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:
2367 + 2751 + 138 + 6347 + 5297

Ex Output:
-12166


Ex Input:
5127 + 1503 + 9610 + 3348

Ex Output:
-9334


Ex Input:
6331 - 6897 - 4430 + 4082

Ex Output:

13576