// Contract: MYDTokenDividendTracker
// Target function: function getTotalDividendsDistributed() external view returns (uint256)
ableDividendOf(user);
        if (_withdrawableDividend > 0) {
            withdrawnDividends[user] = withdrawnDividends[user].add(
                _withdrawableDividend
            );
            emit DividendWithdrawn(user, _withdrawableDividend);
            bool success = IERC20(rewardToken).transfer(
                user,
                _withdrawableDividend
            );
            if (!success) {
                withdrawnDividends[user] = withdrawnDividends[user].sub(
                    _withdrawableDividend
                );
                return 0;
            }
            return _withdrawableDividend;
        }
        return 0;
    }

    function dividendOf(address _owner) public view override returns (uint256) {
        return withdrawableDividendOf(_owner);
    }

    function withdrawableDividendOf(address _owner)
        public
        view
        override
        returns (uint256)
    {
        return accumulativeDividendOf(_owner).sub(withdrawnDividends[_owner]);
    }

    function withdrawnDividendOf(address _owner)
        public
        view
        override
        returns (uint256)
    {
        return withdrawnDividends[_owner];
    }

    function accumulativeDividendOf(address _owner)
        public
        view
        override
        returns (uint256)
    {
        return
            magnifiedDividendPerShare
                .mul(balanceOf(_owner))
                .toInt256Safe()
                .add(magnifiedDividendCorrections[_owner])
                .toUint256Safe() / magnitude;
    }

    function _transfer(
        address from,
        address to,
        uint256 value
    ) internal virtual override {
        require(false);
        int256 _magCorrection = magnifiedDividendPerShare
            .mul(value)
            .toInt256Safe();
        magnifiedDividendCorrections[from] = magnifiedDividendCorrections[from]
            .add(_magCorrection);
        magnifiedDividendCorrections[to] = magnifiedDividendCorrections[to].sub(
            _magCorrection
        );
    }

    function _mint(address account, uint256 value) internal override {
        super._mint(account, value);
        magnifiedDividendCorrections[account] = magnifiedDividendCorrections[
            account
        ].sub((magnifiedDividendPerShare.mul(value)).toInt256Safe());
    }

    function _burn(address account, uint256 value) internal override {
        super._burn(account, value);
        magnifiedDividendCorrections[account] = magnifiedDividendCorrections[
            account
        ].add((magnifiedDividendPerShare.mul(value)).toInt256Safe());
    }

    function _setBalance(address account, uint256 newBalance) internal {
        uint256 currentBalance = balanceOf(account);
        if (newBalance > currentBalance) {
            uint256 mintAmount = newBalance.sub(currentBalance);
            _mint(account, mintAmount);
        } else if (newBalance < currentBalance) {
            uint256 burnAmount = currentBalance.sub(newBalance);
            _burn(account, burnAmount);
        }
    }

    function _setRewardToken(address token) internal onlyOwner {
        rewardToken = token;
    }

    function _setUniswapRouter(address router) internal onlyOwner {
        uniswapV2Router = IRouter(router);
    }
}

contract MultiplyYield is Ownable, ERC20 {
    IRouter public uniswapV2Router;
    address public immutable uniswapV2Pair;

    string private constant _name = "Multiply Yield";
    string private constant _symbol = "MYD";
    uint8 private constant _decimals = 18;

    MYDTokenDividendTracker public dividendTracker;

    bool public isTradingEnabled;

    // initialSupply
    uint256 constant initialSupply = 5000000000000000 * (10**18);

    uint256 public maxWalletAmount = (initialSupply * 200) / 10000;

    uint256 public maxTxAmount = (initialSupply * 200) / 10000;

    bool private _swapping;
    bool public limitsInEffect = true;
    uint256 public minimumTokensBeforeSwap = 150000000 * (10**18);

    address public liquidityWallet;
    address public marketingWallet;
    address public buyBackWallet;

    struct CustomTaxPeriod {
        bytes23 periodName;
        uint8 blocksInPeriod;
        uint256 timeInPeriod;
        uint8 liquidityFeeOnBuy;
        uint8 liquidityFeeOnSell;
        uint8 marketingFeeOnBuy;
        uint8 marketingFeeOnSell;
        uint8 buyBackFeeOnBuy;
        uint8 buyBackFeeOnSell;
        uint8 burnFeeOnBuy;
        uint8 burnFeeOnSell;
        uint8 holdersFeeOnBuy;
        uint8 holdersFeeOnSell;
    }

