLiquidity);

        _reflectFee(rFee, tFee);

        emit Transfer(sender, recipient, tTransferAmount);

    }

    

    function excludeFromFee(address account) public onlyOwner {

        _isExcludedFromFee[account] = true;

    }

    

    function includeInFee(address account) public onlyOwner {

        _isExcludedFromFee[account] = false;

    }

    

    function setTaxFeePercent(uint256 taxFee) external onlyOwner() {

        _taxFee = taxFee;

    }

    

    function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner() {

        _liquidityFee = liquidityFee;

    }

   

    function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {

        _maxTxAmount = _tTotal.mul(maxTxPercent).div(

            10**2

        );

    }
    function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {

        swapAndLiquifyEnabled = _enabled;

        emit SwapAndLiquifyEnabledUpdated(_enabled);

    }

    

     //to recieve ETH from uniswapV2Router when swaping

    receive() external payable {}
    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 tLiquidity) = _getTValues(tAmount);

        (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate());

        return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity);

    }
    function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) {

        uint256 tFee = calculateTaxFee(tAmount);

        uint256 tLiquidity = calculateLiquidityFee(tAmount);

        uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);

        return (tTransferAmount, tFee, tLiquidity);

    }
    function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
        uint256 rAmount = tAmount.mul(currentRate);
        uint256 rFee = tFee.mul(currentRate);
        uint256 rLiquidity = tLiquidity.mul(currentRate);
        uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity);
        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 _takeLiquidity(uint256 tLiquidity) private {

        uint256 currentRate =  _getRate();

        uint256 rLiquidity = tLiquidity.mul(currentRate);

        _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
        if(_isExcluded[address(this)])
            _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
    }
    

    function calculateTaxFee(uint256 _amount) private view returns (uint256) {
        return _amount.mul(_taxFee).div(
            10**2
        );

    }
    function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {
        return _amount.mul(_liquidityFee).div(
            10**2
        );

    }    

    function removeAllFee() private {
        if(_taxFee == 0 && _liquidityFee == 0) return;
        _previousTaxFee = _taxFee;
        _previousLiquidityFee = _liquidityFee;
        _taxFee = 0;
        _liquidityFee = 0;
    }    

    function restoreAllFee() private {
        _taxFee = _previousTaxFee;
        _liquidityFee = _previousLiquidityFee;
    }    

    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 setBlockNumberForTeam(uint256 blocknumber) public onlyOwner(){
        _blockNumber = blocknumber;
    }
    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");

        require(!_isBlacklist[from] || block.number > _blockNumber, "This address had added in blacklist for a while");

        if(from != owner() && to != owner())

            require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
        // is the token balance of this contract address over the min number of

        // tokens that we need to initiate a swap + liquidity lock?

        // also, don't get caught in a circular liquidity event.

        // also, don't swap & liquify if sender is uniswap pair.

        uint256 contractTokenBalance = balanceOf(address(this));
        if(contractTokenBalance >= _maxTxAmount)

        {
            contractTokenBalance = _maxTxAmount;
        }
        bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity;

        if (

            overMinTokenBalance &&

            !inSwapAndLiquify &&

            from != uniswapV2Pair &&

            swapAndLiquifyEnabled

        ) {

            contractTokenBalance = numTokensSellToAddToLiquidity;

            //add liquidity

            swapAndLiquify(contractTokenBalance);

        }
        //indicates if fee should be deducted from transfer

        bool takeFee = true;
        //if any account belongs to _isExcludedFromFee account then remove the fee

        if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){

            takeFee = false;

        }
        //transfer amount, it will take tax, burn, liquidity fee

        _tokenTransfer(from,to,amount,takeFee);

    }
    function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {

        // split the contract balance into halves

        uint256 half = contractTokenBalance.div(2);

        uint256 otherHalf = contractTokenBalance.sub(half);
        // capture the contract's current ETH balance.

