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:
8243 + 5509 - 2652 - 916 - 1636 + 9824

Ex Output:
-1886


Ex Input:
875 + 1299 - 1721 - 4432 - 7136 - 2468

Ex Output:
15333


Ex Input:
49 + 8254 + 2552 + 9414 + 3718 + 3269

Ex Output:

-27158