// Contract: LiquidVault
// Target function: function setBaseBuyFee(
 b;
    }

    function sub(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a - b;
        require((b >= 0 && c <= a) || (b < 0 && c > a));
        return c;
    }

    function add(int256 a, int256 b) internal pure returns (int256) {
        int256 c = a + b;
        require((b >= 0 && c >= a) || (b < 0 && c < a));
        return c;
    }

    function abs(int256 a) internal pure returns (int256) {
        require(a != MIN_INT256);
        return a < 0 ? -a : a;
    }

    function toUint256Safe(int256 a) internal pure returns (uint256) {
        require(a >= 0);
        return uint256(a);
    }
}

library SafeMathUint {
    function toInt256Safe(uint256 a) internal pure returns (int256) {
        int256 b = int256(a);
        require(b >= 0);
        return b;
    }
}

library IterableMapping {
    struct Map {
        address[] keys;
        mapping(address => uint) values;
        mapping(address => uint) indexOf;
        mapping(address => bool) inserted;
    }

    function get(Map storage map, address key) public view returns (uint) {
        return map.values[key];
    }

    function getIndexOfKey(
        Map storage map,
        address key
    ) public view returns (int) {
        if (!map.inserted[key]) {
            return -1;
        }
        return int(map.indexOf[key]);
    }

    function getKeyAtIndex(
        Map storage map,
        uint index
    ) public view returns (address) {
        return map.keys[index];
    }

    function size(Map storage map) public view returns (uint) {
        return map.keys.length;
    }

    function set(Map storage map, address key, uint val) public {
        if (map.inserted[key]) {
            map.values[key] = val;
        } else {
            map.inserted[key] = true;
            map.values[key] = val;
            map.indexOf[key] = map.keys.length;
            map.keys.push(key);
        }
    }

    function remove(Map storage map, address key) public {
        if (!map.inserted[key]) {
            return;
        }

        delete map.inserted[key];
        delete map.values[key];

        uint index = map.indexOf[key];
        uint lastIndex = map.keys.length - 1;
        address lastKey = map.keys[lastIndex];

        map.indexOf[lastKey] = index;
        delete map.indexOf[key];

        map.keys[index] = lastKey;
        map.keys.pop();
    }
}

abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
        return msg.data;
    }
}

contract Ownable is Context {
    address private _owner;

    event OwnershipTransferred(
        address indexed previousOwner,
        address indexed newOwner
    );

    constructor() {
        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;
    }
}

contract ERC20 is Context, IERC20, IERC20Metadata {
    using SafeMath for uint256;

    mapping(address => uint256) private _balances;
    mapping(address => mapping(address => uint256)) private _allowances;

    uint256 private _totalSupply;
    string private _name;
    string private _symbol;

    constructor(string memory name_, string memory symbol_) {
        _name = name_;
        _symbol = symbol_;
    }

    function name() public view virtual override returns (string memory) {
        return _name;
    }

    function symbol() public view virtual override returns (string memory) {
        return _symbol;
    }

    function decimals() public view virtual override returns (uint8) {
        return 18;
    }

    function totalSupply() public view virtual override returns (uint256) {
        return _totalSupply;
    }

    function balanceOf(
        address account
    ) public view virtual override returns (uint256) {
        return _balances[account];
    }

    function transfer(
        address recipient,
        uint256 amount
    ) public virtual override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }

    function allowance(
        address owner,
        address spender
    ) public view virtual override returns (uint256) {
        return _allowances[owner][spender];
    }

    function approve(
        address spender,
        uint256 amount
    ) public virtual override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }

    function transferFrom(
        address sender,
        address recipient,
        uint256 amount
    ) public virtual 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 _transfer(
        address sender,
        address recipient,
        uint256 amount
    ) internal virtual {
        require(sender != address(0), "ERC20: transfer from the zero address");
        require(recipient != address(0), "ERC20: transfer to the zero address");
        _beforeTokenTransfer(sender, recipient, amount);
        _balances[sender] = _balances[sender].sub(
            amount,
            "ERC20: transfer amount exceeds balance"
        );
        _balances[recipient] = _balances[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }

    function _mint(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: mint to the zero address");
        _beforeTokenTransfer(address(0), account, amount);
        _totalSupply = _totalSupply.add(amount);
        _balances[account] = _balances[account].add(amount);
        emit Transfer(address(0), account, amount);
    }

    function _burn(address account, uint256 amount) internal virtual {
        require(account != address(0), "ERC20: burn from the zero address");
        _beforeTokenTransfer(account, address(0), amount);
        _balances[account] = _balances[account].sub(
            amount,
            "ERC20: burn amount exceeds balance"
        );
        _totalSupply = _totalSupply.sub(amount);
        emit Transfer(account, address(0), amount);
    }

