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:
9842 + 5573 - 5322 - 4612 + 489 - 1030 + 6611 + 2045 + 9627

Ex Output:
-3539


Ex Input:
8625 - 7177 + 4191

Ex Output:
11611


Ex Input:
9600 - 6935 + 8924 - 28 - 9714 - 3705

Ex Output:

21058