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:
9824 + 9255 - 8146 - 8393 - 6949 - 3238 + 2641 - 4068 + 4633

Ex Output:
24089


Ex Input:
7646 + 8509 - 4372 - 9840 - 6377 - 2924 + 869

Ex Output:
21781


Ex Input:
2227 + 750 - 8690 - 3332 + 718 + 6483 - 1857

Ex Output:

8155