i'm always stunned how original a classic bb problem can be re-presented. this is a great level with so many different ways to the solution. five years ago it would be an official one. what more to say than 5/5.
i'm always stunned how original a classic bb problem can be re-presented. this is a great level with so many different ways to the solution. five years ago it would be an official one. what more to say than 5/5.