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: 3968 + 5044 + 8713

SOLUTION: -9789

PROBLEM: 3980 + 6122 + 3529 - 9952

SOLUTION: 4281

PROBLEM: 9871 + 1885 + 1367 - 8542

SOLUTION:
15161