Hello.

Codeforces Round #219 will take place on December 13th at 18:00 MSK for both Div.1 and Div.2 participant. Make sure that it will be held unusual　time.

Problem setters are kagamiz and DEGwer, and we thank Gerald for helping us to hold this contest, and Delinur for the translation, and MikeMirzayanov for systems.

The score distribution will be uploaded soon, but probably we use the standard scoring system.

UPD1: The score distribution is standard, 500-1000-1500-2000-2500 for both division.

UPD2: Problem B from Div.2 and problem C from Div.1 have some problems, so all submissions to these problems are rejudged. I'm very sorry.

UPD3: Anyone who gets AC two or more times, because of resubmit before clarification, please, write to Gerald, your submissions that should be skipped. Sorry for inconvenience.

UPD4: Now system test has finished, congratulation for winners!!!

Division 1:

1.jqdai0815

2.tourist

3.PavelKunyavskiy

4.dasko1

5.al13n

Division 2:

1.Hwhitetooth

2.pcnc_zLq

3.wuyiqi

4.prok

5.aaaaajack

And also congrats for rng_58 and permin, who got AC on Div.1 E problem!!

UPD5: Now editorial is uploaded here.

Greetings to the Codeforces community!

Today in Saratov there is a second day of the local school competition, so we again introduce you a round based on school problemset. Round is for participants from Division II. Members of the first division can participate out of competition, as usual.

Round starts on 8-th of December at 09:00 UTC

Problems were prepared by employees and students of Saratov State U, including MikeMirzayanov, Fefer_Ivan, NALP, HolkinPV and me.

Scoring: 500-1000-1500-2000-2500.

UPD: Congratulations to the winners:

1. asalwaysdontbeahero
2. VKRNVO5
3. chnluyi
4. pkwv
5. Xe4NIK

UPD: tutorial.

Please take a notice that recently the schedule has been changed. Twice.

Greetings to the Codeforces community!

I'm glad to announce that we again decided to introduce a round based on one of the programming olympiads for schoolchildren in Saratov. This time it is a round for participants from Division II. Round will start at unusual time for Codeforces: Dec. 7, 07:00 UTC.

The problems were prepared by employees and students of Programming Competitions Training Center of Saratov State U.

Members of the first division can participate out of competition, as usual.

Currently we are planning to use dynamic scoring system.

UPD: Moved from 09:00 to 07:00 because of Kotlin Challenge.

UPD 2: Tutorial has been published.

Tomorrow (December, 1st) at 06:00 (UTC) Northeastern European Regional Contest 2013 will start. Use the link to view the current stangings during the contest.

The contest will take place in four cities at the same time: Saint-Peterburg, Barnaul, Tbilisi, Tashkent. Looking to the standings of the practice session it is clear that totally 235 teams will fight for the honour to take part in the Finals.

NEERC takes place since 1996. Here are NEERC Champions:

I wish all the teams to show their strongest sides. Good luck!

P.S. For sure, I will be rooting for Saratov State University. You know well our leading team: Gerald, Fefer_Ivan, kuviman.

P.S. The contest finished. My congratulations to:

• The 1st place: SPb SU 4 (Kunyavskiy, Egorov, Suvorov)
• The 2nd place: Moscow SU 1 (Pyaderkin, Evstropov, Omelyanenko)
• The 3rd place: Saratov SU 1 (Agapov, Fefer, Kudasov)

The complete standings are here.

Hello!

A few hours later, on November 29th at 19:30 MSK, you are lucky to participate in Codeforces Round #216 for Div. 2 participants. Traditionally, Div. 1 participants can take part out of the competition.

Problems have been prepared by: Gridnev Vitaliy (gridnevvvit) and Los Ilya (IlyaLos).

We want to thank Gerald Agapov (Gerald) and Sergey Sukhov (Serega) for help in preparation of this round, Mary Belova (Delinur) for translation of statements, Michael Mirzayanov (MikeMirzayanov) for marvelous Codeforces and Polygon systems.

UPD1: Scoring will be next: 500, 1000, 1500, 2000, 2500.

UPD2: It was a misprint with scoring system, now it is correct.

UPD Contest finished, congratulations to winners!

1. Dshovn
2. WhitedarkWalker
3. hexor
4. Pandii
5. Ronnoc_2

Good Luck!

Welcome to 2013-2014 CT S01E012: Codeforces Trainings Season 1 Episode 12. The training duration is 5 hours. It is opened for teams as well as for individual participants. After the end you may use the practice mode to complete problem solving. Also it will be availible as a virtual contest for whose of you who can't take part today. Please, do not cheat. Only fair play!

It is possible that the problems will be too easy for some participants, it is possible that we will add some problems.

The registration will be available on the Gym page and will be opened until the end of the training. Be careful registering team: please, choose only whose members who will take part in the contest.

Please do not take part in the contest if you have already solved the contest problems before.

Good luck!

Hello everyone!

Codeforces Round #215 will take place on Tuesday, November 26th at 19:30 MSK. This is my ninth Codeforces round and I hope not the last.

I'd like to thank Gerald, Berezin, Aksenov239, MikeMirzayanov and Cenadar for helping me to prepare the round. Special thanks to Delinur for translation of all problem statements into English.

I strongly recommend you to read ALL the problems.

Problem point values div1: 500-1000-1500-2000-2000
Problem point values div2: 500-1000-1500-2000-2500

Gl & hf ! :)

Contest is over, thank you for participation. Sorry for mistake in problem A. Hope, that problems were interesting for you, also I hope that bugs didn't spoil your mood.
Have a nice evening! :)

Also I'd like to congratulate rng_58, he have 3010 rating now!

Tutorial.

Good day! The event named Codeforces Round #214 (Div. 2) will take place soon. My name is Dmytro Berezin and i am the author. This is my second round and Sereja hopes that this is the last one :)

Private life — is such thing, which can't contains too much happiness, so you should help Dima and Inna again. In addition, Sereja is not a negative character! He is rather some kind of circumstances you should fight with... Sometimes.

I want to thank Gerald Agapov (Gerald) for his help in round preparation, Maria Belova (Delinur) for statements translations, and Sergii Nagin (Sereja) for the fact he kindly (leaves the room sometimes) agreed to help in testing.

Sergii sends greetings and strongly recomend to read ALL tasks.

Point distributions will be announced. Honestly. And the distribution is: 500-1000-1500-2000-2500

Thank you for your time, have a nice round!

Hello, Codeforces!

Today I would like to tell you about new Codeforces feature: about groups. Now you can create a group , invite people into it, add members to group and organize contests inside a group.

Create a Group

Only Div.1 coders can create a group. Good reason to increase rating, right? If you have rights to create a group on the Groups page, it will be a special link. Except name, you can specify:

• description (feel free to use simple HTML)
• logo: it will shine on each group’s page!
• related to group website URL