[PixZxZxA]

I probably used the wrong word. I meant it took me two days in order to really understand the algorithm, to understand different implementations and find all the little details, to get some kind of intution that makes me able to code the algorithm just from my head in an efficient way.

[marvy]

Oh. Then I suppose two days is quite good. I don't think you really need quite that depth, but if you want it, I don't know if doing it much faster is possible. (It might be possible, I just don't know.)