Google Code Jam Difficulty Estimation — 2021 Qualification Round

Правка en1, от areo, 2021-04-02 14:40:01

Have you been wondering what is the difficulty of Code Jam problems on a codeforces scale? me too.

I tried to make an estimate for the 2021 qualification round (link), and I plan to do it also for the upcoming rounds. I share here the process, the results, and I welcome any feedback to improve.

Data: - CJ contest result data, downloaded using vstrimaitis code, see details in his great blog post. From here I get the list of contest participants and what problems they solved. - CF users data, downloaded using CF API. From this, I get the current rating of every CF coder.

I assume that many coders use the same username across different platforms. If for a given CJ contestant I find a CF user with the same name (case insensitive), I assume they are the same person.

Теги codejam, gcj, difficulty, 2021

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  Rev. Язык Кто Когда Δ Комментарий
en7 Английский areo 2021-04-11 15:05:47 549
en6 Английский areo 2021-04-02 21:02:01 0 (published)
en5 Английский areo 2021-04-02 21:01:17 1108 Tiny change: 'td,dr: A 900, \' -> '**td,dr**: A 900, \'
en4 Английский areo 2021-04-02 20:37:22 2249 Tiny change: '\frac{1}{1}$\n\n\nWh' -> '\frac{1}{1+10^\frac{R-D}{400}}$\n\n\nWh'
en3 Английский areo 2021-04-02 15:23:43 1828
en2 Английский areo 2021-04-02 14:40:39 2
en1 Английский areo 2021-04-02 14:40:01 1046 Initial revision (saved to drafts)