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: 155 + 7497 + 4675 - 2329 - 9080 - 5510 - 2336 + 8701
Example Output: -1463

Example Input: 8979 - 7069 - 6830 + 3597 + 315 - 526
Example Output: 19492

Example Input: 2105 + 7070 - 2557 + 4209 + 1396 + 4590 + 6131 - 2265 - 4851
Example Output:
-11618