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:
9403 + 6381 - 6599 - 2097 - 3046

Ex Output:
14764


Ex Input:
5661 + 5694 + 8212 - 8431 - 6340 + 4336 + 2022 - 5623

Ex Output:
5791


Ex Input:
1673 + 7696 + 9482 + 2494 - 6261 + 6508 + 5549 - 726 - 6948

Ex Output:

-16121