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:
5371 + 2365 + 9586 - 6312 - 8369 - 7840 - 1823

Ex Output:
17764


Ex Input:
5798 + 7484 + 9307 + 3033 - 7750 + 6782 + 2330 + 2957 - 714

Ex Output:
-17631


Ex Input:
4618 + 8021 - 3435 - 1913 - 6177 + 7824 + 8329 + 4498

Ex Output:

-12529