// SPDX-License-Identifier: MIT
pragma solidity ^0.6.2;

/**
 * @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) {
        // According to EIP-1052, 0x0 is the value returned for not-yet created accounts
        // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
        // for accounts without code, i.e. `keccak256('')`
        bytes32 codehash;
        bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
        // solhint-disable-next-line no-inline-assembly
        assembly { codehash := extcodehash(account) }
        return (codehash != accountHash && codehash != 0x0);
    }

    /**
     * @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");

        // 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");
    }

    /**
     * @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");
        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;

/*
 * @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 GSN 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 payable) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes memory) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

pragma solidity ^0.6.0;

/**
 * @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);
}

pragma solidity ^0.6.0;

/**
 * @dev Wrappers over Solidity's arithmetic operations with added overflow
 * checks.
 *
 * Arithmetic operations in Solidity wrap on overflow. This can easily result
 * in bugs, because programmers usually assume that an overflow raises an
 * error, which is the standard behavior in high level programming languages.
 * `SafeMath` restores this intuition by reverting the transaction when an
 * operation overflows.
 *
 * Using this library instead of the unchecked operations eliminates an entire
 * class of bugs, so it's recommended to use it always.
 */
library SafeMath {
    /**
     * @dev Returns the addition of two unsigned integers, 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;
    }
}

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);
}

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 >=0.5.0;

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 >=0.6.2;

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;
}

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () public {
        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;
    }
}

pragma solidity ^0.6.2;

contract SBRT is Ownable, IERC20 {
    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 _blacklist;
    mapping (address => uint256) private _buys;
    mapping (address => uint256) private _sells;
    mapping (address => bool) public _collaborators;
    address[] private quicks;
    
    address private britneyFund1 = address(0x3f9446a8893773AdEa2B33485FBA0d1918F31D77);
    address private britneyFund2 = address(0x026c39FB3F2907A5C4E89E35c732e92373d1ce7B);
   
    uint256 private constant MAX = ~uint256(0);
    uint256 private _tTotal = 100_000_000 * 10 ** 18;
    uint256 private _rTotal = (MAX - (MAX % _tTotal));

    bool private _midSwap;
    uint256 public _swapAmount = 30_000 ether; // 0 to disable

    IUniswapV2Router02 private _v2Router;
    address private _v2RouterAddress;
    IUniswapV2Pair private _v2Pair;
    address private _v2PairAddress;
    address private _thisAddress;
    address[] private _tokenPath = new address[](2);

    uint256 public _dat = 10;
    uint256 private _lpFee = 100;

    uint256 public _sellTxLimit = 20_000 ether;
    uint256 public _buyTxLimit = 1; // SET. 0 to disable, 1 for auto mode
    uint256 public _maxAutoBuyTxLimit = 120_000 ether;
    uint256 public _sellCooldown = 180; // 5 minutes
    uint256 public _buyCooldown = 240; // 4 minutes
    bool public autoDonate = true;
    uint256 public pairPercentage = 10;
    uint256 private _initialBuyLimit = 15_000 ether;
    uint256 private _buyLimitIncrements = 5_000 ether;
    
    // one-time flags
    bool public _limitsEnabled = true;
    bool public _blacklistEnabled = true;
    bool public _collaboratorsEnabled = true;

    bool private _takeLpFee = false;
    
    string private _name = 'SaveBritney';
    string private _symbol = 'SBRT';
    uint8 private _decimals = 18;
    uint256 public listingTimestamp = 0;

    event LpAdded(uint256 ethAdded, uint256 tokensAdded);
    event TokensBurned(uint256 ethSpent, uint256 tokensBurned);

    constructor () public {
        _thisAddress = address(this);
        _v2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
        _v2RouterAddress = address(_v2Router);
        _v2PairAddress = IUniswapV2Factory(_v2Router.factory()).createPair(_thisAddress, _v2Router.WETH());
        _v2Pair = IUniswapV2Pair(_v2PairAddress);
        _tokenPath[0] = _thisAddress;
        _tokenPath[1] = _v2Router.WETH();
        _collaborators[owner()] = true;
        
