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: 6927 - 2357 + 8911 - 4674 - 2728 + 9726 - 1304 - 3277
Example Output: 2630

Example Input: 3664 - 184 - 3835 + 2124 - 1567 - 8341 - 3628 - 8279
Example Output: 27374

Example Input: 2783 + 1598 - 8548 - 1234 - 2257 - 6405 - 8862
Example Output:
28491