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:
3881 + 3747 + 6493 - 7538
answer:
1179


question:
1278 + 4628 + 2357 + 3694 + 5775 + 8542 - 793
answer:
-22925


question:
6420 + 6956 + 9478 - 4046
answer:

-5968