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:
6485 + 8165 + 4482 - 4771 + 2626 + 5500 + 8702 - 1649 + 7002

Ex Output:
-23572


Ex Input:
8277 + 3525 - 4736 - 6292 + 8330 - 695 - 6827 - 6090

Ex Output:

21062