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: 1834 - 2630 + 3119 - 3024 - 1805 + 5287 + 9826

SOLUTION: -8939

PROBLEM: 1661 - 8513 + 6817

SOLUTION:
3357