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: 1420 - 1910 - 3500 + 9535 + 3807 - 5009 - 1271 - 3426

SOLUTION: 3194

PROBLEM: 3394 - 2316 - 9713

SOLUTION: 15423

PROBLEM: 3681 + 8422 + 717 - 1013 + 7821 - 5884 - 2064

SOLUTION:
-4318