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:
4810 - 7988 + 5646 + 8226 + 5009 - 1013 + 7246 - 4319 - 1934

Ex Output:
-6063


Ex Input:
5316 + 506 - 8402

Ex Output:
13212


Ex Input:
5563 + 8616 - 7619 + 1278 + 6102

Ex Output:

-2814