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: 7291 - 941 - 33 + 3812 + 4851 - 8716 - 6838 - 740
Example Output: 15896

Example Input: 4810 - 7988 + 5646 + 8226 + 5009 - 1013 + 7246 - 4319 - 1934
Example Output: -6063

Example Input: 2605 - 3453 + 5543 + 2400 + 8799 + 3298 + 4981 + 9739 - 178
Example Output:
-28524