rng_58's blog

By rng_58, history, 4 months ago, In English

Let's hold an ARC Lockout Tournament. The idea is inspired by ecnerwala's Lockout tournaments and kenkoooo's ABC tournaments. This is not an official tournament, so there will be no prize; the winner gets the honor as the champion of the lockout tournament.

The rule is basically the same as ecnerwala's.

  • I use the actual points in the contest (like 300-400-500-600-700-800) to judge the winner.
  • Only the user with the earlier AC time gets the assigned score (tie-break by submission ID)
  • The time penalty doesn't matter.
  • In case of tie, the winner is the first one who reached that score (again the tie penalty doesn't matter).
  • In case both participants skip the round, the winner is the one with the higher rating at that time.

I don't want to mess up the results of rated participants with this format, so you need to be a red or above on AtCoder. If you want to participate, please reply this thread with your AtCoder handle by November 21st, 0:00, JST (that is 21 hours before the start of ARC 108). After that, the tournament bracket will be made in the 18452736 manner by ratings.

The first round is ARC 108, the second round is ARC 109, and so on.

UPD: I don't want to decrease writers because of this; if a match involves a writer or a tester, the result of the match is determined by the next ARC.

UPD: Thank you for the registration! Now the registration closed. Bracket You can add predictions now!

So, tomorrow is the match between Anadi and Golovanov399.

 
 
 
 
  • Vote: I like it
  • +254
  • Vote: I do not like it

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4 months ago, # |
  Vote: I like it +140 Vote: I do not like it

Um_nik (not red on AtCoder but I think it's fine)

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4 months ago, # |
  Vote: I like it +28 Vote: I do not like it

Not red but I'd love to use this as motivation to wake up early and maybe get red :(

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    4 months ago, # ^ |
      Vote: I like it +10 Vote: I do not like it

    If you are an orange, of course, you are welcomed to participate in ARCs in a standard way!

    Once you reach red, ARCs will be unrated for you and the problems maybe be a bit too standard for you, and you have less motivation to participate in them. Lockout looks like a very nice way to solve this issue. You can still play a very strategic sport.

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4 months ago, # |
  Vote: I like it +8 Vote: I do not like it

Please stream!

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    4 months ago, # ^ |
    Rev. 2   Vote: I like it +4 Vote: I do not like it

    The point is that it would be during real ARC, right?

    Actually, this format combats cheating very well, so maybe AtCoder could sponsor some prizes?

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      4 months ago, # ^ |
        Vote: I like it +13 Vote: I do not like it

      Oh, indeed it apparently will be parallel to the ARC. Then I (not really seriously) suggest streaming with tremendous delay :)

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        4 months ago, # ^ |
          Vote: I like it -63 Vote: I do not like it

        For finals and semifinals, I suggest making ARCs unrated and streaming live.

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4 months ago, # |
  Vote: I like it +16 Vote: I do not like it

mulgokizary

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4 months ago, # |
  Vote: I like it +8 Vote: I do not like it

Alex_2oo8

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4 months ago, # |
Rev. 3   Vote: I like it +42 Vote: I do not like it

Yo, long time ago I made a handy script so people can see which problems are locked in real-time, which might be useful for this kind of competition, but I need to submit a request to AtCoder every x second to be able to update it and I believe I shouldn't DDOS your platform during normal contests. Can you provide any kind of API?

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    4 months ago, # ^ |
      Vote: I like it +226 Vote: I do not like it

    My proudest moment in CP. It all goes downhill from there :)

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4 months ago, # |
  Vote: I like it +10 Vote: I do not like it

Egor (just red again)

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    4 months ago, # ^ |
      Vote: I like it -43 Vote: I do not like it

    You look a lot like Eugene from Walking dead. That guy's character was also smart

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4 months ago, # |
  Vote: I like it +38 Vote: I do not like it

pashka

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4 months ago, # |
  Vote: I like it +17 Vote: I do not like it

Let's try, Swistakk

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4 months ago, # |
  Vote: I like it +32 Vote: I do not like it

What happens if some contestant drops to below red after the start of the tournament?