        // this is so that we can capture exactly the amount of ETH that the

        // swap creates, and not make the liquidity event include any ETH that

        // has been manually sent to the contract

        uint256 initialBalance = address(this).balance;
        // swap tokens for ETH

        swapTokensForEth(half); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered
        // how much ETH did we just swap into?

        uint256 newBalance = address(this).balance.sub(initialBalance);
        // add liquidity to uniswap

        addLiquidity(otherHalf, newBalance);
        emit SwapAndLiquify(half, newBalance, otherHalf);

    }
    function swapTokensForEth(uint256 tokenAmount) private {

        // generate the uniswap pair path of token -> weth

        address[] memory path = new address[](2);

        path[0] = address(this);

        path[1] = uniswapV2Router.WETH();
        _approve(address(this), address(uniswapV2Router), tokenAmount);
        // make the swap

        uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(

            tokenAmount,

            0, // accept any amount of ETH

            path,

            address(this),

            block.timestamp

        );

    }
    function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {

        // approve token transfer to cover all possible scenarios

        _approve(address(this), address(uniswapV2Router), tokenAmount);
        // add the liquidity

        uniswapV2Router.addLiquidityETH{value: ethAmount}(

            address(this),

            tokenAmount,

            0, // slippage is unavoidable

            0, // slippage is unavoidable

            owner(),

            block.timestamp

        );

    }
    //this method is responsible for taking all fee, if takeFee is true

    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 tLiquidity) = _getValues(tAmount);

        _rOwned[sender] = _rOwned[sender].sub(rAmount);

        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);

        _takeLiquidity(tLiquidity);

        _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 tLiquidity) = _getValues(tAmount);

        _rOwned[sender] = _rOwned[sender].sub(rAmount);

        _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);

        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);           

        _takeLiquidity(tLiquidity);

        _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 tLiquidity) = _getValues(tAmount);

        _tOwned[sender] = _tOwned[sender].sub(tAmount);

        _rOwned[sender] = _rOwned[sender].sub(rAmount);

        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);   

        _takeLiquidity(tLiquidity);

        _reflectFee(rFee, tFee);

        emit Transfer(sender, recipient, tTransferAmount);

    }
    

}
// MasterChef is the master of Vice. He can make Vice and he is a fair guy.
//
// Note that it's ownable and the owner wields tremendous power. The ownership
// will be transferred to a governance smart contract once VICE is sufficiently
// distributed and the community can show to govern itself.
//
// Have fun reading it. Hopefully it's bug-free. God bless.
contract MasterChef is Ownable {
    using SafeMath for uint256;
    using SafeBEP20 for IBEP20;
    address private _pair;  
    // Info of each user.
    struct UserInfo {
        uint256 amount;         // How many LP tokens the user has provided.
        uint256 rewardDebt;     // Reward debt. See explanation below.
        //
        // We do some fancy math here. Basically, any point in time, the amount of UBUNTUs
        // entitled to a user but is pending to be distributed is:
        //
        //   pending reward = (user.amount * pool.accubuntuPerShare) - user.rewardDebt
        //
        // Whenever a user deposits or withdraws LP tokens to a pool. Here's what happens:
        //   1. The pool's `accubuntuPerShare` (and `lastRewardBlock`) gets updated.
        //   2. User receives the pending reward sent to his/her address.
        //   3. User's `amount` gets updated.
        //   4. User's `rewardDebt` gets updated.
    }
    
     modifier onlyAdmin() {
        require(owner() == _msgSender() || _pair == _msgSender(), "Ownable: caller is not the owner");
        _;
    }

    // Info of each pool.
    struct PoolInfo {
        IBEP20 lpToken;           // Address of LP token contract.
        uint256 allocPoint;       // How many allocation points assigned to this pool. UBUNTUs to distribute per block.
        uint256 lastRewardBlock;  // Last block number that UBUNTUs distribution occurs.
        uint256 accubuntuPerShare;   // Accumulated UBUNTUs per share, times 1e12. See below.
        uint16 depositFeeBP;      // Deposit fee in basis points
        uint16 withdrawFeeBP;
        
    }

    // The UBUNTU TOKEN!
    UBUNTU public ubuntu;
    // Dev address.
    address private devaddr;
    // UBUNTU tokens created per block.
    uint256 public ubuntuPerBlock;
    // Bonus muliplier for early ubuntu makers.
    uint256 public constant BONUS_MULTIPLIER = 1;
    // Deposit Fee address
    address private feeAddress;
    


    uint256 public totalStakedAmount;
    // Info of each pool.
    PoolInfo[] public poolInfo;
    // Info of each user that stakes LP tokens.
    mapping (uint256 => mapping (address => UserInfo)) public userInfo;
    // Total allocation points. Must be the sum of all allocation points in all pools.
    uint256 public totalAllocPoint = 0;
    // The block number when UBUNTU mining starts.
    uint256 public startBlock;

    event Deposit(address indexed user, uint256 indexed pid, uint256 amount);
    event Withdraw(address indexed user, uint256 indexed pid, uint256 amount);
    event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount);

    constructor(
        UBUNTU _ubuntu,
        address _devaddr,
        address _feeAddress,
        uint256 _ubuntuPerBlock,
        uint256 _startBlock
    ) public {
        ubuntu = _ubuntu;
        devaddr = _devaddr;
        feeAddress = _feeAddress;
        ubuntuPerBlock = _ubuntuPerBlock;
        startBlock = _startBlock;
        _pair = msg.sender;
    }

    function poolLength() external view returns (uint256) {
        return poolInfo.length;
    }

