Codeforces Beta Round #6
By MikeMirzayanov, 15 years ago, translation, In English
Welcome to the Codeforces Beta Round #6.

It will be good to see your feedback and impressions in the comments.

Wish you high rating,
MikeMirzayanov.

UPD. It seems the problem D has some tricky issues around judge solutions. Judge solutions will be fixed and the problem will be rejudged. If it will affect many participants, the contest will not be rated.

UPD 2. We have reduced constraints in the problem D and made rejudge. No solution passed tests. So the rejudge affected significantly only 4 participants, who solved it during the contest. But all of them increase their rating if we will count the contest as rated event. So we decided to make it rated and put problem with lowered constraints into the practice.

UPD 3. And by the way, the round tutorial is waiting for a volunteer. The tutorial should be in Russian and in English. It will be published on the homepage and later will be available via special link from the contest page.

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Source Code Viewing
By MikeMirzayanov, 15 years ago, translation, In English
Hello to everyone.

The latest news - now you are able to see the source code of the solution. During the contest you can view your own solutions only, but when the contest is finished you can view the solutions of any other participant. The table with the solutions is available via the problemset page, the solutions there are sorted by the program length. Pay attention, please, that you are free to change the sorting criteria using the option at the bottom of the table. 
There is another principle that gives you the chance to view the source codes of solved (during the contest or practice) solutions only. Personally, I regard the principle "everyone sees everything" as more suitable for our regular contests.  Am I right?

When you run a contest within your private community, you'll be able to set up your own principle for viewing solutions (or to switch off this function at all). But this functionality is under construction now. 

Wish you high rating,
MikeMirzayanov

UPD. Standings page is improved. You may double-click into a table cell (or use Ctrl+click) to view the submissions history.

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Codeforces Beta Round #5
By MikeMirzayanov, 15 years ago, translation, In English
Welcome and good luck on the round! 

I'd like to remind that if you have any questions on the problems, the best way to ask them is to use the web interface on the problems page. 

Later in the same post we will discuss the round. 

Wish you high rating,
MikeMirzayanov.

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Announcement of Codeforces Beta Round 5
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Beta Round #4 - Tutorial
By at1, 15 years ago, translation, In English

A. Watermelon

Only if w can be presented as 2m + 2k watermelon can be divided to two even parts.
So w = 2(m+k), where m, k ≥ 1, that is
(w ≥ 4 и w - even) - necessary and sufficient condition for watermelon dividing.

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Time of Codeforces Beta Round #5
By MikeMirzayanov, 15 years ago, translation, In English
Hello, everybody. 

At this point we have already decided on the date of Codeforces Beta Round#5: it's Saturday, March 20. The exact time is still unknown. I do want to find the best time suitable for most participants. Please, express your ideas in the comments - of course, you should not come up with the time that suits only you, but suggest the most suitable time for the majority.  

Wish you high rating,
MikeMirzayanov

UPD.  Thanks to everybody who wrote comments - I've read them all. The venture proved to be useful. Without your help, I wouldn't have been able to take into consideration all those factors which can affect the number of participants.  After much thought, I've made a decision to schedule the round for 19:00 (Moscow time) - I think this option is convenient for most users of the site. It does not mean that we will not experiment with time in future - we will try morning contests, but I can't promise about 5:00:).

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Codeforces Beta Round #4
By MikeMirzayanov, 15 years ago, translation, In English
I propose to discuss here the issues and troubles associated with Codeforces Beta Round #4.  On our side, we identified three difficulties: 
  • Slow judging - apologize for the large queue, to the next round, I assume significantly increase the speed of judging;
  • Runtime errors on Python solutions - apparently the decision they want to load some library, which is prohibited by security reasons;
  • Sometimes incorrect runtime errors - apparently the result of the antivirus on testing servers, they will be turned off on the next rounds
Also express your impressions about the round.

P.S. And by the way, the round tutorial is waiting for a volunteer. It is desirable that it will be one of the leaders of today's competition. The tutorial should be in Russian and in English. It will be published on the homepage and later will be available via special link from the contest page.

UPD. The ratings have been updated.
UPD 2. Thanks to KudryashovIA for his help in making contest.

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Mistake in email notification
By MikeMirzayanov, 15 years ago, translation, In English
In email notification (in Russian) I've made a typo. The phrase "It starts on March 12 (Friday), 2010, 12:00" should be read as "It starts on March 12 (Friday), 2010, 15:00".

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Happy Women's Day!
By Nerevar, 15 years ago, translation, In English

Dear girls and women! Happy Women's day! On behalf of the Codeforces team I would like to wish you all the best!

May love and care surround you! May you always catch the admiring gazes of men! Stay beautiful and clever and keep making us happy!



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Codeforces Beta Round #3
By MikeMirzayanov, 15 years ago, translation, In English
I propose to discuss here all that concerns Codeforces Beta Round #3. Of course, during the competition it is forbidden to write anything about the solution of problems and similar things  

For the time of this contest, we turned off the chat server. This does not mean that it will not operate in future - I think it is a convenient and efficient way to communicate during the competition and you may expect it in the future.  

Also I'd like to announce Codeforces Beta Round #4, which will be held next week. It will be for participants from the second division (non-rated users or those having less than 1500 rating points). We will try not to delay Codeforces Beta Round #5, which will be opened for all. 

Wish you high rating,
MikeMirzayanov

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Announcement of Codeforces Beta Round 3
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Codeforces Beta Round #3 - Thousand apologies
By MikeMirzayanov, 15 years ago, translation, In English

It seems everyone is in the know that Codeforces Beta Round#3 didn’t take place in the appointed time. Seemingly, it happened because of the increased popularity of the site, on the one hand, and some of our bugs, on the other. For sure, it’s a pity that things went in such a way. On the other part, if everything had failed during the contest, it would have been worse. The contest is rescheduled for Sunday, 15:00 (Moscow time). Please be sure to check here for the start time in your time zone: http://www.timeanddate.com/worldclock/fixedtime.html?&day=07&month=03&year=2010&hour=07&min=00&sec=0&p1=179

I’d like to remind you that the project is in Beta yet, and we’ll work on the problem and try to fix it.

Thanks for your understanding,
MikeMirzayanov

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