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: 8929 - 6145 + 8551 - 1836 + 9159

SOLUTION: -800

PROBLEM: 3123 + 9519 - 2864 + 9440 - 756 + 252

SOLUTION: -12468

PROBLEM: 7882 - 4233 + 1322 - 5458 + 6968 + 8580 + 7016 - 4412

SOLUTION:
-1901