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:
3980 + 6122 + 3529 - 9952
answer:
4281


question:
1540 + 6977 + 9400 - 5524 - 1970 + 8397 - 6006 + 3183
answer:
-12917


question:
40 + 3566 + 1378 - 3392 - 4258 - 2668
answer:

5414