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.

Example Input: 1451 - 4488 + 4665 + 526 - 3690 + 9483
Example Output: -5045

Example Input: 6946 + 6834 - 1169 + 9756 + 2063 - 4750 - 425 + 1121 + 8155
Example Output: -14639

Example Input: 7397 - 3343 + 5353 + 7422
Example Output:
-2035