Problem Difficulty Algorithm Seems Broken

Правка en6, от kfqg, 2019-02-08 00:22:25

For CodeForces round #537 (Div. 2) the problem difficulty algorithm seems incorrect.

Problem B — 694 / 4752 correct submissions during contest, rated 1600

Problem C — 1272 / 2172 correct submissions during contest, rated 1700

Can anyone explain how this could happen? I don't see how any algorithm could rank the C as harder.

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  Rev. Язык Кто Когда Δ Комментарий
en6 Английский kfqg 2019-02-08 00:22:25 63
en5 Английский kfqg 2019-02-08 00:20:54 0 (published)
en4 Английский kfqg 2019-02-07 23:57:54 9 Tiny change: 'round #537](http://c' -> 'round #537 (Div. 2)](http://c'
en3 Английский kfqg 2019-02-07 23:57:19 94
en2 Английский kfqg 2019-02-07 23:56:38 16 (saved to drafts)
en1 Английский kfqg 2019-02-07 23:41:26 474 Initial revision (published)