/**
 *Submitted for verification at Etherscan.io on 2019-02-18
*/
pragma solidity ^0.4.24;

contract Manager {
  address public owner;
  address public newOwner;
  event TransferOwnership(address oldaddr, address newaddr);

  modifier onlyOwner() {
    require (msg.sender == owner);
	// GS: Added yield below
    _;
  }

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

  function transferOwnership(address _newOwner) onlyOwner public {
    newOwner = _newOwner;
  }

  function acceptOwnership() public {
    require(msg.sender == newOwner);
    address oldaddr = owner;
    owner = newOwner;
    newOwner = address(0);
    emit TransferOwnership(oldaddr, owner);
  }

}

library SafeMath {
  function mul(uint256 _a, uint256 _b) internal pure returns (uint256) {
    if (_a == 0) {
      return 0;
	}
    uint256 c = _a * _b;
    require(c / _a == _b);
    return c;
  }
  function div(uint256 _a, uint256 _b) internal pure returns (uint256) {
    require(_b > 0);
    uint256 c = _a / _b;
    return c;
  }
  function sub(uint256 _a, uint256 _b) internal pure returns (uint256) {
    require(_b <= _a);
    uint256 c = _a - _b;
    return c;
  }
  function add(uint256 _a, uint256 _b) internal pure returns (uint256) {
    uint256 c = _a + _b;
    require(c >= _a);
    return c;
  }
  function mod(uint256 _a, uint256 _b) internal pure returns (uint256) {
    require(_b != 0);
    return _a % _b;
  }
}

// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// ----------------------------------------------------------------------------
contract ERC20Interface {
  function totalSupply() public view returns (uint256);
  function balanceOf(address _owner) public view returns (uint256 balance);
  function allowance(address _owner, address _spender) public view returns (uint256 remaining);
  function transfer(address _to, uint256 _value) public returns (bool success);
  function transferFrom(address _from, address _to, uint _value) public returns (bool success);
  function approve(address _spender, uint256 _value) public returns (bool success);
  event Transfer(address indexed from, address indexed to, uint tokens);
  event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}

contract ReentrancyGuard {
  uint256 private guardCounter = 1;
  modifier noReentrant() {
    guardCounter += 1;
    uint256 localCounter = guardCounter;
    _;
    require(localCounter == guardCounter);
  }
}

interface tokenRecipient {
  function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external;
}

contract ERC20Base is ERC20Interface, ReentrancyGuard {
  using SafeMath for uint256;
  string public name;
  string public symbol;
  uint8 public decimals = 18;
  uint256 public totalSupply;
  mapping(address => uint256) public balanceOf;
  mapping(address => mapping(address => uint256)) public allowance;

  constructor() public {}

  function() public payable {
    revert();
  }

  function totalSupply() public view returns (uint256) {
    return totalSupply;
  }

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

  function allowance(address _owner, address _spender) public view returns (uint256 remaining) {
    return allowance[_owner][_spender];
  }

  function _transfer(address _from, address _to, uint256 _value) internal returns (bool success) {
    require(_to != 0x0);
    require(balanceOf[_from] >= _value);
    if (balanceOf[_to].add(_value) <= balanceOf[_to]) {
      revert();
    }
    uint256 previousBalances = balanceOf[_from].add(balanceOf[_to]);
    balanceOf[_from] = balanceOf[_from].sub(_value);
    balanceOf[_to] = balanceOf[_to].add(_value);
    emit Transfer(_from, _to, _value);
    assert(balanceOf[_from].add(balanceOf[_to]) == previousBalances);
    return true;
  }

  function transfer(address _to, uint256 _value) public returns (bool success) {
    return _transfer(msg.sender, _to, _value);
  }

  function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
    require(_value <= allowance[_from][msg.sender]);
    allowance[_from][msg.sender] = allowance[_from][msg.sender].sub(_value);
    return _transfer(_from, _to, _value);
  }

  function approve(address _spender, uint256 _value) public returns (bool success) {
    allowance[msg.sender][_spender] = _value;
    emit Approval(msg.sender, _spender, _value);
    return true;
  }

  function increaseApproval(address _spender, uint256 _addedValue) public returns (bool) {
    allowance[msg.sender][_spender] = (
    allowance[msg.sender][_spender].add(_addedValue));
    emit Approval(msg.sender, _spender, allowance[msg.sender][_spender]);
    return true;
  }

  function decreaseApproval(address _spender, uint256 _subtractedValue) public returns (bool) {
    uint256 oldValue = allowance[msg.sender][_spender];
    if (_subtractedValue >= oldValue) {
      allowance[msg.sender][_spender] = 0;
    } else {
      allowance[msg.sender][_spender] = oldValue.sub(_subtractedValue);
    }
    emit Approval(msg.sender, _spender, allowance[msg.sender][_spender]);
    return true;
  }

  function approveAndCall(address _spender, uint256 _value, bytes _extraData) noReentrant public returns (bool success) {
    tokenRecipient spender = tokenRecipient(_spender);
    if (approve(_spender, _value)) {
      spender.receiveApproval(msg.sender, _value, this, _extraData);
      return true;
	}
  }
}

contract ManualToken is Manager, ERC20Base {
  bool public isTokenLocked;
  bool public isUseFreeze;
  struct Frozen {
    uint256 amount;
  }

  mapping(address => Frozen) public frozenAccount;
  event FrozenFunds(address indexed target, uint256 freezeAmount);

  constructor()
  ERC20Base()
  public
  {
    name = "FAB Token";
    symbol = "FAB";
    totalSupply = 55000000000 * 1 ether;
    isUseFreeze = true;
    isTokenLocked = false;
    balanceOf[msg.sender] = totalSupply;
    emit Transfer(address(0), msg.sender, totalSupply);
  }

  modifier tokenLock() {
    require(isTokenLocked == false);
    _;
  }

  function setLockToken(bool _lock) onlyOwner public {
    isTokenLocked = _lock;
  }

  function setUseFreeze(bool _useOrNot) onlyOwner public {
    isUseFreeze = _useOrNot;
  }

  function freezeAmount(address target, uint256 amountFreeze) onlyOwner public {
    frozenAccount[target].amount = amountFreeze;
    emit FrozenFunds(target, amountFreeze);
  }

  function isFrozen(address target) public view returns (uint256) {
    return frozenAccount[target].amount;
  }

  function _transfer(address _from, address _to, uint256 _value) tokenLock internal returns (bool success) {
    require(_to != 0x0);
    require(balanceOf[_from] >= _value);
    if (balanceOf[_to].add(_value) <= balanceOf[_to]) {
      revert();
    }
    if (isUseFreeze == true) {
      require(balanceOf[_from].sub(_value) >= frozenAccount[_from].amount);
    }
    balanceOf[_from] = balanceOf[_from].sub(_value);
    balanceOf[_to] = balanceOf[_to].add(_value);
    emit Transfer(_from, _to, _value);
    return true;
  }
}

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