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: 6646 + 4878 - 8881 - 992 + 7276
Example Output: 4365

Example Input: 7457 - 9732 + 1691 + 2450 + 16 + 1610 + 1729
Example Output: 9693

Example Input: 8338 + 7035 - 2067 - 1210 + 9433 + 1604
Example Output:
-6457