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

Example Input: 1649 + 4642 + 613 - 7051 - 8575
Example Output: 12020

Example Input: 100 + 577 + 5404 - 3610 - 1216
Example Output:
-1055