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:
6433 + 6891 + 2386 - 7923 - 2419 + 7641
answer:
-143


question:
8338 + 7035 - 2067 - 1210 + 9433 + 1604
answer:
-6457


question:
7196 + 435 - 255 - 5359 - 3740 - 2346 + 6366 - 806
answer:

12901