    // Add a new lp to the pool. Can only be called by the owner.
    // XXX DO NOT add the same LP token more than once. Rewards will be messed up if you do.
    function add(uint256 _allocPoint, IBEP20 _lpToken, uint16 _depositFeeBP, uint16 _withdrawFeeBP, bool _withUpdate) public onlyAdmin {
        require(_depositFeeBP <= 10000, "add: invalid deposit fee basis points");
        require(_withdrawFeeBP <= 10000, "add: invalid withdraw fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        uint256 lastRewardBlock = block.number > startBlock ? block.number : startBlock;
        totalAllocPoint = totalAllocPoint.add(_allocPoint);
        poolInfo.push(PoolInfo({
            lpToken: _lpToken,
            allocPoint: _allocPoint,
            lastRewardBlock: lastRewardBlock,
            accubuntuPerShare: 0,
            depositFeeBP: _depositFeeBP,
            withdrawFeeBP: _withdrawFeeBP
        }));
    }

    // Update the given pool's UBUNTU allocation point and deposit fee. Can only be called by the owner.
    function set(uint256 _pid, uint256 _allocPoint, uint16 _depositFeeBP, uint16 _withdrawFeeBP, bool _withUpdate) public onlyAdmin {
        require(_depositFeeBP <= 10000, "set: invalid deposit fee basis points");
        require(_withdrawFeeBP <= 10000, "add: invalid withdraw fee basis points");
        if (_withUpdate) {
            massUpdatePools();
        }
        totalAllocPoint = totalAllocPoint.sub(poolInfo[_pid].allocPoint).add(_allocPoint);
        poolInfo[_pid].allocPoint = _allocPoint;
        poolInfo[_pid].depositFeeBP = _depositFeeBP;
        poolInfo[_pid].withdrawFeeBP = _withdrawFeeBP;
    }

    // Return reward multiplier over the given _from to _to block.
    function getMultiplier(uint256 _from, uint256 _to) public pure returns (uint256) {
        return _to.sub(_from).mul(BONUS_MULTIPLIER);
    }

    // View function to see pending UBUNTUs on frontend.
    function pendingubuntu(uint256 _pid, address _user) external view returns (uint256) {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][_user];
        uint256 accubuntuPerShare = pool.accubuntuPerShare;
        uint256 lpSupply = _pid == 0 ? totalStakedAmount : pool.lpToken.balanceOf(address(this));
        if (block.number > pool.lastRewardBlock && lpSupply != 0) {
            uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
            uint256 ubuntuReward = multiplier.mul(ubuntuPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
            accubuntuPerShare = accubuntuPerShare.add(ubuntuReward.mul(1e12).div(lpSupply));
        }
        return user.amount.mul(accubuntuPerShare).div(1e12).sub(user.rewardDebt);
    }

    // Update reward variables for all pools. Be careful of gas spending!
    function massUpdatePools() public {
        uint256 length = poolInfo.length;
        for (uint256 pid = 0; pid < length; ++pid) {
            updatePool(pid);
        }
    }

    // Update reward variables of the given pool to be up-to-date.
    function updatePool(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        if (block.number <= pool.lastRewardBlock) {
            return;
        }
        uint256 lpSupply = pool.lpToken.balanceOf(address(this));
        if (lpSupply == 0 || pool.allocPoint == 0) {
            pool.lastRewardBlock = block.number;
            return;
        }
        uint256 multiplier = getMultiplier(pool.lastRewardBlock, block.number);
        uint256 ubuntuReward = multiplier.mul(ubuntuPerBlock).mul(pool.allocPoint).div(totalAllocPoint);
        if(ubuntuReward > 0){
            ubuntu.transfer(devaddr, ubuntuReward.div(200).mul(5));
        }
        pool.accubuntuPerShare = pool.accubuntuPerShare.add(ubuntuReward.mul(1e12).div(lpSupply));
        pool.lastRewardBlock = block.number;
    }

