There is a very interesting problem from neerc subregional, let's discuss it here

Problem F Formula

neerc.ifmo.ru/past/2007/northern/problems.pdf

Good day for everybody!!! Recently I found a very nice problem from NEERC 2003 about graphs. I don't have any ideas to solve. Thanks if anyone will write. problem B. Bring Them There http://neerc.ifmo.ru/past/2003/problems.pdf

Добрый день всем!!! Попалась интересная задача на графы с NEERC задача F Reform к сожелению никаких идеи нету. Буду признателен если подскажете какие нибудь идеи. Thanks! link: http://neerc.ifmo.ru/school/io/archive/20051224/problems-advanced.pdf