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:
4331 - 362 - 8646 - 8722 + 6424 + 4083 - 579 + 4561
answer:
7572


question:
509 + 4840 + 5618 + 9163 + 802
answer:
-19914


question:
6494 + 7489 - 5008 + 7497
answer:

-3484