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: 5989 - 6394 + 3845 + 1679 - 5682 + 8226 - 674 - 1284
Example Output: 6273

Example Input: 6120 - 9271 - 7167 + 6916 - 2510 + 7854 - 7909 - 1960 - 3775
Example Output: 23942

Example Input: 2207 - 2566 + 8167
Example Output:
-3394