instruction:
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.
question:
7581 + 8916 + 7584 + 7731
answer:
-16650


question:
8135 - 2883 + 7793 - 4176
answer:
7401


question:
2197 + 9071 + 1995 + 4763
answer:

-13632