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: 7240 - 3294 - 2859 + 1798 + 9958 - 6797
Example Output: 8434

Example Input: 981 + 3338 + 96 + 3479 + 574 + 2567 + 3009 + 2356 - 4663
Example Output: -9775

Example Input: 9092 - 1315 + 1085
Example Output:
9322