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: 9826 - 5862 + 4973 - 7723 - 8510 + 6631 + 9611 + 1510 + 489

SOLUTION: 8707

PROBLEM: 3254 - 200 + 4450 - 6393 - 2480 + 4564 + 9650

SOLUTION: -6337

PROBLEM: 6274 + 7819 + 8394 + 3810

SOLUTION:
-13749