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: 3681 + 1303 + 5556 + 9895 - 5012 - 6662
Example Output: -1399

Example Input: 9634 + 5896 + 2965 + 6949 - 2226 + 9649 - 3599 - 7110
Example Output: -2890

Example Input: 1471 + 6113 + 3177 - 2507 - 2358 + 6654
Example Output:
-9608