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:
4272 + 6013 - 9409 - 6130 + 9575 + 2198

Ex Output:
2025


Ex Input:
8760 + 4583 - 2942 - 3854 - 5061 + 31 - 5965

Ex Output:

21968