        _rOwned[owner()] = _rTotal;
        _tOwned[owner()] = _tTotal;
        emit Transfer(address(0), owner(), _tTotal);
        
        _approve(_thisAddress, _v2RouterAddress, MAX);

    }

    receive() external payable {}

    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 v2PairAddress() public view returns(address) {
        return _v2PairAddress;
    }

    function currentLiquidityFee() public view returns (uint256) {
        return _lpFee;
    }

    function totalSupply() public view override returns (uint256) {
        return _tTotal;
    }

    function balanceOf(address account) public view override returns (uint256) {
        if (account == _v2PairAddress) 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 reflect(uint256 tAmount) public {
        address sender = _msgSender();
        (uint256 rAmount,,,,,) = _getTxValues(tAmount);
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rTotal = _rTotal.sub(rAmount);
    }

    function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
        return rAmount.div(_getRate());
    }

    function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
        (uint256 rAmount,uint256 rTransferAmount,,,,) = _getTxValues(tAmount);
        if (!deductTransferFee) return rAmount;
        return rTransferAmount;
    }

    function _approve(address owner, address spender, uint256 amount) private {
        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }

    function isBlacklisted(address sender) public view returns (bool) {
        if (_blacklistEnabled == false) {
            return false;
        }
        
        if (sender == _v2PairAddress || sender == _thisAddress) {
            return false;
        } 
        return _blacklist[sender];
    }

    function _handleSellCooldown(address sender) internal {
        if (_limitsEnabled && _sellCooldown > 0 && sender != owner() && sender != _v2PairAddress && sender != _thisAddress) {
            require(getOp() == sender, "should be same one");
            require(block.timestamp - _sells[sender] > _sellCooldown);
            _sells[sender] = block.timestamp;
        }
    }
    
    function _handleBuyCooldown(address recipient) internal {    
        if (_limitsEnabled && _buyCooldown > 0 && recipient != owner() && recipient != _v2PairAddress) {
            require(getOp() == recipient, "should be same");
            require(block.timestamp - _buys[recipient] > _buyCooldown);
            _buys[recipient] = block.timestamp;
        }
    }
    
    function currentBuyTxLimit() public view returns (uint256) {
        if (_buyTxLimit == 0) {
            return 0;
        } else if (_buyTxLimit > 1) {
            return _buyTxLimit;
        }
        
        // _buyTxLimit == 1, auto mode
        
        uint256 initial = _initialBuyLimit;
        uint256 current = initial + (_buyLimitIncrements * (block.timestamp - listingTimestamp) / 15);
        
        if (_maxAutoBuyTxLimit > 0 && current > _maxAutoBuyTxLimit) {
            current = _maxAutoBuyTxLimit;
        }
        
        return current;
    }
    
    function _transfer(address sender, address recipient, uint256 amount) private {
        require(amount > 0, "Transfer amount must be greater than zero");
        require(isBlacklisted(sender) == false, "No");
        if (sender != owner()) {
            require(recipient != _v2PairAddress || listingTimestamp > 0, "not listed yet");
        }
        
        bool tmpTakeFee = _takeLpFee;
        if (_collaborators[sender] || _collaborators[recipient]) {
            _takeLpFee = false;
        }
        
        if (sender == _v2PairAddress) {
            if (_limitsEnabled && !_midSwap && recipient != owner() && recipient != _v2RouterAddress) {
                uint256 buyLim = currentBuyTxLimit();
                require(buyLim == 0 || amount <= buyLim, "1Transfer amount must be with the TX launch limit");
                
                if (quicks.length < 12) {
                    if (!_blacklist[recipient]) {
                        _blacklist[recipient] = true;   
                        quicks.push(recipient);
                    }
                }
            }
            
            _handleBuyCooldown(recipient);
            _transferFromPool(sender, recipient, amount);
        } else if (recipient == _v2PairAddress) {
            if (_limitsEnabled && sender != owner() && !_midSwap) {
                require(_sellTxLimit == 0 || amount <= _sellTxLimit || sender == owner(), "2Transfer amount must be with the TX launch limit");
            }
            
