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: 5270 - 8957 + 6318 - 3390

SOLUTION: 11299

PROBLEM: 1884 + 3670 - 3893 + 782 + 3288 - 7463 + 3214

SOLUTION: 2286

PROBLEM: 8459 - 6068 + 161 + 9763 - 5337 + 8620 - 7914 + 1740 - 9119

SOLUTION:
16613