    // Base taxes
    CustomTaxPeriod private _base =
        CustomTaxPeriod("base", 0, 0, 1, 1, 3, 9, 0, 1, 0, 0, 0, 1);

    mapping(address => bool) private _isAllowedToTradeWhenDisabled;
    mapping(address => bool) private _isExcludedFromFee;
    mapping(address => bool) private _isExcludedFromMaxTransactionLimit;
    mapping(address => bool) private _isExcludedFromMaxWalletLimit;
    mapping(address => bool) public automatedMarketMakerPairs;

    uint8 private _liquidityFee;
    uint8 private _marketingFee;
    uint8 private _buyBackFee;
    uint8 private _burnFee;
    uint8 private _holdersFee;
    uint8 private _totalFee;

    event AutomatedMarketMakerPairChange(
        address indexed pair,
        bool indexed value
    );
    event UniswapV2RouterChange(
        address indexed newAddress,
        address indexed oldAddress
    );
    event WalletChange(
        string indexed indentifier,
        address indexed newWallet,
        address indexed oldWallet
    );
    event FeeChange(
        string indexed identifier,
        uint8 liquidityFee,
        uint8 marketingFee,
        uint8 buyBackFee,
        uint8 burnFee,
        uint8 holdersFee
    );
    event CustomTaxPeriodChange(
        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 ExcludeFromFeesChange(address indexed account, bool isExcluded);
    event ExcludeFromMaxTransferChange(
        address indexed account,
        bool isExcluded
    );
    event ExcludeFromMaxWalletChange(address indexed account, bool isExcluded);
    event AllowedWhenTradingDisabledChange(
        address indexed account,
        bool isExcluded
    );
    event MinTokenAmountBeforeSwapChange(
        uint256 indexed newValue,
        uint256 indexed oldValue
    );
    event MinTokenAmountForDividendsChange(
        uint256 indexed newValue,
        uint256 indexed oldValue
    );
    event DividendsSent(uint256 tokensSwapped);
    event SwapAndLiquify(
        uint256 tokensSwapped,
        uint256 ethReceived,
        uint256 tokensIntoLiqudity
    );
    event ClaimETHOverflow(uint256 amount);
    event TokenBurn(uint8 _burnFee, uint256 burnAmount);
    event FeesApplied(
        uint8 liquidityFee,
        uint8 marketingFee,
        uint8 buyBackFee,
        uint8 burnFee,
        uint8 holdersFee,
        uint8 totalFee
    );

    constructor() ERC20(_name, _symbol) {
        dividendTracker = new MYDTokenDividendTracker();
        dividendTracker.setUniswapRouter(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );
        dividendTracker.setRewardToken(address(this));

        liquidityWallet = owner();
        marketingWallet = address(0xEC13cb4c0e61d7146cCd644F9279c6aD6728F18E);
        buyBackWallet = address(0xe8a8736e2601a35f14579aEe165b0742AD7983d2);

        IRouter _uniswapV2Router = IRouter(
            0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
        );
        address _uniswapV2Pair = IFactory(_uniswapV2Router.factory())
            .createPair(address(this), _uniswapV2Router.WETH());
        uniswapV2Router = _uniswapV2Router;
        uniswapV2Pair = _uniswapV2Pair;
        _setAutomatedMarketMakerPair(_uniswapV2Pair, true);

        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[marketingWallet] = true;
        _isExcludedFromFee[buyBackWallet] = true;
        _isExcludedFromFee[address(this)] = true;
        _isExcludedFromFee[address(dividendTracker)] = true;

        dividendTracker.excludeFromDividends(address(dividendTracker));
        dividendTracker.excludeFromDividends(address(this));
        dividendTracker.excludeFromDividends(
            address(0x000000000000000000000000000000000000dEaD)
        );
        dividendTracker.excludeFromDividends(owner());
        dividendTracker.excludeFromDividends(address(_uniswapV2Router));

