/**
 *Submitted for verification at Etherscan.io on 2020-06-01
*/

pragma solidity ^0.4.25;

contract Token {
    uint256 public totalSupply;
    function balanceOf(address _owner) public constant returns (uint256 balance);
    function transfer(address _to, uint256 _value) public returns (bool success);
    function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
    function approve(address _spender, uint256 _value) public returns (bool success);
    function allowance(address _owner, address _spender) public constant returns (uint256 remaining);
    event Transfer(address indexed _from, address indexed _to, uint256 _value);
    event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}

contract Owned {

    address public owner;

    address newOwner = 0x0;

    modifier isOwner() {
        require(msg.sender == owner);
        _;
    }

    constructor() public {
        owner = msg.sender;
    }

    event OwnerUpdate(address _prevOwner, address _newOwner);

    function changeOwner(address _newOwner) public isOwner {
        require(_newOwner != owner);
        newOwner = _newOwner;
    }

    function acceptOwnership() public {
        require(msg.sender == newOwner);
        emit OwnerUpdate(owner, newOwner);
        owner = newOwner;
        newOwner = 0x0;
    }

}

contract Controlled is Owned {

    bool public transferEnabled = true;

    bool public lockFlag = true;

    constructor() public {
       setExclude(msg.sender);
    }

    mapping(address => bool) public locked;

    mapping(address => bool) public exclude;

    function enableTransfer(bool _enable) public isOwner{
        transferEnabled = _enable;
    }

    function disableLock(bool enable) public isOwner returns (bool success){
        lockFlag = enable;
        return true;
    }

    function addLock(address addr) public isOwner returns (bool success){
        require(addr != msg.sender);
        locked[addr] = true;
        return true;
    }

    function setExclude(address _addr) public isOwner returns (bool success){
        exclude[_addr] = true;
        return true;
    }

    function removeLock(address _addr) public isOwner returns (bool success){
        locked[_addr] = false;
        return true;
    }

    modifier transferAllowed(address _address) {
        if (!exclude[_address]) {
            assert(transferEnabled);
            if(lockFlag){
                assert(!locked[_address]);
            }
        }
        _;
    }

    modifier validAddress(address _addr) {
        assert(0x0 != _addr && 0x0 != msg.sender);
        _;
    }
}

contract StandardToken is Token, Controlled {

    function balanceOf(address _owner) public constant returns (uint256 balance) {
        return balances[_owner];
    }

    function transfer(address target, uint256 value) public transferAllowed(msg.sender) validAddress(target) returns (bool success) {
        require(value > 0);
        if (balances[msg.sender] >= value && balances[target] + value > balances[target]) {
            balances[msg.sender] -= value;
            balances[target] += value;
            emit Transfer(msg.sender, target, value);
            return true;
        } else {
            return false;
        }
    }

    function transferFrom(address _from, address target, uint256 value) public transferAllowed(msg.sender) validAddress(target) returns (bool success) {
        require(value > 0);
        if (balances[_from] >= value && allowed[_from][msg.sender] >= value && balances[target] + value > balances[target]) {
            balances[target] += value;
            balances[_from] -= value;
            allowed[_from][msg.sender] -= value;
            emit Transfer(_from, target, value);
            return true;
        } else {
            return false;
        }
    }

    function approve(address spender, uint256 value) public returns (bool success) {
        require(value > 0);
        allowed[msg.sender][spender] = value;
        emit Approval(msg.sender, spender, value);
        return true;
    }

    function allowance(address owner, address spender) public constant returns (uint256 remaining) {
      return allowed[owner][spender];
    }

    mapping (address => uint256) balances;
    mapping (address => mapping (address => uint256)) allowed;
}

contract Currency is StandardToken {

    string public name;
    string public symbol;
    uint8 public decimals = 18;

    constructor (address _addr, uint256 initialSupply, string _tokenName, string _tokenSymbol) public {
        setExclude(_addr);
        totalSupply = initialSupply * 10 ** uint256(decimals);
        balances[_addr] = totalSupply;
        name = _tokenName;
        symbol = _tokenSymbol;
    }

}

{
  "compilationTarget": {
    "Currency.sol": "Currency"
  },
  "evmVersion": "byzantium",
  "libraries": {},
  "optimizer": {
    "enabled": false,
    "runs": 200
  },
  "remappings": []
}