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: 5709 + 8211 + 3945 + 1143 - 7258

SOLUTION: -332

PROBLEM: 4310 + 5678 + 9065 - 8181 + 5925 - 3189 + 558

SOLUTION: -5546

PROBLEM: 6642 + 2431 + 9538 + 1703 - 7310 + 2557 - 4485 - 3377

SOLUTION:
5585