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.

6874 + 7308 - 3041
2607

2653 + 9718 - 3237 + 2973 - 6895 - 18
112

112 + 6885 + 1353 + 5532 - 712

-12946