Roman Yaremchuk(nice), Inna Kyselova(nice), Kirill Konopitsyn(nice), Alexender Zabolotnyy(nice), Vsevolod Olenich(nice), Oleg Sheremet(nice), Viktor Sevidov(nice), Dmytro Petrychenko(nice), Andrey Mis\'kov(nice), ALENA FOMINA(nice), Vlad Gedziuk(nice), Vlad Gedziuk(interesting), Yakov Stepanov(important), Yakov Stepanov(interesting)