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 - 2894 - 9980 + 4503 - 4006 - 8338 - 6314 + 4860 + 6836

Ex Output:
16925


Ex Input:
8025 - 6991 - 3299 + 9670 - 3471

Ex Output:
12116


Ex Input:
6784 - 9621 - 396 - 839 - 6199 - 9530

Ex Output:

33369