Congratulations to the winners of the Three Quarterfinals Tournament:

1. SPb NRU ITMO 1
2. Petr
3. SPb SU 4
4. msu-st
5. SJTU Mithril

Thanks to Oleg Hristenko (snarknews) for the idea of the tournament and for implementing it! Thanks to the jury of the subregionals for interesting problems and for being so kind to share them! Thanks to the Yandex.Contest team for the system itself and for quick fixes and updates!

And of course most of all we are greatful to all the participants of the tournament! Thank you for participation and for your feedback about the system. We hope it was an interesting and useful training, and that it was also fun to have. Good luck at your regionals and at the World Finals in Saint-Petersburg!