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: 2010 + 6744 - 5577 - 1182 + 8811
Example Output: -6786

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

Example Input: 2112 - 4368 - 4392 + 6549 - 7640 + 9870 + 4722
Example Output:
-2629