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:
1592 + 7031 - 1902 + 5922 - 1351 + 8340 - 2032

Ex Output:
-14416


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

Ex Output:
5733


Ex Input:
6694 + 8723 - 1592 + 7366 + 9388

Ex Output:

-17191