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: 7409 + 7579 + 4759 + 5088

SOLUTION: -10017

PROBLEM: 3980 + 6122 + 3529 - 9952

SOLUTION: 4281

PROBLEM: 6259 + 903 - 652 - 9887

SOLUTION:
15895