GRAPART - EDITORIAL

I must admit, before you realize that K is no greater than 2, the problem description looks intimidating. :slight_smile:

exactly true… getting it now… easiest proof :slight_smile:

Now I need proofs for wf<=Rl and Wo<=Ro+Rf XDD…

thanks though…

that is easy, Wf are the fathers of Rl, so wf<=Rl; Wo are the fathers of Ro and Rf, so Wo<=Ro+Rf