Croc Champ 2013 — Finals
By MikeMirzayanov, 12 years ago, translation, In English

Today it will be Croc Champ 2013 Finals! Good luck to all participants. And to those who don't participate — enjoy the interesting competition.

Yesterday have finished the trial contest and Code Game Challenge. The winner of Code Game Challenge is ... tourist!

Also pay attention to the Croc Champ 2013 - Finals (online version, Div. 1). It will be a rated round. Note: it will be slightly unsual because we will not hide the standings of the official contest. So some information about difficulties of the problems will be known before the round. The contest duration is 2.5 hours.

Good luck to everyone!

The contest has been finished. The winners are:

Final standings

Announcement of Croc Champ 2013 - Finals
  • Vote: I like it
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  • Vote: I do not like it

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

thanks a lot for this round!!! I've been really waiting for a Div.1 competition!!!

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12 years ago, # |
  Vote: I like it +3 Vote: I do not like it

Can div 2 participants take part out of the competition?

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12 years ago, # |
  Vote: I like it +4 Vote: I do not like it

Doesnt div 2 participants take part in online version contest?

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12 years ago, # |
← Rev. 2   Vote: I like it +9 Vote: I do not like it

seems problem C very tricky

Already 14 hacks for C.

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12 years ago, # |
  Vote: I like it +6 Vote: I do not like it

Knowing the problems' difficulties and having a strategy to solve them before the round is a fun experience! :D

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

there will be some live transmission of the award ceremony?

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12 years ago, # |
  Vote: I like it +3 Vote: I do not like it

If someone registers, enters, reads problems, tries to solve them, but finally submits nothing, will they be rated?

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    12 years ago, # ^ |
      Vote: I like it +11 Vote: I do not like it

    I think they won't be rated, like the other contests.

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

    If someone try to solve problem (submit solution to server) — round be rated for him.

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    12 years ago, # ^ |
      Vote: I like it +12 Vote: I do not like it

    No. You should take some action (submission, even the one failed on pretests) to make the round rated for you. Probably, it is not true for onsite events.

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      12 years ago, # ^ |
      ← Rev. 2   Vote: I like it +45 Vote: I do not like it

      So TopCoder seems to be more fair in that. There, if you score something above 0 you are considered a winner over those who were not able to submit anything. Here if you solve 1 easiest problem with great difficulty (using much time), your ranking is very likely to fall.

      Not very significant for usual rounds, but for this one, with increased difficulty, it plays some role.

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        12 years ago, # ^ |
          Vote: I like it -31 Vote: I do not like it

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        12 years ago, # ^ |
          Vote: I like it -16 Vote: I do not like it

        Strongly agree with you! Imho, the appropriate steps of solving the problem "no submit => no rating change" are: 1) during contest, problems are visible only for registered participants for the contest 2) registration for the contest => definite rating change after the contest 3) adding easy bait-problem to any contest (div1) to provoke a submit P.S.: Mike, it would be interesting to know access-log info about registered participants, who did not submitted anything

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

          I don't think that 2) (about definite rating change for all registered participants) is a good idea. One's plans may change after registration under some third-party circumstances, and participant shouldn't be punished for this, I think.

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

            Seems to be doable to rate only those of registered participants, who finally entered the tournament. I think server can detect that a registered user pressed "Enter". That would imply rating the user. Otherwise — unrated. Of course problem statements cannot be visible without entering the tournament.

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

              Doesn't make much sense for me because it's possible to read the problems without authorization.

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

            Do not register, if not sure. Registration is possible till 5 minutes before contest.

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12 years ago, # |
  Vote: I like it +4 Vote: I do not like it

How I see point distribution: 1500, 1500, 1000, 3000, 3000

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12 years ago, # |
  Vote: I like it +11 Vote: I do not like it

So much easier than the second round :)

Btw, I love a142857a, who hacked my C solution :))

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

Last minute accept! Really lucky for me. Problem C are so nice and extremely tricky!

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

Only make 3 successful hacking and 2 unsuccessful hacking (all my solutions failed) and my rating increased :)

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

Can somebody help me with this submission? I had TLE durring the contest and tried to find out from where. Only reading the first N numbers in problem C takes 1450 ms (from the 2000 allowed), I don't remember C++ streams being so slow.

3731114

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

    Maybe this does the trick: cin.sync_with_stdio(false); At the beginning.

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

      I was trying this as you were writing the comment. My times went down to 468 ms (on max test). Still, this is the first time I got a TLE while using cin (withot disabling sync with stdio).

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        12 years ago, # ^ |
          Vote: I like it -12 Vote: I do not like it

        both my A and C got TLE just because of I forgot this line. Thanks guys for the "nice" tests and limits :|

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12 years ago, # |
← Rev. 2   Vote: I like it +37 Vote: I do not like it

It's seems that tests for problem C are still weak (with this large amount of hacks!) my first code in contest had a bug and I did resubmit and I've got hacked. but now I tried again and my first code got accepted!

(my accepted solution: 3731160)

(submitted code during contest: 3730476)

this code will produce wrong answer in this test:

2 3
4 6
0 2 2
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12 years ago, # |
  Vote: I like it -10 Vote: I do not like it

This was the first event, in which I had to ask clarification questions. I wonder if I have problems with reading or understanding, or the statements themselves were not clear enough. How did you know that:

  1. A. Two runners cannot start from the same position.
  2. B. Space counts as a character.
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    12 years ago, # ^ |
    ← Rev. 2   Vote: I like it +16 Vote: I do not like it
    1. You can deduce this from 0 ≤ a1 < a2 < ... < an < l
    2. I could not think that why space should not be counted as a character.
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12 years ago, # |
  Vote: I like it +8 Vote: I do not like it

Screencast

Unfotanately I forgot to stop recording right after contest ends, so you can stop watching video after that, there are nothing interesting after that

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11 years ago, # |
  Vote: I like it +7 Vote: I do not like it

Will there be an editorial for this contest?

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