contract BasicToken is ERC20Basic {

  using SafeMath for uint256;



  mapping(address => uint256) internal balances;



  uint256 internal totalSupply_;



  /**

  * @dev Total number of tokens in existence

  */

  function totalSupply() public view returns (uint256) {

    return totalSupply_;

  }



  /**

  * @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(_value <= balances[msg.sender]);

    require(_to != address(0));



    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 view returns (uint256) {

    return balances[_owner];

  }



}
/**
 
 * @title Basic token
 
 * @dev Basic version of StandardToken, with no allowances.
 
 */
function totalSupply() public view returns (uint256) {

    return totalSupply_;

  }
/**
 
 * @dev Total number of tokens in existence
 
 */