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: 6639 - 5724 - 3521 - 6709 - 6185 + 6067 + 9560 - 9829 + 8371

SOLUTION: 14609

PROBLEM: 8135 - 2883 + 7793 - 4176

SOLUTION: 7401

PROBLEM: 9540 - 9387 - 8692 + 5008 - 4886 + 9427 + 3816

SOLUTION:
14254