SK1PY's blog

By SK1PY, history, 4 months ago, In English

We would like to invite you to CEOI 2024 online mirror, which will take place between Sunday, June 30 at 20:00 UTC and Monday, July 15 at 6:00 UTC. Please do not discuss the tasks until the end of the mirror in order not to spoil the tasks for others.

To participate in the contest, go to the contest system, register and then log in. You can solve any tasks in any order you like during the entire contest period.

The problems were prepared by Svizel_pritula, Dakto, David Kolář, MapleTree314, Yongaron, JiriKalvoda, osladky, rakdver, timreizin, -Wave- and me.

Lot of thanks goes to:

  • JiriKalvoda for heavy lifting as the Head of SC.
  • HaroldVemeno, Dakto and merlin_wizard for testing the competition.
  • Martin Mareš and Jan Hadrava for herding the computers and running the contest system.
  • Tom Pitner and local organizers for running the event
  • And finally, all contestants and team leaders for the great atmosphere!

Update: You can find editorials and other task materials here.

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4 months ago, # |
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Thanks for your efforts!

Just wondering, can there be an option for a virtual contest ?

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4 months ago, # |
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Thanks for the mirror. I am also wondering could it be set to normal contests (as if 4-5h for 3-4 problems), otherwise this is simply the same as upsolving.

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4 months ago, # |
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Nice contest

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4 months ago, # |
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Will participate

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4 months ago, # |
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oolimry and I wrote an unofficial editorial since after asking organizers, it seems that editorial is not public?

Organizers said that it is ok to make the editorial public, so here it is https://errorgorn.github.io/2024/07/03/CEOI.html

Please don't directly copy codes here into the online mirror, thanks

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    4 months ago, # ^ |
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    I was actually wondering if there will be any editorial, Thank you!

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    4 months ago, # ^ |
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    oolimry and I wrote an unofficial editorial since after asking organizers, it seems that editorial is not public?

    Still working on it, sorry. Hopefully will have it published by the end of the week.

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    4 months ago, # ^ |
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    Re: covid, my approach was similar to the unofficial editorial but I think it's a bit cleaner.

    Spoiler
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      4 months ago, # ^ |
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      How can one calculate the expected number of queries for such a solution?

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        4 months ago, # ^ |
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        Intuition: Why as close to one half as possible?
        Exact Expected Number of Queries For My Solution (Small N)
        Approximate Number of Queries For My Solution (Large N)
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    4 months ago, # ^ |
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    Spoiler
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      4 months ago, # ^ |
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      Please do not discuss the tasks until the end of the mirror in order not to spoil the tasks for others.

      I think you should hide the above under a spoiler

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      4 months ago, # ^ |
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      Spoiler
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4 months ago, # |
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Auto comment: topic has been updated by SK1PY (previous revision, new revision, compare).

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4 months ago, # |
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Now that the mirror is over, is there any place we could upsolve the problems?