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4 months ago, # |
  Vote: I like it +78 Vote: I do not like it

karangreat (not red on AtCoder but I think it's fine)

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4 months ago, # |
  Vote: I like it +19 Vote: I do not like it

RomaWhite

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4 months ago, # |
  Vote: I like it +11 Vote: I do not like it

DmitryGrigorev

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4 months ago, # |
  Vote: I like it +8 Vote: I do not like it

Merkurev

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4 months ago, # |
  Vote: I like it +11 Vote: I do not like it

Maksim1744

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4 months ago, # |
  Vote: I like it +45 Vote: I do not like it

ainta

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4 months ago, # |
  Vote: I like it +21 Vote: I do not like it

Anadi

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4 months ago, # |
  Vote: I like it +76 Vote: I do not like it

I want to participate. Grand Contest 049 is my last hope to become red. Wish me luck!

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3 months ago, # |
  Vote: I like it +20 Vote: I do not like it

snuke

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3 months ago, # |
  Vote: I like it +20 Vote: I do not like it

endagorion

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3 months ago, # |
  Vote: I like it +30 Vote: I do not like it

Golovanov399

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3 months ago, # |
  Vote: I like it -51 Vote: I do not like it

cospleermusora

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3 months ago, # |
  Vote: I like it +64 Vote: I do not like it

Petr

I would love to participate, but I also don't want to solve another contest this Saturday a few hours before the TopCoder Open finals. In case I don't get a bye for the first round, would it be possible to designate me (and other TCO finalists if they so desire) as a "writer or tester" for the purposes of lockout tournament?

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    3 months ago, # ^ |
      Vote: I like it +22 Vote: I do not like it

    Yes, I will handle you as a "writer or tester". Good luck in Finals!

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

Xellos

Fuck it I'm in.

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3 months ago, # |
  Vote: I like it +20 Vote: I do not like it

Will there be instructions for how to do this?

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    3 months ago, # ^ |
      Vote: I like it +16 Vote: I do not like it

    Submit solutions as usual, and you can get the opponent's status in https://atcoder.jp/contests/arc108/vs?p1=Anadi&p2=Golovanov399.

    It is allowed to look at opponent's submission list.

    Please ask me if you need further clarifications.

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      3 months ago, # ^ |
        Vote: I like it +11 Vote: I do not like it

      In AtCoder, it's impossible to see other user's submission list during a contest.
      All information you can see during a contest are standings and your submissions. (lockout page is based on standings data)

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        3 months ago, # ^ |
          Vote: I like it 0 Vote: I do not like it

        I'm not sure about seeing list of other user's submissions, never wanted to until now, but for sure we can see (-1) in standings which is almost as good. If you say that we are allowed to look at the standings does it mean that we are allowed to look at this (-1)?
        Are we allowed to cooperate with opponent and write each other if we have got AC? It would be better to make notifications from ongoing match, but I don't know if it can be implemented.

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          3 months ago, # ^ |
          Rev. 2   Vote: I like it 0 Vote: I do not like it

          Yes I meant (-1). You are allowed to do whatever usual contestants are allowed to do.

          Are we allowed to cooperate with opponent and write each other if we have got AC?

          For lockout participants this is allowed too.

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      3 months ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      Are we allowed to use template and copy code from library?

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3 months ago, # |
  Vote: I like it +9 Vote: I do not like it

dario2994

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3 months ago, # |
  Vote: I like it +86 Vote: I do not like it

lockout page was born in AtCoder.

you can watch the first match here. https://atcoder.jp/contests/arc108/vs?p1=Anadi&p2=Golovanov399

there are reload button and auto reload button. auto reload interval:

  • competitor: 10 seconds
  • spectator: 1 minute

problems will appear after the contest starts. sample

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3 months ago, # |
  Vote: I like it +19 Vote: I do not like it

There were some tensions about it in recent Lockout tournament so I'll ask: are we allowed to look at opponent's submission list?

