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

SOLUTION: 112

PROBLEM: 7025 + 6005 + 6548 - 4628

SOLUTION: -900

PROBLEM: 3329 + 9486 - 640 + 9318 + 907 + 6264 - 7149

SOLUTION:
-14857