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.

2837 + 8737 + 9015 - 7647 - 1903 - 3427 - 2034 - 3680 - 8565
12341

1834 - 2630 + 3119 - 3024 - 1805 + 5287 + 9826
-8939

6916 + 4824 + 3606 + 2609 + 9143

-13266