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:
2537 - 3199 + 5925 + 8172 + 3564 + 8810

Ex Output:
-20735


Ex Input:
5125 - 607 + 8597 + 4804 + 5962 - 7812 - 176 - 9436 + 6198

Ex Output:
-2405


Ex Input:
5731 - 3254 + 1262 + 7583 + 6515 - 5082

Ex Output:

-1293