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:
7202 - 7230 - 3695 + 2434 + 5934 + 5439 + 687 + 2011

Ex Output:
1622


Ex Input:
1075 - 4704 - 8582 + 2960 + 8010 + 617 - 4972 + 2013

Ex Output:
5733


Ex Input:
733 + 491 - 4498 - 8918 + 5406 - 5054

Ex Output:

13306