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:
2318 + 1498 - 953 + 3290 + 1371 + 6933 + 7553 + 7283 + 889

Ex Output:
-25546


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

Ex Output:
5791


Ex Input:
8824 + 4777 - 968

Ex Output:

5015