By Nerevar, 10 years ago, translation, In English

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 schoolchidren in Saratov. This time it is a round for participants from Division II. Round will start at unusual time for Codeforces: 12:00 MSK.

The problems were prepared by MikeMirzayanov and me, while Fefer_Ivan and Gerald helped us with writing alternative solutions.

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

Scoring distribution is standard: 500-1000-1500-2000-2500.

UPD: tutorial can be found here.

UPD 2: The model solution for problem E (unfortunately, there were only one model solution) was incorrect. But, the answers for all pretests were correct. After the round we fixed the solution. All submits for problem E were rejudged.

UPD 3: Results are final, ratings are updated.

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By RomaWhite, 10 years ago, translation, In English

Hello!

Codeforces Round #210 will take place on November 10 at 21.00 MSK and I am the author of the problems.

This is my first round on Codeforces and I hope everything will be well. I would like to thank Gerald Agapov(Gerald) and Vitalii Aksenov(Aksenov239) for helping me to prepare the round.

Good luck!

UPD.

Score distribution in first division: 500-1000-1500-1500-2000.

Score distribution in second division: 500-1000-1500-2000-2500.

UPD.

Congratulations to the winners!

First division:

  1. Egor

  2. PavelKunyavskiy

  3. scott_wu

  4. Dmitry_Egorov

  5. mmaxio

  6. enot110

  7. sevenkplus

Second division:

  1. _ZigZig_

  2. budalnik

  3. Ilya_Yakovlev

  4. Neodym

UPD.

Editorial

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By MikeMirzayanov, 10 years ago, translation, In English

Hello,

I know that the news will upset some of you: the round was moved 1.5 hours forward and it will start on 17:00 UTC.

As for me — the reason is very pleasant. The round original time coincided with a sniper's accuracy with the celebration of my daughter's birthday. Oh, St. Dijkstra, Tatyana is 2 years old! Last week I did many changes in judging backend (around caching) and I don't want in case of some issues to have a choice — to have a bad round or to have a bad celebration. I hope you understand!

Also I'm sure that new time will be more comfortable for some of you.

Hope to see you on the round!

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By MikeMirzayanov, 10 years ago, translation, In English

Welcome to 2013-2014 CT S01E09: 2011 German Collegiate Programming Contest (GCPC 2011) + GCJ 2009 R3 C-D. 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.

Good luck!








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By gridnevvvit, 10 years ago, translation, In English

Hello!

Soon (on November 2 at 12:00 MSK) you are lucky to participate in Codeforces Round #209 for Div. 2 participants. Traditionally, Div. 1 participants can take part out of the competition. Pay attention to the round begining time!

Problems have been prepared by me. I want to thank Gerald Agapov (Gerald) and Ilya Los (IlyaLos) 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, 2500, 2500.

UPD2: Congratulations to winners!

  1. cptbtptp
  2. FancyCoder
  3. Oyk
  4. E.B.
  5. orzkbc

UPD: Editorial

Good Luck!

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By MikeMirzayanov, 10 years ago, translation, In English

Welcome to 2013-2014 CT S01E08: 2013 ACM-ICPC Rocky Mountain Regional Contest (RMRC 2013) + GCJ 2009 WF C-D. 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.

Good luck!

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By gen, 10 years ago, translation, In English

Hi everyone!

The ACM ICPC season is in full swing, and the Northwestern European Regional Contest (NWERC) is not so far away from now. This is why the University of Cambridge held a selection contest for its 9 teams to determine the best (two or more) teams that will compete for a place in the world finals. In the end, the following teams took the top 5 places in order:

  1. Fin! IRO (pooya_, bogdan2412, VladGavrila)
  2. Beuler (borisgrubic, lm497, dcevid)
  3. Rooftop Cornflakes (eduardische, Chortos-2, Gullesnuffs)
  4. Zrakomlati (PetarV, mbucic4, dsobot)
  5. CRTCM (Voro94, Andip, hadesgames)

Congratulations!

The competition was held on the CodeForces platform and prepared by me and MikeMirzayanov. It was organized by University of Cambridge lecturer Dr Andrew Rice, eduardische Chortos-2 and the coach of the Latvian IOI team Sergey Melnik. The contest itself used the problem set of the Southern Subregional (NEERC) ACM ICPC quarterfinal 2013. Yes, the same quarterfinal whose online version will be held as a contest in the Codeforces gym on 27 October. ;] You may have just thought that you missed something unusual on CF, but nothing of the kind! The contest was run using a (still secret) future Codeforces tool in test mode; the name is groups.

This functionality will give the opportunity to hold contests only for a specific set of participants and spectators. A manager of the group adds users to the group and chooses their access restriction types. Only group members can participate in contests within this group, as well as observe their results. As you can see, groups are well-fit for on-site contests of various sorts. Indeed, this time we used the test version of this tool exactly for this purpose. Special thanks to MikeMirzayanov for the opportunity to try this new functionality! Now I'll leave a couple of teaser pictures for you: ;]

In conclusion, a few words about the selection itself. The number of problems solved by the top 5 teams is 10, 9, 8, 7, 6, which is a serious claim from the University of Cambridge compared to the results of the on-site of the same quarterfinal. ;] During the contest, the top three teams were engaged in an intense struggle for the first two places, but in the middle of the contest Fin! IRO made their way to the top and held a stable lead with many solved problems. Teams Beuler and Rooftop Cornflakes kept pace almost until the end of the contest, until the former solved a whole two problems in the last hour. The latter also then managed to solve two problems in the last hour, but Beuler got an accepted submission for problem D at 4:47 and secured the 2nd place, while Rooftop Cornflakes got the 3rd. The full results of the teams from Cambridge will be embedded into the results of the gym contest on the problems from the Southern (NEERC) quarterfinal.

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By MikeMirzayanov, 10 years ago, translation, In English

Hello,

Did you already notice that this Sunday it will be Internet-version of 2013-2014 ACM-ICPC, NEERC, Southern Subregional Contest? It will start on 07:00 (UTC).

The contest will be held in Gym. I invite teams mostly because the contest was designed as a team contest.

I'm sure this contest is a great way to train before coming regional (or subregional for some of you) ACM-ICPC contest.

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By Berezin, 10 years ago, translation, In English

Hi everybody!

When you've seen my nickname you probably thought: "Finally! At least this round is not made by Sereja! And you are right! I, Dmytro Berezin(Berezin) give this round... and my neighbour Sergii Nagin(Sereja)

The action will take place in Friday, 25th october, 19:30.

Thanks to Gerald Agapov(Gerald) and Maria Belova(Delinur) for help in preperation and translation of problems respectively.

Thanks to Yaroslav Tverdokhlib(KADR) for help in testing.

You have to help Dima equip his personal life :)

The point values for this cause is 500 1000 1500 2000 3000.

Sergii strongly recommends you to read all the tasks.

I highly recommend you also to try to solve them.

Thank you for your attention, and have a successful round!

Tutorial: http://codeforces.com/blog/entry/9334

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By MikeMirzayanov, 10 years ago, translation, In English

Welcome to 2013-2014 CT S01E07: Codeforces Trainings Season 1 Episode 7. 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.

Good luck!

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