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.

8025 - 6991 - 3299 + 9670 - 3471
12116

6874 + 7308 - 3041
2607

766 + 2197 + 3512 - 809 - 4921 + 9785 - 6429 + 9192 + 4840

-16601