MinakoKojima's blog

ACM/ICPC China Final 2016
By MinakoKojima, history, 7 years ago, In English

Live

  • 14:00 : The contest is end!
  • 13:00 : The scoreboard is close.
  • 12:58 : While jqdai0815 and YuukaKazami debugging on the Math problem, jcvb start the Geometry.
  • 12:55 : It seems that THU Deep Dark Fantasy is working on the Math problem. They are very close with the right solution, but currently failed on the sample. SJTU Absolute Weapon* is working on problem J, and everything looks right but failed on the sample too.
  • 11:41 : THU Deep Dark Fantasy solve problem J.
  • 11:07 : jqdai0815 is working on implement a network flow, seems that they are on problem J. [pic.]
  • 11:01 : Joke, some team use a function named "fxxk" during the livetream. [pic.]
  • 10:50 : THU Deep Dark Fantasy solve G and F, they are still 2 problems ahead.
  • 10:36 : UESTC Life Lemon solve problem E with 1Y.
  • 10:34 : SJTU Absolute Weapon* solve problem B.
  • 10:23 : THU Deep Dark Fantasy solve problem C at their second submit, they are 2 problems ahead.
  • 10:17 : XJTU Peach solve problem F, only 3 problems remain unsolved at this moment, a.k.a, a Geometry, a Flow and a Math while the top team only solve 5 of them.
  • 10:16 : THU Deep Dark Fantasy get their first WA during the contest on problem C.
  • 10:07 : HDU First Team solve problem G.
  • 10:00 : SJTU Lunatic solve problem B, and here comes the 1 hour scoreboard.
  • 09:48 : THU Come to Dad solve problem C.
  • 09:45 : THU Deep Dark Fantasy solve problem E with 1Y, they are leading the board.
  • 09:41 : China-Final-2016.pdf.
  • 09:21 : SJTU Absolute Weapon* solve problem H, they use a better solution than us.
  • 09:19 : SJTU Lunatic start to submit problem E, unfortunately, they get a WA.
  • 09:18 : The pdf of the problem-set will be release about 1 hour later.
  • 09:12 : SJTU Lunatic solve problem D.
  • 09:09 : BNU Salty Fish solve problem L.
  • 09:02 : THU Deep Dark Fantasy solve problem A.
  • Dec 11th 09:00 GTM+8: The contest is start!
  • Dec 10th 15:45 GTM+8: The warm-up is start!

Hello, Codeforces.

ACM/ICPC China Final 2016 is going to start on this weekends.

Over 300 teams will go to Shanghai University to participate in this contest to complete for the slot of qualifying to the World Final next year. There is no doubt that this will be the most important contest in China this year.

Team name Team member 1 Team member 2 Team member 3
THU Deep Dark Fantasy YuukaKazami jqdai0815 jcvb
SJTU Dread;Weapon ftiasch BaconLi rowdark
SJTU New Meta data_h xyz2606 Akigeor
FDU Wood Cube t90tank SakurakoujiRuna tun

Good luck!

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7 years ago, # |
  Vote: I like it +32 Vote: I do not like it

Will there be a public contest or link with the scoreboard that we can follow?

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    7 years ago, # ^ |
      Vote: I like it +10 Vote: I do not like it

    There will be a scoreboard tomorrow, and as far as I know, there is no public contest at the moment,

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      7 years ago, # ^ |
        Vote: I like it +42 Vote: I do not like it

      Can I ask you about any chance for contest data, or virtual contest at gym?

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7 years ago, # |
  Vote: I like it +20 Vote: I do not like it

which teams are the favourite ?? :) :)

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    7 years ago, # ^ |
    ← Rev. 2   Vote: I like it +22 Vote: I do not like it

    Of course, Deep Dark Fantasy, they won in a local contest recently. If there is a gambling, I certainly will bet all on them. ;) I am going to update some information about the teams later.

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      7 years ago, # ^ |
        Vote: I like it +34 Vote: I do not like it

      Who is the third member in Deep Dark Fantasy team?

