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: 8135 - 2883 + 7793 - 4176
Example Output: 7401

Example Input: 4533 - 9566 - 2287 + 4647 + 5056 + 6340 + 777 - 4673 + 2170
Example Output: 2069

Example Input: 9329 + 2396 - 942 - 8757 - 789 + 1184
Example Output:
16237