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:
9237 + 5388 - 46 + 2616 + 8227 - 3578 - 5065 + 1176

Ex Output:
519


Ex Input:
3083 - 4468 - 7941 + 7484 + 2789

Ex Output:
5219


Ex Input:
8954 + 3487 - 3259 + 4893 - 3340 + 376

Ex Output:

6797