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    3 months ago, # ^ |
      Vote: I like it +7 Vote: I do not like it

    Lemme answer how it'll actually work with a famous movie quote:

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3 months ago, # |
  Vote: I like it +11 Vote: I do not like it

2nd round tomorrow?

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3 months ago, # |
  Vote: I like it +11 Vote: I do not like it

Is it one match per ARC or is it gonna be many lockout matches in parallel? In particular, should I participate tomorrow?

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3 months ago, # |
  Vote: I like it +117 Vote: I do not like it

Okay

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    3 months ago, # ^ |
      Vote: I like it +16 Vote: I do not like it

    Okay

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    3 months ago, # ^ |
      Vote: I like it +21 Vote: I do not like it

    Orz

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    3 months ago, # ^ |
      Vote: I like it +21 Vote: I do not like it

    No really, if this is what an ordinary ARC is like, I guess they are certainly not below my level, and I should actually do them instead of AGCs. Like was problem F really for 0-2799 guys, if my opponent (who is, I'd say, far from being stupid) didn't solve it in 50 mins?

    That being said, thank you guys for a nice and hard contest! I was suffering, but I kinda liked it

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      3 months ago, # ^ |
        Vote: I like it +23 Vote: I do not like it

      This time we misjudged the difficulty level of the problems and the contest was harder than usual. I'm sorry if the underestimated scores ruined someone's strategy.

      Anyway, thanks for your participation, and we're looking forward to seeing you at the next match.

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      3 months ago, # ^ |
        Vote: I like it +10 Vote: I do not like it

      I don't do all the ARC but I think half of the time F is solved by ~5 participants (to be fair, usually the number of high rated participants are low in ARC), so, F being very hard is pretty much normal thing for ARC. This time I wasn't able to solve D in 20 minutes which is less usual :)

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        3 months ago, # ^ |
          Vote: I like it 0 Vote: I do not like it

        20? I spent an hour on it and still have no idea how to solve it.

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          3 months ago, # ^ |
            Vote: I like it 0 Vote: I do not like it

          Yeah, I decided to switch to E but then Golovanov399 sniped it from me :) I don't know how to solve it either.

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            3 months ago, # ^ |
              Vote: I like it +55 Vote: I do not like it

            Neither do I, I've reverse-berlekamped the samples

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3 months ago, # |
  Vote: I like it +28 Vote: I do not like it

Thanks for the round, I've enjoyed it a lot (even though I can't really solve problems...)

ARC 110 ends 30 minutes before the start of Hacker Cup finals. Would it be possible to move it to Sunday (which has CF Global Round 12, but at least for me it's not as important as Hacker Cup finals) and/or postpone the Facebook finalists' matches until ARC 111?

I'm sorry for the second request of the same kind from me.

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3 months ago, # |
  Vote: I like it +18 Vote: I do not like it

Hi, is it true that there will be an ABC tomorrow and therefore the next lockout round is no earlier than in a week?

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7 weeks ago, # |
  Vote: I like it +44 Vote: I do not like it

Reminder: Tomorrow we have an ARC and the matches will be

By the way, we have a sponsored contest with ARC quality and difficulty next week, but it doesn't have ARC in the name. Should we hold an "ARC" lockout next week? If you have a particular opinion about this, please tell me. (Now I'm planning to hold a match next week.)

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6 weeks ago, # |
  Vote: I like it +16 Vote: I do not like it

rng_58 please update the result of the last match.

Reminder: today we have a match Petr VS gamegame.

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2 weeks ago, # |
  Vote: I like it +29 Vote: I do not like it

Reminder; tomorrow we have the Final Round: Golovanov399 vs Petr, and the Bronze Match: Merkurev vs gamegame.