DmitriyH's blog

By DmitriyH, 8 years ago, In English

Codeforces Round #270 round statistics :

First accepted:

A (00:01) 135678942570 AkshajK KADR Lord.of.AMC Te4NIK Wild_Hamster ainu7 andrewzta arknave athin flashmt jonathanirvings minimario speedermen ngochai94 Sert stevenkplus const_int_magic
B (00:03) tourist
C (00:06) snuke wo_
D (00:16) aitzhan.askar
E (01:31) Petr
F (00:50) PavelKunyavskiy
G (01:08) riadwaw

Total hack attempts: +81:-214

Top-11 hackers:

400 zetamoo +4:-0
400 xiaohao1238 +4:-0
300 Lelby +3:-0
300 dirbaio +3:-0
200 ichyo +2:-0
200 Schullz +2:-0
200 swap +2:-0
200 Nikitosh +2:-0
200 sublinekelzrip +2:-0
200 espr1t +2:-0
200 VArtem +2:-0

Other info


Complete Results 1-1600
Complete Results 1601-3200
Complete Results 3201-N






FAQ

 
 
 
 
  • Vote: I like it
  • +43
  • Vote: I do not like it

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8 years ago, # |
  Vote: I like it +79 Vote: I do not like it

601 place with 1333 gets +375, but worse with -89 and 469 place gets only +319... Hm..

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    8 years ago, # ^ |
      Vote: I like it +45 Vote: I do not like it

    Codeforces rating system don't like me. It hurt to realize it :(

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8 years ago, # |
Rev. 2   Vote: I like it +28 Vote: I do not like it

worse had 469th place (higher than some top breakthroughs), he definitely had lower rating than them, but he got less rating points. It seems quite a strange.

DmitriyH, didn't you have an idea to find pairs of participants A, B that startRatingA < startRatingB, placeA < placeB and deltaA < deltaB?. Is it common situation?

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    8 years ago, # ^ |
      Vote: I like it +6 Vote: I do not like it

    One possible explanation could be that worse's rating is more or less determined to be at that range (let's say 0 +/- 350) while for the other people the margin of error in their determined ratings could be higher (let's say 1333 +/- 450).

    It would be interesting to also include matchesA < matchesB (possibly implying a larger margin of error in determining their ratings).

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      8 years ago, # ^ |
        Vote: I like it +1 Vote: I do not like it

      Yeah, it could be right, but page about rating doesn't mention anything like that (any input except old ratings and places) :(

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        8 years ago, # ^ |
          Vote: I like it +1 Vote: I do not like it

        Yes, on CF the rating is primarily based on Elo, which does not take that into account unlike on sites like Topcoder, where we can see volatility.

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8 years ago, # |
  Vote: I like it +1 Vote: I do not like it

Isn't this a higher breakthrough?

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8 years ago, # |
  Vote: I like it -11 Vote: I do not like it

you and illi are so annoying! and you're first by contribution only because of your useless stats

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

Different results in best hackers between you and illi why is that?

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8 years ago, # |
  Vote: I like it -8 Vote: I do not like it

useless