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

    BalanceSheet public balances;

    uint256 totalSupply_;

    function setBalanceSheet(address sheet) external onlyOwner {
        balances = BalanceSheet(sheet);
        balances.claimOwnership();
    }

    /**
    * @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) {
        transferAllArgsNoAllowance(msg.sender, _to, _value);
        return true;
    }

    function transferAllArgsNoAllowance(address _from, address _to, uint256 _value) internal {
        require(_to != address(0));
        require(_from != address(0));
        require(_value <= balances.balanceOf(_from));

        // SafeMath.sub will throw if there is not enough balance.
        balances.subBalance(_from, _value);
        balances.addBalance(_to, _value);
        emit Transfer(_from, _to, _value);
    }

    /**
    * @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 balance) {
        return balances.balanceOf(_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
 */