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Discussion of Problem 1463. Happiness to People!

How many edges in this graph? K<?
Posted by Alexander Prudaev 24 Nov 2006 22:48
autors must add this restriction in Statement of the problem
Re: How many edges in this graph? K<?
Posted by [SPbSU ITMO] WiNGeR 25 Nov 2006 00:01
K is bounded by this condition:
"It turned out that if Petrovich can fly (using one or several flights) from town i to town j, then there is exactly one way to do this"