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:
6040 + 5815 + 9288 + 5107 + 5697 + 7993 - 672 + 8297

Ex Output:
-35485


Ex Input:
7165 + 3630 + 9021 - 4140 + 319

Ex Output:
-1665


Ex Input:
7203 - 7459 + 5894 + 9657 + 5336

Ex Output:

-6225