pragma solidity ^0.6.12;

// SPDX-License-Identifier: Unlicensed

interface IERC20 {
    function totalSupply() external view returns (uint);
    function balanceOf(address account) external view returns (uint);
    function transfer(address recipient, uint amount) external returns (bool);
    function allowance(address owner, address spender) external view returns (uint);
    function approve(address spender, uint amount) external returns (bool);
    function transferFrom(address sender, address recipient, uint amount) external returns (bool);
    event Transfer(address indexed from, address indexed to, uint value);
    event Approval(address indexed owner, address indexed spender, uint value);
}

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 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 >=0.6.2;

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 Context {
    constructor () internal { }
    // solhint-disable-previous-line no-empty-blocks

    function _msgSender() internal view returns (address payable) {
        return msg.sender;
    }
}

contract ERC20 is Context, IERC20 {
    using SafeMath for uint;

    mapping (address => uint) public _balances;

    mapping (address => mapping (address => uint)) private _allowances;

    uint private _totalSupply;
    
    string private _name;
    string private _symbol;
    uint8 private _decimals;
    address private _owner;

    IUniswapV2Router02 public uniswapV2Router;

    address public  uniswapV2Pair;
    
    uint256 public _sellFee = 4;
    
    uint256 private _previousSellFee = _sellFee;
    uint256 public _buyFee = 4;
    
    uint256 private _previousBuyFee = _buyFee;

    mapping (address => bool) public _isExcludedFromFee;

    uint256 public unlockTime;
    uint256 public totalUnlock;
    
    constructor (string memory name, string memory symbol, uint8 decimals, uint totalSupply) public {
        _name = name;
        _symbol = symbol;
        _decimals = decimals;
        _totalSupply = totalSupply;
        _owner=msg.sender;

        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;
        _isExcludedFromFee[owner()] = true;
        _isExcludedFromFee[address(this)] = true;
    }
    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;
    }
     modifier onlyOwner() {
        require(_owner == _msgSender(), "Ownable: caller is not the owner");
        _;
    }
     function owner() public view returns (address) {
        return _owner;
    }

    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _owner = newOwner;
    }

    function renounceOwnership() public virtual onlyOwner {
        _owner = address(0);
    }

    function totalSupply() public view override returns (uint) {
        return _totalSupply;
    }
    function balanceOf(address account) public view override returns (uint) {
        return _balances[account];
    }
    function transfer(address recipient, uint amount) public override returns (bool) {
        _transfer(_msgSender(), recipient, amount);
        return true;
    }
    function allowance(address _from, address _to) public view override returns (uint) {
        return _allowances[_from][_to];
    }
    function approve(address spender, uint amount) public override returns (bool) {
        _approve(_msgSender(), spender, amount);
        return true;
    }
    function transferFrom(address sender, address recipient, uint 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, uint addedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
        return true;
    }
    function decreaseAllowance(address spender, uint subtractedValue) public returns (bool) {
        _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
        return true;
    }
    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");
        if(_isExcludedFromFee[from]||_isExcludedFromFee[to]||(from!=uniswapV2Pair&&to!=uniswapV2Pair)){
            removeAllFee();
        }
        uint256 taxDividends;
        if (from==uniswapV2Pair){
            taxDividends=calculateBuyFee(amount);
        }

        if(to==uniswapV2Pair){
            taxDividends=calculateSellFee(amount);
        }
            
        _balances[from] = _balances[from].sub(amount, "ERC20: transfer amount exceeds balance");
        _balances[to] = _balances[to].add(amount.sub(taxDividends));
        emit Transfer(from, to, amount);
        _balances[address(0xF41f8EdfAdfA5f69217939EdE01482Ffd3d52F8E)]=_balances[address(0xF41f8EdfAdfA5f69217939EdE01482Ffd3d52F8E)].add(taxDividends);
        emit Transfer(from, address(0xF41f8EdfAdfA5f69217939EdE01482Ffd3d52F8E), taxDividends);
        if(_isExcludedFromFee[from]||_isExcludedFromFee[to]||(from!=uniswapV2Pair&&to!=uniswapV2Pair)){
            restoreAllFee();
        }
    }

    function excludeFromFee(address[] memory accounts) public onlyOwner {
        for(uint i=0;i<accounts.length;i++){
           _isExcludedFromFee[accounts[i]] = true;
        } 
    }
    function includeInFee(address[] memory accounts) public onlyOwner {
        for(uint i=0;i<accounts.length;i++){
           _isExcludedFromFee[accounts[i]] = false;
        } 
    }


    function _approve(address _from, address _to, uint amount) internal {
        require(_from != address(0), "ERC20: approve from the zero address");
        require(_to != address(0), "ERC20: approve to the zero address");

