Sergo Travelian(nice), Oleg Sheremet(nice), Philippe Campeau(nice), Dmytro Petrychenko(nice), Nataliya Kolisnichenko(nice), Andrey Mis\'kov(nice), Nikola Zmievskiy(nice), Vsevolod Olenich(nice), Kirill Konopitsyn(nice), Kirill Konopitsyn(interesting), Alexender Zabolotnyy(nice), Family Kuzhel(nice), Family Kuzhel(interesting), Yakov Stepanov(nice), Yakov Stepanov(interesting)