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:
9751 - 3599 + 7441 - 2176 + 2662 + 9430 + 8207 + 5927 - 8529

Ex Output:
-9612


Ex Input:
3428 - 8444 - 2270 - 3241 - 1368 - 8884 - 6840 - 5265

Ex Output:
39740


Ex Input:
7427 - 4526 - 8349 - 2938 - 1620 - 321 + 1910 + 523 + 5624

Ex Output:

17124