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:
1971 - 5591 + 4038 + 5571
answer:
-2047


question:
1137 - 2413 - 5470 - 9797 + 2566
answer:
16251


question:
2283 - 9204 + 120 - 6960
answer:

18327