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: 6178 - 1637 - 8197 - 6437 + 4591 - 6995 + 3562 + 9474

SOLUTION: 11817

PROBLEM: 4533 - 9566 - 2287 + 4647 + 5056 + 6340 + 777 - 4673 + 2170

SOLUTION: 2069

PROBLEM: 6737 + 4338 - 4389

SOLUTION:
6788