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: 365 + 3086 - 9118 - 8101 + 6550 + 80 - 1897 - 1498 - 8498
Example Output: 19761

Example Input: 3664 - 184 - 3835 + 2124 - 1567 - 8341 - 3628 - 8279
Example Output: 27374

Example Input: 749 - 7734 + 3498 - 6468 + 9623 - 6654 + 9316
Example Output:
-832