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: 7525 + 263 - 1634 + 3644 + 6905 - 167
Example Output: -1486

Example Input: 3428 - 8444 - 2270 - 3241 - 1368 - 8884 - 6840 - 5265
Example Output: 39740

Example Input: 4205 - 3714 - 3997 - 9144
Example Output:
21060