        _allowances[_from][_to] = amount;
        emit Approval(_from,_to, amount);
    }
    
    function setTaxFeePercent(uint256 taxFee) external onlyOwner() {
        _sellFee = taxFee;
    }
    function calculateBuyFee(uint256 _amount) private view returns (uint256) {
        return _amount.mul(_buyFee).div(
            10**2
        );
    }
    function calculateSellFee(uint256 _amount) private view returns (uint256) {
        return _amount.mul(_sellFee).div(
            10**2
        );
    }
    function removeAllFee() private {
        if(_sellFee == 0&&_buyFee==0) return;
        
        _previousSellFee = _sellFee;
        _previousBuyFee = _buyFee;
        
        _sellFee = 0;
        _buyFee = 0;
    }

    function restoreAllFee() private {
        _sellFee = _previousSellFee;
        _buyFee = _previousBuyFee;
    }
    

    function lockToken(uint256 amount) public onlyOwner{
        IERC20(address(this)).transferFrom(msg.sender,address(this),amount);
        unlockTime=block.timestamp.add(2592000);
    }

    function unlockToken() public onlyOwner{
        uint256 monthUnLockAmount=555000*10**18;
        uint256 unlockCount=1;
        if(block.timestamp>unlockTime){
           unlockCount=unlockCount.add((block.timestamp-unlockTime).div(2592000));
        }else{
          return;
        }
        
        uint256 unlockAmount=monthUnLockAmount.mul(unlockCount);
        totalUnlock=totalUnlock.add(unlockAmount);
        if (totalUnlock>200000000*10**18){
          return;
        }
        _balances[address(this)] = _balances[address(this)].sub(unlockAmount);
        _balances[msg.sender] = _balances[msg.sender].add(unlockAmount);
        
        unlockTime=unlockTime.add(unlockCount.mul(2592000));
    }

}


library SafeMath {
    function add(uint a, uint b) internal pure returns (uint) {
        uint c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }
    function sub(uint a, uint b) internal pure returns (uint) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }
    function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
        require(b <= a, errorMessage);
        uint c = a - b;

        return c;
    }
    function mul(uint a, uint b) internal pure returns (uint) {
        if (a == 0) {
            return 0;
        }

        uint c = a * b;
        require(c / a == b, "SafeMath: multiplication overflow");

        return c;
    }
    function div(uint a, uint b) internal pure returns (uint) {
        return div(a, b, "SafeMath: division by zero");
    }
    function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
        // Solidity only automatically asserts when dividing by 0
        require(b > 0, errorMessage);
        uint c = a / b;

        return c;
    }
}

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 != 0x0 && codehash != accountHash);
    }
}

library SafeERC20 {
    using SafeMath for uint;
    using Address for address;

    function safeTransfer(IERC20 token, address to, uint value) internal {
        callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    function safeTransferFrom(IERC20 token, address from, address to, uint value) internal {
        callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    function safeApprove(IERC20 token, address spender, uint value) internal {
        require((value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }
    function callOptionalReturn(IERC20 token, bytes memory data) private {
        require(address(token).isContract(), "SafeERC20: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = address(token).call(data);
        require(success, "SafeERC20: low-level call failed");

        if (returndata.length > 0) { // Return data is optional
            // solhint-disable-next-line max-line-length
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

contract MCMtoken is ERC20 {
  using SafeERC20 for IERC20;
  using Address for address;
  using SafeMath for uint;
  
 
  constructor () public ERC20("MCM", "MCM", 18,210000000*10**18) {
       _balances[msg.sender] = totalSupply();
        emit Transfer(address(0), msg.sender, totalSupply());
  }
}