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: 6946 + 6834 - 1169 + 9756 + 2063 - 4750 - 425 + 1121 + 8155
Example Output: -14639

Example Input: 3083 - 4468 - 7941 + 7484 + 2789
Example Output: 5219

Example Input: 7955 - 4521 - 2426 + 5624 + 2050 - 6530 - 2701
Example Output:
16459