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

Ex Output:
-23848


Ex Input:
171 - 966 + 1234 - 1722 - 4406 + 9773 - 1161

Ex Output:
-2581


Ex Input:
5442 - 8293 + 8744 + 27 + 4403 - 2316 + 5194 + 3810 - 6829

Ex Output:

702