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: 8737 - 2978 - 6717

Answer: 18432


Question: 9085 + 2845 - 6159 + 1404 + 2110 - 8797

Answer: 17682


Question: 8204 + 5813 - 6980 - 4989 + 4298 + 5133 - 3244 + 797

Answer:
7376