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:
5279 - 2949 - 9227 - 4200 - 3399 - 5680 - 9769 + 7051 + 2369

Ex Output:
31083


Ex Input:
6817 + 2415 - 9368 - 2334

Ex Output:
16104


Ex Input:
2007 - 1732 + 5904 - 6359 - 6974 + 2153 - 6242 + 6475

Ex Output:

8782