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

Ex Output:
5791


Ex Input:
5127 + 1503 + 9610 + 3348

Ex Output:
-9334


Ex Input:
3935 + 4203 - 8723 - 3567 - 5674 + 9240 - 810 + 4795

Ex Output:

4471