Come on!
That was dumb. The sound/music was cool... but that was about it.
the solution... doesn't matter what number you pick, because you double it, then half it... which means you did nothing to it. Then you subtract it with the same number... means you have nothing left. The only thing extra is the "add 1", but you halfed that too, so you're left with 0.5. That was ridiculous.