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

Example Input: 2144 - 4158 + 4207
Example Output: 2095

Example Input: 9554 + 4148 - 4027 - 2990 - 3910 + 374 + 9866
Example Output:
6093