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:
1737 + 1422 + 9162 - 7244 + 6133
answer:
-7736


question:
8171 + 8357 + 171 - 3129 - 6929
answer:
9701


question:
78 - 3186 + 8912 + 8500 - 6931 + 6793 + 7640 + 6471 - 8432
answer:

-19689