Laggy's blog

By Laggy, 7 days ago, In English,

A series of unfortunate events has been going on for a few days since I moved to Innopolis, Russia. First, a nuclear explosion upon my arrival. Then the a small fire in the dorm I am staying at which lead to alarms firing and me running around in my pajamas while carrying only my laptop (Yes, I had to save one thing). And then I login to codeforces to find my contribution has decreased. Well now that's bad.

So as continuation for last year's blog here is some data from the handles we have of IOI participants.

Total Score Distribution

Day1 Distribution

Day2 Distribution

Bonus

Try to find tmwilliamlin168 in those pictures since Benq is obvious.

 
 
 
 
  • Vote: I like it
  • +149
  • Vote: I do not like it

»
7 days ago, # |
  Vote: I like it +8 Vote: I do not like it

Why there are no participants in the graph between 100 and 200 in day 2?

  • »
    »
    7 days ago, # ^ |
      Vote: I like it +1 Vote: I do not like it

    Ye give me a minute.

    • »
      »
      »
      7 days ago, # ^ |
        Vote: I like it +8 Vote: I do not like it

      Yup, now it's fixed. How many users are in the graph? Could you also colour the background in the total score image according to medals?

»
6 days ago, # |
  Vote: I like it +9 Vote: I do not like it
»
6 days ago, # |
  Vote: I like it +94 Vote: I do not like it

I can easily find myself lol.

  • »
    »
    6 days ago, # ^ |
      Vote: I like it +13 Vote: I do not like it

    That's because your rating is 3000+and the were only two participaters in IOI2019 whose ratings are above 3000. orzzzz~

  • »
    »
    5 days ago, # ^ |
    Rev. 2   Vote: I like it +11 Vote: I do not like it

    You also have relatively the same position in all 3 graph. Kinda interesting

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

It would be amazing to have a graph like this comparing users' previous rating in Codeforces with their actual score/rank in some recent contests (in Codeforces), thus, we could use it as a "blank experiment" and compare the correlations.

If the correlations are similar, it would mean that Codeforces ratings are as good predictor of performance in IOI as in Codeforces, and if the correlation is much better for Codeforces competitions, it would mean that we can't really trust a lot in Codeforces ratings for IOI competitions (which is what I conjecture).