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: 1971 - 5591 + 4038 + 5571

SOLUTION: -2047

PROBLEM: 7525 + 263 - 1634 + 3644 + 6905 - 167

SOLUTION: -1486

PROBLEM: 3552 - 7725 + 8834 - 638 + 9197 - 8548 + 7442

SOLUTION:
-5010