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:
5127 + 1503 + 9610 + 3348

Ex Output:
-9334


Ex Input:
3782 + 4127 - 1265 - 1395 + 2430 + 6990 + 8573 + 8170

Ex Output:
-23848


Ex Input:
322 + 8943 - 6715 + 5735

Ex Output:

-7641