contract BasicToken is ERC20Basic, Ownable {
  using SafeMath for uint256;

  mapping(address => uint256) balances;
  // allowedAddresses will be able to transfer even when locked
  // lockedAddresses will *not* be able to transfer even when *not locked*
  mapping(address => bool) public allowedAddresses;
  mapping(address => bool) public lockedAddresses;
  bool public locked = false;

  function allowAddress(address _addr, bool _allowed) public onlyOwner {
    require(_addr != owner);
    allowedAddresses[_addr] = _allowed;
  }

  function lockAddress(address _addr, bool _locked) public onlyOwner {
    require(_addr != owner);
    lockedAddresses[_addr] = _locked;
  }

  function setLocked(bool _locked) public onlyOwner {
    locked = _locked;
  }

  function canTransfer(address _addr) public constant returns (bool) {
    if(locked){
      if(!allowedAddresses[_addr]&&_addr!=owner) return false;
    }else if(lockedAddresses[_addr]) return false;

    return true;
  }




  /**
  * @dev transfer token for a specified address
  * @param _to The address to transfer to.
  * @param _value The amount to be transferred.
  */
  function transfer(address _to, uint256 _value) public returns (bool) {
    require(_to != address(0));
    require(canTransfer(msg.sender));
    

    // SafeMath.sub will throw if there is not enough balance.
    balances[msg.sender] = balances[msg.sender].sub(_value);
    balances[_to] = balances[_to].add(_value);
    emit Transfer(msg.sender, _to, _value);
    return true;
  }

  /**
  * @dev Gets the balance of the specified address.
  * @param _owner The address to query the the balance of.
  * @return An uint256 representing the amount owned by the passed address.
  */
  function balanceOf(address _owner) public constant returns (uint256 balance) {
    return balances[_owner];
  }
}
/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances.
 */
function balanceOf(address _owner) public constant returns (uint256 balance) {
    return balances[_owner];
  }
/**
 * @dev Gets the balance of the specified address.
 * @param _owner The address to query the the balance of.
 * @return An uint256 representing the amount owned by the passed address.
 */