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:
4733 + 1935 - 5989 + 2634 - 6798 + 9853 + 9265 - 14 - 4165

Ex Output:
-1988


Ex Input:
8979 - 7069 - 6830 + 3597 + 315 - 526

Ex Output:
19492


Ex Input:
7784 + 2158 - 756 + 4284 + 7932

Ex Output:

-5834