By stgatilov, 9 years ago, translation, In English,

Good afternoon.

One more codeforces format round takes place this evening. I'm the author of the contest problems. Artem Rakhov and Maria Belova helped me to prepare the problems. Great thanks to them and all codeforces "fighters"!

I wish you good luck and funny hacks!

P.S:  This round won't be rated. So your ratings won't change. That's because of severe problems with codeforces server. Read here for explanation.


Read more »

Announcement of Codeforces Beta Round #47
Announcement of Codeforces Beta Round #47
 
 
 
 
  • Vote: I like it
  • +49
  • Vote: I do not like it

By RAD, 9 years ago, translation, In English,

Good evening!

Soon many of you will have your examinations, and someone even have it now. I wish you excellent marks and many easy exams!

Thanks to Nickolay Kuznetsov, Gerald Agapov and Ivan Fefer for their help in preparation of the round.

Good luck!

Artem Rakhov and Codeforces team


UPD:

Ratings will be updated later

Read more »

 
 
 
 
  • Vote: I like it
  • +22
  • Vote: I do not like it

By Nerevar, 9 years ago, translation, In English,

Let me say the customary phrase "The series of school online Olympiads have ended!"

The organization of all the Olympiads was supported by Yandex and ABBYY companies. Overall 6 competitions took place, three team Olympiads and three individual ones. It is now high time we looked at the results and found the Olympiad winners. The two nominations (team contests and individual contests) were ratified individually – in each of them the results of the participants’ best two of three performances. Here are the links to the total results in each nomination:

Overall about 750 participants from all over the world had been registered during the series. Of course, the majority of them were Russian participants. As we can see, about 180 teams took part in the team contests and more than 400 school students took part in the individual contests.

After discussion with the WCS organizers the results were decided to be calculated in the following manner. In the team contests 34 best teams (that scored more than 175 points) are rewarded. Among them
  • 8 best teams receive first degree certificates:
    1. Gennady Korotkevich team (Gomel, Belarus)
    2. PhTL №1 #1 (Saratov, Russia)
    3. despise_oimaster team (China)
    4. Minsk-1 team (Minsk, Belarus)
    5. LIT: LIT_1 team (Alexandria, Ukraine)
    6. Fisher is a ball! team (Perm, Russia)
    7. Gomel-2 team (Gomel, Belarus)
    8. Mozyr-1 team (Mozyr, Belarus)
  • The teams that win places form 9th to 19th receive second degree certificates.
  • And the teams that win places from 19th to 33rd receive third degree certificates (note that the 33rd place is divided between two teams).

Read more »

 
 
 
 
  • Vote: I like it
  • +34
  • Vote: I do not like it

By natalia, 9 years ago, translation, In English,

Good day!

I invite everyone to take part in the last contest of the series of WCS olympiads for school students which is one of the regular Codeforces rounds at the same time. The start of the contest is  on the 12th of December, at 11:00 MSK.

The competition rules are ACM-ICPC rules, the duration of the contest is 3 hours.

Like the previous school individual olympiads, the contest will be rated for all participants (both for school students and others). Rating will be calculated according to the merged result table.

The authors of the problems are me and Dmitry Matov again. Thanks to Gerald Agapov and Artem Rakhov for their help in preparing the problems and to Maria Belova for translating the problem statements.

Good luck everyone!

UPD. The contest is over. The results are available. The winner of School Personal Contest is scottai1, the winner of Codeforces Beta Round is ilyakor. Congratulations to the winners!

The author's problem analysis is posted. Now problems G and H are added to the tutorial, too.

Thanks to everyone who participated in WCS series for school students, officially and unofficially!




Read more »

 
 
 
 
  • Vote: I like it
  • +85
  • Vote: I do not like it

By MikeMirzayanov, 9 years ago, translation, In English,
Hello!

Despite the fact that Artem Rakhov prepared the round - I'm writing this post, as he is currently training for the ACM-ICPC World Finals, writing a contest with the teammates.

Contest has been prepared by: Artem Rakhov, Gerald Agapov (congratulations on the "redness") and Maria Belova.

Wish you high rating,
MikeMirzayanov

Read more »

 
 
 
 
  • Vote: I like it
  • +15
  • Vote: I do not like it

By Nerevar, 9 years ago, translation, In English,

Greetings to everybody.

I would like to invite you to take part in the next Codeforces competition, which will be held on 5th of December at 11:00 MSK. This competition will be a part of WCS olympiads (click here for details) and usual Codeforces round at the same time.

This competition, as all previous WCS contests, is sponsored by Yandex and ABBYY.

The official rules of the competition are ACM-ICPC rules. The duration of the competition is 3 hours.

Those who don't participate in selection to WCS will be displayed as "out of competition" in the result table. But everybody will get rating for this competition according to the merged result table.

