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: 8098 + 8922 - 9716 + 5360
Example Output: 3532

Example Input: 9240 - 5321 + 7584 - 9605 + 9674 - 5556 + 6400
Example Output: 6064

Example Input: 3340 - 7794 - 9750
Example Output:
20884