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:
9050 + 7188 + 3589 + 8762 + 268 + 1995 + 6080 - 4900

Ex Output:
-13932


Ex Input:
3069 + 7287 - 8451 - 5822

Ex Output:

10055