TASK DEFINITION: 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.
PROBLEM: 3186 + 271 - 7916

SOLUTION: 10831

PROBLEM: 3997 - 5279 - 8866 - 8214 - 3538 + 6690 - 4565 + 30

SOLUTION: 27739

PROBLEM: 9935 - 809 + 9857 + 6503

SOLUTION:
-5616