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:
8213 - 7166 - 3524 + 2770 + 767 - 3629 - 7894
answer:
26889


question:
146 - 5209 + 892
answer:
4463


question:
3467 - 9504 - 3715 + 7361 + 5517 + 377 + 6896 + 4518 - 3749
answer:

-4234