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:
5634 - 7997 + 8248 + 1465 - 3986

Ex Output:
7904


Ex Input:
2045 - 2088 - 8387 + 5185 + 2275 - 1337 - 2494 - 1644 + 9737

Ex Output:
798


Ex Input:
9011 + 2376 + 6682 + 7626 + 1156 - 7292 - 1641 + 9608 + 3562

Ex Output:

-13066