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:
4377 + 5604 - 8336 - 2652

Ex Output:
9761


Ex Input:
1344 + 7632 - 4322

Ex Output:
-1966


Ex Input:
8553 - 9759 - 5794 + 7095 + 4866 - 7347

Ex Output:

19492