SecondThread's blog

"Teams" going to the 2021 Facebook Hacker Cup Finals, with tourist factors
By SecondThread, history, 2 years ago, In English

Good Morning! I'm no Laggy, but I thought I would continue the tradition of making a "Teams" list for the 2021 Facebook Hacker Cup Finals, since I always found the ICPC World Finals lists fun. So here goes!

Facebook Hacker Cup 2021 Finalists

Rank Handle Country/Region Codeforces Rating Hacker Cup R3 Place tourist factor*
1 tourist Belarus 3870 1 50.00%
2 jqdai0815 China 3681 13 25.20%
3 Radewoosh Poland 3418 2 6.90%
4 Petr Switzerland 3408 4 6.54%
5 maroonrk Japan 3387 11 5.84%
6 ko_osaga South Korea 3334 8 4.37%
7 jiangly China 3334 3 4.37%
8 ecnerwala United States 3325 6 4.16%
9 Egor Germany 3211 23 2.20%
10 Um_nik Ukraine 3189 7 1.95%
11 mnbvmar ???? 3179 5 1.84%
12 duality Canada 3151 9 1.57%
13 Subconscious China 3107 22 1.22%
14 ainta South Korea 3102 16 1.19%
15 snuke Japan 3099 24 1.17%
16 molamola. South Korea 3076 15 1.02%
17 yosupo Japan 3071 12 1.00%
18 dotorya South Korea 3060 17 0.94%
19 heno239 Japan 3051 20 0.89%
20 Sugar_fan China 3018 18 0.74%
21 budalnik Russia 2840 10 0.27%
22 majk Czechia 2828 19 0.25%
23 TadijaSebez Serbia 2800 21 0.21%
24 Suika_predator China 2606 25 0.07%
25 s-quark China 2428 14 0.02%

*An individual's tourist factor is defined as the probability that this person would perform better than tourist in a Codeforces round, as predicted by the Elo Rating System.

**Contestants with question marks in their country have not told us which country you wish to represent, and this is my best guess based on your Codeforces profile.

Does CF Rating Predict Hacker Cup Performance?

Here's a graph of the finalists' rating vs. their Round 3 place:

So yes, it's a good predictor, but it certainly doesn't explain everything; it's not out of the question that any competitor could have an unusually good or bad contest, as you would expect.

Post-Contest Livestream (on Facebook)

Yep, be sure not to miss all the excitement in the post-contest livestream, during which Zef and I reveal the final scoreboard! Get excited--I'll see you Saturday!

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Comments Comments (22)
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2 years ago, # |
  Vote: I like it +38 Vote: I do not like it

Maybe there are reasons why some people excluded their country, and you shouldn't try to add these countries?

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    2 years ago, # ^ |
      Vote: I like it +44 Vote: I do not like it

    lol

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    2 years ago, # ^ |
      Vote: I like it +53 Vote: I do not like it

    Honestly I think the biggest reason people excluded their country is: "oops, I didn't check my email in the past 2 weeks lol"

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

      I'm pretty sure that I responded to the email and even got a reply.

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

The probability that tourist beats tourist is 50%?

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    2 years ago, # ^ |
      Vote: I like it +409 Vote: I do not like it

    Seems reasonable to me. If you had a clone of him, the original would win half the time.

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

      Are you sure they won't have a tie most of the times?

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2 years ago, # |
  Vote: I like it +36 Vote: I do not like it

Any updates on Hackercup t-shirts?

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

    Emails for shirts should have been sent out already. We've seen reports of it getting moved to spam, so please be sure to check that out if you haven't yet. If you're still not seeing it, please let me know and we'll check you out individually.

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2 years ago, # |
  Vote: I like it -25 Vote: I do not like it

Put a rightmost column on secondThread factor ...

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

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

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

How come that Um_nik represents Ukraine nowadays? Any reasons?

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    2 years ago, # ^ |
      Vote: I like it +221 Vote: I do not like it

    Because I live in Ukraine and don't want to represent Russia.

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2 years ago, # |
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Can someone tell me why jqdai0815 is not on the leaderboard?

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

    He hasn't done a contest in a long time, so he is no longer considered an active contestant. If you're watching for him on the stream, his handle will be "apiad".

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

So, what will be my tourist factor? Would it be 0.000000000001%?

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

    What about negative percentage?

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

    It's actually 0.0000049%. I'll make a tool this weekend that lets you check your tourist factor (or any-other-user-factor), since it seems like a fun thing to have.

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

      Could you share a link or something to the tool? I'm kind of curious about my tourist rating :D

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

I hope someone from India is here too next time cerberus97

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