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: 2605 - 3453 + 5543 + 2400 + 8799 + 3298 + 4981 + 9739 - 178
Example Output: -28524

Example Input: 6789 - 6255 + 3477 - 8628 + 3410 + 5875 + 7308 + 2357
Example Output: -755

Example Input: 7976 - 9189 - 3349
Example Output:
20514