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 = true;

 

  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);

    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.
 
 */