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: 1592 - 2894 - 9980 + 4503 - 4006 - 8338 - 6314 + 4860 + 6836
Example Output: 16925

Example Input: 4682 - 6673 + 4582 - 2631 + 430 - 2808 + 6340 - 7201
Example Output: 12643

Example Input: 2817 - 8153 + 6533 + 8988 - 6471 + 7001 - 1079 + 7471
Example Output:
-11473