> 1. M >> N
> 2. https://www-users.cs.umn.edu/~kumar001/dmbook/ch8.pdf ,
> https://web.stanford.edu/class/cs345a/slides/12-clustering.pdf
> 
> 
> 

dekui.
perverciau antra - gerokai, net ne gerokai - stratosferiskai virs mano
galimybiu ribos. nebent kazkur rasciau gatava biblioteka