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

Example Input: 8625 - 7177 + 4191
Example Output: 11611

Example Input: 5250 - 8362 - 7763 + 3626 + 7173 - 1160 - 4843
Example Output:
16579