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: 1137 - 2413 - 5470 - 9797 + 2566

SOLUTION: 16251

PROBLEM: 8625 - 7177 + 4191

SOLUTION: 11611

PROBLEM: 4284 - 8233 + 2781 - 2769 - 5560 + 635 - 1706 + 1965 + 6794

SOLUTION:
10377