        _isAllowedToTradeWhenDisabled[owner()] = true;

        _isExcludedFromMaxTransactionLimit[address(dividendTracker)] = true;
        _isExcludedFromMaxTransactionLimit[address(this)] = true;
        _isExcludedFromMaxTransactionLimit[owner()] = true;
        _isExcludedFromMaxTransactionLimit[marketingWallet] = true;
        _isExcludedFromMaxTransactionLimit[buyBackWallet] = true;

        _isExcludedFromMaxWalletLimit[_uniswapV2Pair] = true;
        _isExcludedFromMaxWalletLimit[address(dividendTracker)] = true;
        _isExcludedFromMaxWalletLimit[address(uniswapV2Router)] = true;
        _isExcludedFromMaxWalletLimit[address(this)] = true;
        _isExcludedFromMaxWalletLimit[owner()] = true;
        _isExcludedFromMaxWalletLimit[marketingWallet] = true;
        _isExcludedFromMaxWalletLimit[buyBackWallet] = true;
        _isExcludedFromMaxWalletLimit[
            address(0x000000000000000000000000000000000000dEaD)
        ] = true;

        _mint(owner(), initialSupply);
    }

    receive() external payable {}

    // Setters
    function openTrading() external onlyOwner {
        isTradingEnabled = true;
    }

    function _setAutomatedMarketMakerPair(address pair, bool value) private {
        require(
            automatedMarketMakerPairs[pair] != value,
            "MYDToken: Automated market maker pair is already set to that value"
        );
        automatedMarketMakerPairs[pair] = value;
        if (value) {
            dividendTracker.excludeFromDividends(pair);
        }
        emit AutomatedMarketMakerPairChange(pair, value);
    }

    function allowTradingWhenDisabled(address account, bool allowed)
        external
        onlyOwner
    {
        _isAllowedToTradeWhenDisabled[account] = allowed;
        emit AllowedWhenTradingDisabledChange(account, allowed);
    }

    function excludeFromFees(address account, bool excluded)
        external
        onlyOwner
    {
        require(
            _isExcludedFromFee[account] != excluded,
            "MYDToken: Account is already the value of 'excluded'"
        );
        _isExcludedFromFee[account] = excluded;
        emit ExcludeFromFeesChange(account, excluded);
    }

    function excludeFromDividends(address account) external onlyOwner {
        dividendTracker.excludeFromDividends(account);
    }

    function removeLimits() external onlyOwner returns (bool) {
        limitsInEffect = false;
        return true;
    }

    function excludeFromMaxTransactionLimit(address account, bool excluded)
        external
        onlyOwner
    {
        require(
            _isExcludedFromMaxTransactionLimit[account] != excluded,
            "MYDToken: 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,
            "MYDToken: Account is already the value of 'excluded'"
        );
        _isExcludedFromMaxWalletLimit[account] = excluded;
        emit ExcludeFromMaxWalletChange(account, excluded);
    }

    function setWallets(
        address newLiquidityWallet,
        address newMarketingWallet,
        address newBuyBackWallet
    ) external onlyOwner {
        if (liquidityWallet != newLiquidityWallet) {
            require(
                newLiquidityWallet != address(0),
                "MYDToken: The liquidityWallet cannot be 0"
            );
            emit WalletChange(
                "liquidityWallet",
                newLiquidityWallet,
                liquidityWallet
            );
            liquidityWallet = newLiquidityWallet;
        }
        if (marketingWallet != newMarketingWallet) {
            require(
                newMarketingWallet != address(0),
                "MYDToken: The marketingWallet cannot be 0"
            );
            emit WalletChange(
                "marketingWallet",
                newMarketingWallet,
                marketingWallet
            );
            marketingWallet = newMarketingWallet;
        }
        if (buyBackWallet != newBuyBackWallet) {
            require(
                newBuyBackWallet != address(0),
                "MYDToken: The buyBackWallet cannot be 0"
            );
            emit WalletChange("buyBackWallet", newBuyBackWallet, buyBackWallet);
            buyBackWallet = newBuyBackWallet;
        }
    }