This time the authors of the problems are Natalia Bondarenko and I. Thanks to Edvard Davtyan for his help in preparing the contest and to Maria Belova for translating problem statements.

Don't forget to register in order to take part in the competition. Good luck at the contest!

UPD: It will be available PDF versions of the statements during the round (you may print them):

UPD: The results of the contest. Congratulations to tourist, the winner of WCS contest, and to Petr, the winner of beta round #43.

UPD: Links to problem tutorials: A,C,F,G and B,D,E.

Read more »

 
 
 
 
  • Vote: I like it
  • +40
  • Vote: I do not like it

By RAD, 9 years ago, translation, In English,
Good evening

Yesterday evening the Saratov university delegation returned from St. Petersburg, from the ACM-ICPC NEERC 2010/11 World Programming Championship semi-finals. If you haven't seen the final standings: 4 Saratov teams received diplomas, and we (Saratov SU 2) advanced to the finals. Saratov SU 1 was also among those, who advanced, that's pretty cool for their first time, but didn't advance because of the limitation "only one team from one university".

Also we have prepared a Div. 2 round. Thanks for prompt assistance to Edvard Davtyan, Gerald Agapov and Maria Belova.

Good luck!
Artem Rakhov and Codeforces team


Unfortunately, the discrepancy between author’s solution and statement of problem E was detected. We bring our apologies to all the participants. All solutions that have not been Accepted previously were rejudged. Thanks to member xcr for detection of the issue.

Read more »

 
 
 
 
  • Vote: I like it
  • +27
  • Vote: I do not like it

By MikeMirzayanov, 9 years ago, translation, In English,

One of the most important all-Russia (it's even greater! It's all-region) sport programming contests has approached us. Of course, I mean the ACM-ICPC NEERC 2010/11 World Programming Championship semi-finals. The names of those who will go to the jewel of Egypt, Sharm el-Sheikh will be known in less than a week. Undoubtedly, for some people this contest will become "the flop of 2010". I hope not to become one of them.

As you already know, the Saratov university delegation is going to get on the train tomorrow with some special extra luggage - we are taking about 300 T-shirts with us. Today we spent half a day sorting them into boxes, signing and counting them again. I even managed do divide 68 by 2 incorrectly that nearely led to the shortage of T-shirts :) However all the hardships are over, the presents are packed and we are ready to go. Let me remind you that all the official team members will receive Codeforces T-shirts (unfortunately, the reservists, coaches and the team leaders do not count).

The previous year in St. Petersburg was marked by our hasty visits to all the nearby pharmacies, it was marked by the fact that on the eve of the contest every team had a member with the fever of 38 degrees celsius, it was marked by the fact that one can never have enough paracetamol before the contest. We don't wish anybody to share this wonderful experience, so dress warm, take care of yourselves and of your teams' health!

Have a good journey and see you in St. Petersburg,
МikeMirzayanov

Read more »

 
 
 
 
  • Vote: I like it
  • +15
  • Vote: I do not like it

By cerealguy, 9 years ago, translation, In English,
Hi everyone.

The today's contest is presented by us: cerealguy and yaro. We used to study in school together and Volodya studied there with us. So he will be the contest's hero: Volodya is going to cook in a kitchen, visit a museum, try to crack a safe, travel to an unusual city and even use his magical abilities.

We are grateful to the Codeforces team and especially to Artem Rakhov who helped us to prepare the contest and wrote alternative solutions.

We hope problems will suit your taste.

Good luck!

Update: Solutions

Read more »

Announcement of Codeforces Beta Round #41
Announcement of Codeforces Beta Round #41
 
 
 
 
  • Vote: I like it
  • +40
  • Vote: I do not like it

By MikeMirzayanov, 9 years ago, translation, In English,

This year the ACM-ICPC regional contest of our region celebrates its 15th anniversary! We heartily congratulate the organizers, members of the jury and the technical committee. We would like to give our special congratulations to the Competition Director Vladimir G. Parfenov. Thank you very much for your work not only in organizing this competition, but also in developing the programming community throughout our region. Much has been done over 15 years. All the achievements of our region teams on the ACM-ICPC finals are also due to you. I have to say that NEERC is organized on the top level and has highly interesting sets of problems which all the participants find very exciting. We wish you new successes and new achievements!

This year the Saratov university delegation does not arrive in St. Petersburg empty-handed. We've decided to give presents to all participants. Each St. Petersburg NEERC participant will receive a Codeforces T-shirt. For us, delivering so many T-shirts will help to clarify who among our team members is the strongest programmer:)

The Codeforces team and Saratov University.

Read more »

 
 
 
 
  • Vote: I like it
  • +51
  • Vote: I do not like it