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.

Ex Input:
9864 - 5325 - 3230 - 5129 + 7733 + 3498 - 9250

Ex Output:
21567


Ex Input:
812 + 6106 - 2904 + 7738 + 7655 - 6987

Ex Output:
-10796


Ex Input:
6163 + 7356 + 5264 - 4766 + 9373 + 1271

Ex Output:

-12335