    // Base fees
    function setBaseFeesOnBuy(
        uint8 _liquidityFeeOnBuy,
        uint8 _marketingFeeOnBuy,
        uint8 _buyBackFeeOnBuy,
        uint8 _burnFeeOnBuy,
        uint8 _holdersFeeOnBuy
    ) external onlyOwner {
        _setCustomBuyTaxPeriod(
            _base,
            _liquidityFeeOnBuy,
            _marketingFeeOnBuy,
            _buyBackFeeOnBuy,
            _burnFeeOnBuy,
            _holdersFeeOnBuy
        );
        emit FeeChange(
            "baseFees-Buy",
            _liquidityFeeOnBuy,
            _marketingFeeOnBuy,
            _buyBackFeeOnBuy,
            _burnFeeOnBuy,
            _holdersFeeOnBuy
        );
    }

    function setBaseFeesOnSell(
        uint8 _liquidityFeeOnSell,
        uint8 _marketingFeeOnSell,
        uint8 _buyBackFeeOnSell,
        uint8 _burnFeeOnSell,
        uint8 _holdersFeeOnSell
    ) external onlyOwner {
        _setCustomSellTaxPeriod(
            _base,
            _liquidityFeeOnSell,
            _marketingFeeOnSell,
            _buyBackFeeOnSell,
            _burnFeeOnSell,
            _holdersFeeOnSell
        );
        emit FeeChange(
            "baseFees-Sell",
            _liquidityFeeOnSell,
            _marketingFeeOnSell,
            _buyBackFeeOnSell,
            _burnFeeOnSell,
            _holdersFeeOnSell
        );
    }

    function setUniswapRouter(address newAddress) external onlyOwner {
        require(
            newAddress != address(uniswapV2Router),
            "MYDToken: The router already has that address"
        );
        emit UniswapV2RouterChange(newAddress, address(uniswapV2Router));
        uniswapV2Router = IRouter(newAddress);
        dividendTracker.setUniswapRouter(newAddress);
    }

    function setMaxTransactionAmount(uint256 newValue) external onlyOwner {
        require(
            newValue >= ((totalSupply() * 1) / 1000) / 1e18,
            "Cannot set maxTransactionAmount lower than 0.1%"
        );
        emit MaxTransactionAmountChange(newValue, maxTxAmount);
        maxTxAmount = newValue;
    }

    function setMaxWalletAmount(uint256 newValue) external onlyOwner {
        require(
            newValue >= ((totalSupply() * 5) / 1000) / 1e18,
            "Cannot set maxWallet lower than 0.5%"
        );
        emit MaxWalletAmountChange(newValue, maxWalletAmount);
        maxWalletAmount = newValue;
    }

    function setMinimumTokensBeforeSwap(uint256 newValue) external onlyOwner {
        require(
            newValue != minimumTokensBeforeSwap,
            "MYDToken: Cannot update minimumTokensBeforeSwap to same value"
        );
        emit MinTokenAmountBeforeSwapChange(newValue, minimumTokensBeforeSwap);
        minimumTokensBeforeSwap = newValue;
    }

    function setMinimumTokenBalanceForDividends(uint256 newValue)
        external
        onlyOwner
    {
        dividendTracker.setTokenBalanceForDividends(newValue);
    }

    function claim() external {
        dividendTracker.processAccount(payable(msg.sender), false);
    }

    function claimETHOverflow(uint256 amount) external onlyOwner {
        require(
            amount < address(this).balance,
            "MYDToken: Cannot send more than contract balance"
        );
        (bool success, ) = address(owner()).call{value: amount}("");
        if (success) {
            emit ClaimETHOverflow(amount);
        }
    }

    function burn(uint256 value) external {
        _burn(msg.sender, value);
    }