Hello, Codeforces!

I have the pleasure to invite you to the round #343 which is going to take place on Saturday! This round is consisted of 5 problems and you have 2 hours (as usual) to solve them.

The problemsetters are Mohammad Amin Vahedinia (Me) (MrNull), Daneshvar Amrollahi (dkjsfkhg) and Alireza Tofighi (ATofighi). We would also like to thank Alireza Tofighi (ATofighi) and Ali Asadi (aliasadiiii) for testing this round and Ali Bahjati (LiTi) for helping us preparing this round.

We thank Gleb Evstropov (GlebsHP) for his help in preparing the contest, Maria Belova (Delinur) for translating the statements into Russian, and, of course, MikeMirzayanov for unique Codeforces and Polygon platforms.

This contest's Hero is Famile Door and his friends who are preparing his birthday party!

UPDATE 1: Scoring Distribution is 500 — 1000 — 1750 — 2000 — 2500

UPDATE 2: Editorial is ready HERE

UPDATE 3: System Testing is finished you can see the standings here: результаты

Congrats to the div2 Winners:

1. rakhashov.maksat

2. DarthMaul

3. TakeTheAegisIDontNeedIt

4. ykaya

5. abcdef6199

Also congrats to the div1 Winners:

1. Um_nik

2. anta

3. Nerevar

4. kmjp

5. vintage_Vlad_Makeev

Best of luck to everyone!