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        7 years ago, # ^ |
          Vote: I like it +146 Vote: I do not like it

        As far as I know YuukaKazami. You know you are fu$#%ed if the strongest member is the only one that hasn't won IOI.

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        7 years ago, # ^ |
          Vote: I like it +24 Vote: I do not like it

        Now I joined it... Somehow I didn't log in CF for a long time and did not accept the invitation...

        It seems I have been away from algorithmic contest for 1 year and am the weakest member right now...

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

          Did you win? It seems you had a great contest at least up to the 4th hour :)

          Looking forward to see the final scoreboard

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            7 years ago, # ^ |
            ← Rev. 3   Vote: I like it +25 Vote: I do not like it

            It seems we win with 11 problems...

            jqdai0815 carried us... I only passed one problem.

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              7 years ago, # ^ |
                Vote: I like it +17 Vote: I do not like it

              Congratulations!

              It's a bit crazy to hear that someone with your level is the weakest member right now. You are a ridiculously strong team.

              Good luck in the world finals!

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                7 years ago, # ^ |
                  Vote: I like it +65 Vote: I do not like it

                Thanks!

                After finishing my PH.D. application, I shall be back to practice for my final World Finals...Hopefully I can do much better than 3 years ago...

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              7 years ago, # ^ |
                Vote: I like it +14 Vote: I do not like it

              Your humbleness is inspiring :)

              comment from last year

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

      清华大学 深黑幻想 means Deep Dark Fantasy , right ?

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        7 years ago, # ^ |
          Vote: I like it +13 Vote: I do not like it

        深黑幻想 means Deep Dark Fantasy. 清华大学 means THU.

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7 years ago, # |
← Rev. 2   Vote: I like it +51 Vote: I do not like it

.

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    7 years ago, # ^ |
      Vote: I like it +51 Vote: I do not like it

    Not sure.

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

      How does qualification work? I've seen that Deep Dark Fantasy already won a regional contest. Was that just to get access to this final?

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        7 years ago, # ^ |
          Vote: I like it +43 Vote: I do not like it

        I don't know, no one know the actually rules this year except Dr. Hwang himself at this very moment, but I still think they must already get the ticket.

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

Uhm ... shouldn't it be "Chinese" ? I don't think "Chinal" is a correct word.

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7 years ago, # |
  Vote: I like it +15 Vote: I do not like it

Update

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7 years ago, # |
← Rev. 2   Vote: I like it +3 Vote: I do not like it

Auto comment: topic has been updated by MinakoKojima (previous revision, new revision, compare).

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

It would be nice if you can post some pictures of the live contest here...

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

Why the scoreboard shows teams without rank?

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

Wish the livestream would just show the screen of Deep Dark Fantasy, instead of just showing view of the room half the time, what a waste.

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7 years ago, # |
  Vote: I like it +20 Vote: I do not like it

Auto comment: topic has been updated by MinakoKojima (previous revision, new revision, compare).

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

Great stuff. Thanks a lot for the live updates!

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7 years ago, # |
  Vote: I like it +13 Vote: I do not like it

Is there any sketch of the solutions to the problemas?

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

Nice H! In your blog, you said '09:21 : SJTU Absolute Weapon* solve problem H, they use a better solution than us.' Can you share with us how you and SJTU Absolute Weapon* solve H?

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7 years ago, # |
← Rev. 2   Vote: I like it +18 Vote: I do not like it

Was the judge server fast? In particular I'm wondering if the following are supposed to pass:

  • O(N2 logN) solution with set for C
  • O(Nlog2 N) solution with set for G
  • O(NlogN) suffix array for F

Also, was it necessary to use BigIntegers in E?

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    7 years ago, # ^ |
      Vote: I like it +32 Vote: I do not like it

    All of the solutions you described can pass in the contest. It's necessary to use BigIntegers. And Python is supported in the contest.

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    7 years ago, # ^ |
      Vote: I like it +57 Vote: I do not like it

    I am currently working on put this contest into the gym.

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

How can we solve problem C ? Thanks

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