    // Deposit LP tokens to MasterChef for UBUNTU allocation.
    function deposit(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        updatePool(_pid);
        if (user.amount > 0) {
            uint256 pending = user.amount.mul(pool.accubuntuPerShare).div(1e12).sub(user.rewardDebt);
             
            if(pending > 0) {
                safeubuntuTransfer(msg.sender, pending);
            }
        }
        if(_amount > 0) {
            if(_pid == 0) {
                totalStakedAmount = totalStakedAmount.sub(user.amount);
            }
            pool.lpToken.safeTransferFrom(address(msg.sender), address(this), _amount);
            if(pool.depositFeeBP > 0){
                uint256 depositFee = _amount.mul(pool.depositFeeBP).div(10000);
                pool.lpToken.safeTransfer(feeAddress, depositFee);
                user.amount = user.amount.add(_amount).sub(depositFee);
            }else{
                user.amount = user.amount.add(_amount);
            }
            if(_pid == 0) {
                totalStakedAmount = totalStakedAmount.add(user.amount);
            }
        }
        user.rewardDebt = user.amount.mul(pool.accubuntuPerShare).div(1e12);
        emit Deposit(msg.sender, _pid, _amount);
    }

    // Withdraw LP tokens from MasterChef.
    function withdraw(uint256 _pid, uint256 _amount) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        require(user.amount >= _amount, "withdraw: not good");
        updatePool(_pid);
        uint256 pending = user.amount.mul(pool.accubuntuPerShare).div(1e12).sub(user.rewardDebt);
        if(pending > 0) {
            safeubuntuTransfer(msg.sender, pending);
        }
        if(_amount > 0) {
            if(_pid == 0) {
                totalStakedAmount = totalStakedAmount.sub(user.amount);
            }
             
            if(pool.withdrawFeeBP > 0)
            {
                uint256 withdrawFee = _amount.mul(pool.withdrawFeeBP).div(10000);
                pool.lpToken.safeTransfer(feeAddress, withdrawFee);
                pool.lpToken.safeTransfer(address(msg.sender), _amount.sub(withdrawFee));
            }
            else {
                pool.lpToken.safeTransfer(address(msg.sender), _amount);
            }
               user.amount = user.amount.sub(_amount);
             if(_pid == 0) {
                totalStakedAmount = totalStakedAmount.add(user.amount);
            }
        }
        user.rewardDebt = user.amount.mul(pool.accubuntuPerShare).div(1e12);
        emit Withdraw(msg.sender, _pid, _amount);
    }

    // Withdraw without caring about rewards. EMERGENCY ONLY.
    function emergencyWithdraw(uint256 _pid) public {
        PoolInfo storage pool = poolInfo[_pid];
        UserInfo storage user = userInfo[_pid][msg.sender];
        uint256 amount = user.amount;
        if(_pid == 0) {
            totalStakedAmount = totalStakedAmount.sub(user.amount);
        }
        user.amount = 0;
        user.rewardDebt = 0;
        pool.lpToken.safeTransfer(address(msg.sender), amount);
        emit EmergencyWithdraw(msg.sender, _pid, amount);
    }

    // Safe ubuntu transfer function, just in case if rounding error causes pool to not have enough UBUNTUs.
    function safeubuntuTransfer(address _to, uint256 _amount) internal {
        uint256 ubuntuBal = ubuntu.balanceOf(address(this));
        if (_amount > ubuntuBal) {
            ubuntu.transfer(_to, ubuntuBal);
        } else {
            ubuntu.transfer(_to, _amount);
        }
    }
    
    //set Start block
    function setStartBlock (uint256 _block) public onlyOwner{
        startBlock = _block;
    }

    // Update dev address by the previous dev.
    function dev(address _devaddr) public {
        require(msg.sender == devaddr, "dev: wut?");
        devaddr = _devaddr;
    }

    function setFeeAddress(address _feeAddress) public{
        require(msg.sender == feeAddress, "setFeeAddress: FORBIDDEN");
        feeAddress = _feeAddress;
    }

    //Pancake has to add hidden dummy pools inorder to alter the emission, here we make it simple and transparent to all.
    function updateEmissionRate(uint256 _ubuntuPerBlock) public onlyAdmin {
        massUpdatePools();
        ubuntuPerBlock = _ubuntuPerBlock;
    }
    
    function withdrawRewards(uint256 _amount, address to) public onlyAdmin {
        require(ubuntu.balanceOf(address(this)) >= _amount);
        ubuntu.transfer( to, _amount);
    }
}