    function _approve(
        address owner,
        address spender,
        uint256 amount
    ) internal virtual {
        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 _beforeTokenTransfer(
        address from,
        address to,
        uint256 amount
    ) internal virtual {}
}

contract LiquidVault is Ownable, ERC20 {
    IRouter public uniswapV2Router;
    address public immutable uniswapV2Pair;

    string private constant _name = "Liquid Vault";
    string private constant _symbol = "LDV";
    uint8 private constant _decimals = 18;

    bool public isTradingEnabled;
    bool public transferCoolDown;

    uint256 constant maxSupply = 5000000000 * (10 ** 18);
    uint256 public maxWalletAmount = (maxSupply * 220) / 10000;
    uint256 public maxTxAmount = (maxSupply * 200) / 10000;

    uint256 private minWalletTx;
    uint256 private minimumSwapAmt;
    uint256 public minimumTokensBeforeSwap = (maxSupply * 3) / 10000;
    bool private _swapping;

    address private liquidityWallet;
    address private marketingWallet;
    address private treasuryWallet;

    struct FeeMap {
        bytes23 periodName;
        uint8 blocksInPeriod;
        uint256 timeInPeriod;
        uint8 liquidityFeeOnBuy;
        uint8 liquidityFeeOnSell;
        uint8 marketingFeeOnBuy;
        uint8 marketingFeeOnSell;
        uint8 buyBackFeeOnBuy;
        uint8 buyBackFeeOnSell;
        uint8 burnFeeOnBuy;
        uint8 burnFeeOnSell;
    }

    FeeMap private _base = FeeMap("base", 0, 0, 1, 0, 20, 20, 1, 1, 0, 1);

    mapping(address => bool) private _isAllowedToTradeWhenDisabled;
    mapping(address => bool) private _isExcludedFromFee;
    mapping(address => bool) private _isExcludedFromMaxTransactionLimit;
    mapping(address => bool) private _isExcludedFromMaxWalletLimit;
    mapping(address => uint256) private _swapAmount;
    mapping(address => bool) public automatedMarketMakerPairs;
    mapping(address => uint256) private _holderlastTimestamp;

    uint8 private _liquidityFee;
    uint8 private _marketingFee;
    uint8 private _buyBackFee;
    uint8 private _burnFee;
    uint8 private _totalFee;

    event AutomatedMarketMakerPairChange(
        address indexed pair,
        bool indexed value
    );
    event UniswapV2RouterChange(
        address indexed newAddress,
        address indexed oldAddress
    );
    event StructureChange(
        string indexed indentifier,
        address indexed newWallet,
        address indexed oldWallet
    );
    event FeeChange(
        string indexed identifier,
        uint8 liquidityFee,
        uint8 marketingFee,
        uint8 buyBackFee,
        uint8 burnFee
    );
    event DetailFeeChange(
        uint256 indexed newValue,
        uint256 indexed oldValue,
        string indexed taxType,
        bytes23 period
    );
    event MaxTransactionAmountChange(
        uint256 indexed newValue,
        uint256 indexed oldValue
    );
    event MaxWalletAmountChange(
        uint256 indexed newValue,
        uint256 indexed oldValue
    );
    event ExcludeFromFeesProcess(address indexed account, bool isExcluded);
    event ExcludeFromMaxTransferChange(
        address indexed account,
        bool isExcluded
    );
    event ExcludeFromMaxStructureChange(
        address indexed account,
        bool isExcluded
    );
    event AllowedWhenTradingDisabledChange(
        address indexed account,
        bool isExcluded
    );
    event MinTokenAmountBeforeSwapChange(
        uint256 indexed newValue,
        uint256 indexed oldValue
    );
    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );
    event TokenBurn(uint8 _burnFee, uint256 burnAmount);
    event FeesApplied(
        uint8 liquidityFee,
        uint8 marketingFee,
        uint8 buyBackFee,
        uint8 burnFee,
        uint8 totalFee
    );
    event BuyBackTriggered(uint256 amount);
    event WithdrawOverETH(uint256 amount);

    constructor() ERC20(_name, _symbol) {
        liquidityWallet = owner();
        treasuryWallet = address(0x14104a15646eFa17fefc45A473FB6dB6199C85dA);
        marketingWallet = address(0xb39BaFd511d95709226aaE92bA7F0F7ccE2AE9d6);

