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:
6051 + 6310 + 7813 + 2282 - 7601 + 4598 - 1928 - 9696 - 6497

Ex Output:
10770


Ex Input:
136 + 9772 - 2848 - 4980 + 6156 - 883 + 5407 + 3211

Ex Output:
-15699


Ex Input:
6570 + 2902 + 9219 - 6971 + 6886 + 765

Ex Output:

-6231