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: 1229 - 4354 + 912 - 1766

SOLUTION: 6437

PROBLEM: 981 + 3338 + 96 + 3479 + 574 + 2567 + 3009 + 2356 - 4663

SOLUTION: -9775

PROBLEM: 5105 - 3307 + 4959 - 2534 + 6237 + 1762 - 1828 + 7406

SOLUTION:
-7590