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: 4331 - 362 - 8646 - 8722 + 6424 + 4083 - 579 + 4561
Example Output: 7572

Example Input: 7163 + 3916 + 4926 + 2532 - 2743 - 5389 + 7290
Example Output: -3369

Example Input: 2605 + 7678 - 206 + 7156 - 6380 - 2327
Example Output:
-3316