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:
4151 + 4432 - 9403 + 9800 - 901 + 5508 + 3237

Ex Output:
-8522


Ex Input:
6355 - 3589 + 7310 - 5161 + 9803

Ex Output:
-2008


Ex Input:
8576 - 5834 - 9145 - 4269 - 979 - 4257 + 5788

Ex Output:

27272