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: 2759 - 7972 - 7615 + 151
Example Output: 18195

Example Input: 3083 - 4468 - 7941 + 7484 + 2789
Example Output: 5219

Example Input: 332 + 6825 - 7014 + 9874
Example Output:
-9353