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.

Ex Input:
9634 + 5896 + 2965 + 6949 - 2226 + 9649 - 3599 - 7110

Ex Output:
-2890


Ex Input:
8338 + 7035 - 2067 - 1210 + 9433 + 1604

Ex Output:
-6457


Ex Input:
1142 - 5659 - 3412 + 9409 - 586

Ex Output:

1390