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: 812 + 6106 - 2904 + 7738 + 7655 - 6987

SOLUTION: -10796

PROBLEM: 5355 + 1451 - 3895 + 6213 + 743

SOLUTION: 843

PROBLEM: 4330 - 5920 + 5433 + 2630 + 4489 + 9320

SOLUTION:
-11622