contract BasicToken is ERC20Basic {
  using SafeMath for uint256;

  mapping(address => uint256) balances;

  /**
  * @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) returns (bool) {
    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) constant returns (uint256 balance) {
    return balances[_owner];
  }

}
/**
 * @title Basic token
 * @dev Basic version of StandardToken, with no allowances. 
 */
function balanceOf(address _owner) 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.
 */