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:
6063 + 9874 + 5939 - 5013 + 791

Ex Output:
-5528


Ex Input:
9231 - 9608 - 4765 - 8085 - 9489

Ex Output:
41178


Ex Input:
3549 - 5552 + 2861 - 7152 + 3466 - 704 + 4641 - 516

Ex Output:

6505