In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

Example Input: 2443 + 7109 + 4711
Example Output: -9377

Example Input: 3997 - 5279 - 8866 - 8214 - 3538 + 6690 - 4565 + 30
Example Output: 27739

Example Input: 4143 + 5469 + 8704
Example Output:
-10030