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: 3123 + 9519 - 2864 + 9440 - 756 + 252
Example Output: -12468

Example Input: 2219 - 6451 + 1224 + 2776 + 8750 - 8397 - 5833 - 9401 - 554
Example Output: 20105

Example Input: 3709 + 4976 + 9467 + 3316 + 9287 - 4722 + 3198 - 732 - 6270
Example Output:
-14811