Hello, Codeforces!
I am very glad to invite you to the Codeforces Round #843 (Div. 2), which will take place in Jan/10/2023 14:15 (Moscow time). This round will be rated for the participants with rating lower than 2100.
My sincere thanks to:
Wind_Eagle, BaluconisTima, kartel и Aleks5d for the tasks ideas, and also Wind_Eagle, BaluconisTima, kartel, VEGAnn и Vladik for preparing the tasks.
andrew, gepardo, 244mhq, vilcheuski the rest of the author team, without whom this round would not have happened.
BaluconisTima for the splendacious pictures, which complement each problem.
MikeMirzayanov for Codeforces and Polygon platforms.
You for participating in this round.
You will have 2 hours and 30 minutes for solving 6 tasks, one of which will be divided into easy and hard verions. The round is based on the problems from the first day of Belarusian Regional olympiad. We kindly ask all Belarusian pupils who participated in this olympiad, to refrain from taking part in this round and discussing the problems publicly before the round ends.
I hope you will enjoy the round!
Round testers (not complete list): MathBoy, FairyWinx, nnv-nick, K1ppy, olya.masaeva, Septimelon, PavelKorchagin, 4qqqq.
Score distribution: (500+1000)-1000-1500-2000-2000-2500.
UPD. Score distribution was changed: (500+500)-1000-1500-2000-2250-3000.
