Leonid's blog

0x10 Challenge 24
By Leonid, history, 8 years ago, In English

A reminder that online qualification for 0x10 Challenge 24 is approaching. So far only 10 teams are Ready for EC.

Registration Deadline: April 29th, 2016, Friday CEST 20:00

Electronic Contest: April 30th, 2016, Saturday CEST 10:00-14:00

Registration link — http://ch24.org/team/register.html

Qualification Standings — http://ch24.org/team/list.html

Country representation in TOP 30:

27 15 8 7 6 3

P.S. If you are considering to downvote — I have nothing to do with the problems!!

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8 years ago, # |
  Vote: I like it +5 Vote: I do not like it

While registration ends in about 3 hours, I'm looking for a violet+ team.

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8 years ago, # |
  Vote: I like it +267 Vote: I do not like it

GUYS YOU ARE THE WORST CONTEST AUTHORS EVER THANKS

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    8 years ago, # ^ |
      Vote: I like it +18 Vote: I do not like it

    +100500

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    8 years ago, # ^ |
      Vote: I like it +127 Vote: I do not like it

    Unfortunately, they won't understand this sentence.

    Try rearranging words randomly, removing some of them and adding completely unrelated ones.

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8 years ago, # |
  Vote: I like it +23 Vote: I do not like it

What's wrong with B (-1 gets 100 on all tests) testing and all these silent rejudges?

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    8 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    Admins said that most likely this problem will be removed

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8 years ago, # |
  Vote: I like it +66 Vote: I do not like it

Challenge 24! The contest where authors have to write problem statements in 24 seconds!

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8 years ago, # |
← Rev. 2   Vote: I like it +64 Vote: I do not like it

https://imgflip.com/i/13d4v1

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8 years ago, # |
  Vote: I like it +28 Vote: I do not like it

It was as bad as one year ago. I'm not able to imagine how you could think those problems are ok. Has anybody read the statements after someone has created them?

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    8 years ago, # ^ |
      Vote: I like it +109 Vote: I do not like it

    I don't agree that it was as bad as one year ago. Actually it was even worse :)

    Here is a story which describes this contest perfectly: we submitted an answer to a test for D, we got WA, we submitted new answer, it gets AC, then they change tests, now our AC answer is WA (and we lost points for it) and our old WA answer is marked as correct in list of obsolete submissions. Now if we are trying to submit it again in order to get points for that test (and to make it marked green in submission matrix), we are only receiving notification that we already solved this test so we can't submit it again :)

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      8 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      We had the same problem. Jury answered us that they would reevaluate after the contest all D submissions.

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8 years ago, # |
  Vote: I like it 0 Vote: I do not like it

Have they updated real scores for A, C, D?

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8 years ago, # |
← Rev. 3   Vote: I like it 0 Vote: I do not like it

This is very interesting contest, but I don't think this is programming. Pictures tasks are something like count by hand :)

Also, If someone can explane me text of B task, It would be really great :)

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8 years ago, # |
← Rev. 3   Vote: I like it +61 Vote: I do not like it

Summary of the contest:

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8 years ago, # |
← Rev. 2   Vote: I like it +28 Vote: I do not like it

Am I the only one who liked the image problems? We solved 19/20 tests in C + D by eyes =) (If tests were not wrong, we would have enough time to solve all)

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    8 years ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    B+C? Do you maybe mean C+D? Fine puzzles but why would they give them in a programming competition?

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    8 years ago, # ^ |
    ← Rev. 2   Vote: I like it 0 Vote: I do not like it

    While we actually coded a solution to a problem about underground (after spending a lot of time on getting proper interpretation of task itself :) ), problem about coins looks weird.

    I don't think a lot of teams did some coding in order to solve this problem, and it doesn't sound like a programming contest then. I enjoyed the trick with coins being mirrored etc., but generally it looked like "n coins gives wrong answer, maybe one of them is somehow bad, let's submit n-1", and this story describes a situation well :)

    To me it makes more sense to give such task with much higher constraints and approximate solution required) So either you have hard time counting all these coins by hand — a hundreds of them, not just a dozen, or you actually write some code or use some specific tool.

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      8 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      it makes more sense to give such task with much higher constraints and approximate solution required

      Last year there was an approximate problem with counting number of pop corn given sound. Everyone solved it with random guesses =)

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