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: 2837 + 8737 + 9015 - 7647 - 1903 - 3427 - 2034 - 3680 - 8565

SOLUTION: 12341

PROBLEM: 7646 + 8509 - 4372 - 9840 - 6377 - 2924 + 869

SOLUTION: 21781

PROBLEM: 4417 + 9497 - 9266 - 4496

SOLUTION:
8682