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: 9491 + 8647 - 4571 + 8815 - 4816 - 8552 + 1794

SOLUTION: 8174

PROBLEM: 7388 - 3073 - 1891 + 2180 + 1361 - 9381 + 566 - 2665

SOLUTION: 20291

PROBLEM: 7833 + 6537 - 6904 + 6418

SOLUTION:
1782