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:
6439 - 6685 + 6156 - 3314 + 6845 - 6872
answer:
10309


question:
6946 + 6834 - 1169 + 9756 + 2063 - 4750 - 425 + 1121 + 8155
answer:
-14639


question:
1628 - 6350 - 812
answer:

8790