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:
2474 + 4117 - 310 - 2018 - 6488 - 3458 - 1404

Ex Output:
12035


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

Ex Output:
-17191


Ex Input:
7095 - 4084 + 4316 + 1725 + 7422

Ex Output:

-2284