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:
3968 + 5044 + 8713
answer:
-9789


question:
7961 - 5474 + 4234 - 4358 - 7627 - 2291 - 9771 + 9867 - 813
answer:
24194


question:
8630 - 9965 + 4174 - 9729 + 2104 + 4108
answer:

17938