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:
1320 + 3923 - 1080 - 3521 - 8998 + 4479 - 2559 - 7680
answer:
16756


question:
6894 + 3927 + 7884 - 4132 - 6563 + 4281
answer:
1497


question:
6903 - 5142 - 9488 + 3601 - 2155
answer:

20087