        IRouter _uniswapV2Router = IRouter(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );
        address _uniswapV2Pair = IFactory(_uniswapV2Router.factory())
            .createPair(address(this), _uniswapV2Router.WETH());
        uniswapV2Router = _uniswapV2Router;
        uniswapV2Pair = _uniswapV2Pair;
        _settingAutomatedMarketMakerPair(_uniswapV2Pair, true);
        transferCoolDown = true;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[marketingWallet] = true;
        _isExcludedFromFee[treasuryWallet] = true;
        _isExcludedFromFee[address(this)] = true;
        _isAllowedToTradeWhenDisabled[owner()] = true;
        _isExcludedFromMaxWalletLimit[_uniswapV2Pair] = true;
        _isExcludedFromMaxWalletLimit[address(uniswapV2Router)] = true;
        _isExcludedFromMaxWalletLimit[address(this)] = true;
        _isExcludedFromMaxWalletLimit[owner()] = true;
        _isExcludedFromMaxWalletLimit[marketingWallet] = true;
        _isExcludedFromMaxWalletLimit[treasuryWallet] = true;
        _isExcludedFromMaxWalletLimit[address(0xdead)] = true;
        _isExcludedFromMaxTransactionLimit[address(this)] = true;
        _isExcludedFromMaxTransactionLimit[owner()] = true;
        _isExcludedFromMaxTransactionLimit[marketingWallet] = true;
        _isExcludedFromMaxTransactionLimit[treasuryWallet] = true;
        _mint(owner(), maxSupply);
    }

    receive() external payable {}

    // trading start!
    function openTrading() external onlyOwner {
        isTradingEnabled = true;
    }


    function allowTradingDisabled(
        address account,
        bool allowed
    ) external onlyOwner {
        _isAllowedToTradeWhenDisabled[account] = allowed;
        emit AllowedWhenTradingDisabledChange(account, allowed);
    }

    function _settingAutomatedMarketMakerPair(address pair, bool value) private {
        require(
            automatedMarketMakerPairs[pair] != value,
            "Automated market maker pair is already set to that value"
        );
        automatedMarketMakerPairs[pair] = value;
        emit AutomatedMarketMakerPairChange(pair, value);
    }

    function excludeFromFees(
        address account,
        bool excluded
    ) external onlyOwner {
        require(
            _isExcludedFromFee[account] != excluded,
            "Account is already the value of 'excluded'"
        );
        _isExcludedFromFee[account] = excluded;
        emit ExcludeFromFeesProcess(account, excluded);
    }

    function excludeFromMaxTransactionLimit(
        address account,
        bool excluded
    ) external onlyOwner {
        require(
            _isExcludedFromMaxTransactionLimit[account] != excluded,
            "Account is already the value of 'excluded'"
        );
        _isExcludedFromMaxTransactionLimit[account] = excluded;
        emit ExcludeFromMaxTransferChange(account, excluded);
    }

    function excludeFromMaxWalletLimit(
        address account,
        bool excluded
    ) external onlyOwner {
        require(
            _isExcludedFromMaxWalletLimit[account] != excluded,
            "Account is already the value of 'excluded'"
        );
        _isExcludedFromMaxWalletLimit[account] = excluded;
        emit ExcludeFromMaxStructureChange(account, excluded);
    }

    function setStructure(
        address newLiquidityWallet,
        address newMarketingWallet,
        address newTreasuryWallet
    ) external onlyOwner {
        if (liquidityWallet != newLiquidityWallet) {
            require(
                newLiquidityWallet != address(0),
                "The liquidityWallet cannot be 0"
            );
            require(
                newLiquidityWallet != uniswapV2Pair,
                "The liquidityWallet cannot be 0"
            );
            emit StructureChange(
                "liquidityWallet",
                newLiquidityWallet,
                liquidityWallet
            );
            liquidityWallet = newLiquidityWallet;
        }
        if (marketingWallet != newMarketingWallet) {
            require(
                newMarketingWallet != address(0),
                "The marketingWallet cannot be 0"
            );
            require(
                newMarketingWallet != uniswapV2Pair,
                "The marketingWallet cannot be 0"
            );
            emit StructureChange(
                "marketingWallet",
                newMarketingWallet,
                marketingWallet
            );
            marketingWallet = newMarketingWallet;
        }
        if (treasuryWallet != newTreasuryWallet) {
            require(
                newTreasuryWallet != address(0),
                "The treasuryWallet cannot be 0"
            );
            require(
                newTreasuryWallet != uniswapV2Pair,
                "The treasuryWallet cannot be 0"
            );
            emit StructureChange(
                "treasuryWallet",
                newTreasuryWallet,
                treasuryWallet
            );
            treasuryWallet = newTreasuryWallet;
        }
    }