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: 23 - 7991 - 1064 + 8364
Example Output: 714

Example Input: 6818 - 9528 + 3365 - 496 + 1035 - 9444 + 2617 - 5541 - 2219
Example Output: 27029

Example Input: 4183 - 7349 + 9799 + 197 + 9582 - 4649
Example Output:
-3397