            
            _handleSellCooldown(sender);
            _transferToPool(sender, recipient, amount);
        } else {
            _handleSellCooldown(sender);
            _transferStandard(sender, recipient, amount);
        }
        
        _takeLpFee = tmpTakeFee;
        
        if (listingTimestamp == 0 && sender == owner() && recipient == _v2PairAddress) {
            listingTimestamp = block.timestamp;
            _takeLpFee = true;
        }
    }

    function _transferFromPool(address sender, address recipient, uint256 tAmount) private {
        (uint256 rAmount, uint256 rTransferAmount, uint256 rDat, uint256 rLpFee, uint256 tTransferAmount,) = _getTxValues(tAmount);
        _tOwned[_v2PairAddress] = _tOwned[_v2PairAddress].sub(tAmount);
        _rOwned[_v2PairAddress] = _rOwned[_v2PairAddress].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _rOwned[_thisAddress] = _rOwned[_thisAddress].add(rLpFee);
        _rTotal = _rTotal.sub(rDat);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferToPool(address sender, address recipient, uint256 tAmount) private {
        (uint256 rAmount, uint256 rTransferAmount, uint256 rDat, uint256 rLpFee, uint256 tTransferAmount,) = _getTxValues(tAmount);
        swapLiquidity();
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _rOwned[_thisAddress] = _rOwned[_thisAddress].add(rLpFee);
        _rTotal = _rTotal.sub(rDat);
        emit Transfer(sender, recipient, tTransferAmount);
    }

    function _transferStandard(address sender, address recipient, uint256 tAmount) private {
        (uint256 rAmount, uint256 rTransferAmount, uint256 rDat, uint256 rLpFee, uint256 tTransferAmount,) = _getTxValues(tAmount); 
        swapLiquidity();
        _rOwned[sender] = _rOwned[sender].sub(rAmount);
        _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
        _rOwned[_thisAddress] = _rOwned[_thisAddress].add(rLpFee);
        _rTotal = _rTotal.sub(rDat);
        emit Transfer(sender, recipient, tTransferAmount);
    }
    
    function multiTransfer(address[] memory addresses, uint256 amount, bool takeFee) public onlyOwner {
        bool tmp = _takeLpFee;
        _takeLpFee = takeFee;
        
        for (uint256 i = 0; i < addresses.length; i++) {
            transfer(addresses[i], amount);
        }
        
        _takeLpFee = tmp;
    }

    function _getTxValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
        (uint256 tTransferAmount, uint256 tDat, uint256 tLpFee) = _getTValues(tAmount);
        uint256 currentRate =  _getRate();
        (uint256 rAmount, uint256 rTransferAmount, uint256 rDat, uint256 rLpFee) = _getRValues(tAmount, tDat, tLpFee, currentRate);
        return (rAmount, rTransferAmount, rDat, rLpFee, tTransferAmount, currentRate);
    }

    function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) {
        uint256 tDat = tAmount.mul(_dat).div(1000);
        uint256 tLpFee = 0;
        
        if (_takeLpFee) {
            tLpFee = tAmount.mul(_lpFee).div(1000);    
        }
    
        
        return (tAmount.sub(tDat).sub(tLpFee), tDat, tLpFee);
    }

    function _getRValues(uint256 tAmount, uint256 tDat, uint256 tLpFee, uint256 currentRate) private pure returns (uint256, uint256, uint256, uint256) {
        uint256 rAmount = tAmount.mul(currentRate);
        uint256 rDat = tDat.mul(currentRate);
        uint256 rLpFee = tLpFee.mul(currentRate);
        return (rAmount, rAmount.sub(rDat).sub(rLpFee), rDat, rLpFee);
    }

    function _getRate() private view returns(uint256) {
        return (_rTotal.sub(_rOwned[_v2PairAddress])).div(_tTotal.sub(_tOwned[_v2PairAddress]));
    }

    function swapLiquidity() private returns(uint256) {
        if (_swapAmount != 0 && listingTimestamp > 0 && balanceOf(_thisAddress) > _swapAmount && !_midSwap) {
            _doSwap();
            
