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: 5270 - 8957 + 6318 - 3390

SOLUTION: 11299

PROBLEM: 2537 - 3199 + 5925 + 8172 + 3564 + 8810

SOLUTION: -20735

PROBLEM: 1760 + 2722 + 2394 - 7534 - 3926 - 8104 + 1236 - 3513

SOLUTION:
18485