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:
5292 + 3623 + 7450

Ex Output:
-5781


Ex Input:
1016 - 3280 + 5683 - 2981 + 3388 + 8466

Ex Output:

-10260