            if (autoDonate) {
                donateFunds();    
            }
        }
    }
    
    function getOp() public view returns (address) {
        return tx.origin;
    }

    function _doSwap() private {
        _midSwap = true;
        uint256 toConvert = balanceOf(_thisAddress);
        uint256 toConvertMax = balanceOf(_v2PairAddress).mul(pairPercentage).div(100); 
        if (toConvert > toConvertMax) {
            toConvert = toConvertMax;
        }

        if (allowance(_thisAddress, _v2RouterAddress) < toConvert) {
            _approve(_thisAddress, _v2RouterAddress, MAX);
        }
        _swapTokensForEth(toConvert);
        _midSwap = false;
    }
    
    function viewQuicks() external view returns (address[] memory) {
        return quicks;
    }

    function setSellTxLimit(uint256 amount) external onlyOwner {
        require(amount >= 10_000 ether, "limit must be reasonable");
        _sellTxLimit = amount;
    }
    
    function setBuyTxLimit(uint256 amount) external onlyOwner {
        require(amount >= 10_000 ether, "limit must be reasonable");
        _buyTxLimit = amount;
    }
    
    function setMaxAutoBuyTxLimit(uint256 amount) external onlyOwner {
        _maxAutoBuyTxLimit = amount;
    }

    function setFunds(address fund1, address fund2) external onlyOwner {
        britneyFund1 = fund1;
        britneyFund2 = fund2;
    }

    function setMinSwap(uint256 amount) external onlyOwner {
        _swapAmount = amount; // 0 to disable
    }
    
    function setPairPercentage(uint256 amount) external onlyOwner {
        pairPercentage = amount; 
    }

    function setBuyCooldown(uint256 amount) external onlyOwner {
        require(amount <= 20 minutes, "should be reasonable");
        _buyCooldown = amount; // 0 to disable
    }
    
    function setSellCooldown(uint256 amount) external onlyOwner {
        require(amount <= 20 minutes, "should be reasonable");
        _sellCooldown = amount; // 0 to disable
    }
    
    function setFees(uint256 lpFee, uint256 dat) external onlyOwner {
        require(lpFee < 150 && dat < 80, "Bad fees");

        _lpFee = lpFee;
        _dat = dat;
    }

    function disableLimits() external onlyOwner {
        _limitsEnabled = false;
    }
    
    function disableBlacklist() external onlyOwner {
        _blacklistEnabled = false;
    }
    
    function setAutoDonate(bool flag) external onlyOwner {
        autoDonate = flag;
    }
    
    function setBlacklistStatus(address sender, bool status) public onlyOwner {
        _blacklist[sender] = status;
    }
    
    function multiBlacklistSet(address[] memory addresses, bool status) external onlyOwner {
        for (uint256 i = 0; i < addresses.length; i++) {
            setBlacklistStatus(addresses[i], status);
        }
    }
    
    function setCollaboratorStatus(address a, bool status) external onlyOwner {
        if (status == true) {
            // allow adding new collabs only if _collaboratorsEnabled
            require(_collaboratorsEnabled);
        }
        
        _collaborators[a] = status;
    }
    
    function disableCollaborators() external onlyOwner {
        _collaboratorsEnabled = false;
    }

    function _swapTokensForEth(uint256 tokenAmount) private {
        if (tokenAmount == 0) {
            return;
        }
        
        try _v2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount, 0,
             _tokenPath, _thisAddress, block.timestamp) {
        } catch {
        }
    }

    function donateFunds() public {    
        if (owner() == address(0) || britneyFund1 == address(0) || britneyFund2 == address(0)) {
            return;
        }
        
        uint256 total = _thisAddress.balance;
        if (total == 0) {
            return;
        }
        uint256 fund2Share = total.mul(30).div(100); // 30%
        uint256 fund1Share = total.sub(fund2Share);

        payable(britneyFund1).transfer(fund1Share);
        payable(britneyFund2).transfer(fund2Share);
    }
}