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:
298 + 1699 + 1367 + 5001
answer:
-7769


question:
2837 + 8737 + 9015 - 7647 - 1903 - 3427 - 2034 - 3680 - 8565
answer:
12341


question:
8935 + 83 - 2478
answer:

11330