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: 7165 + 3630 + 9021 - 4140 + 319
Example Output: -1665

Example Input: 3844 - 5783 + 7487
Example Output: 2140

Example Input: 5576 - 1270 + 6240 - 4630 + 2615 + 8413
Example Output:
-5792