Radin_Zahedi's blog

Cf Predictor alternatives
By Radin_Zahedi, history, 3 years ago, In English

As you know, when the contest is disrupted (I don't know the exact jurgen for it, thus I'm using disruption) Cf Predictor fails to predict the rating, and instead shows a ? in the rightmost column, as shown in the picture below:

What are the alternatives, which can predict the rating during the contest, and are not affected by the disruptions?

  • Vote: I like it
  • +28
  • Vote: I do not like it

Comments Comments (12)
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3 years ago, # |
  Vote: I like it +160 Vote: I do not like it

Disruption is caused by turning off Codeforces API I guess, which is done in order to reduce load on servers in contests, therefore, no predictor will work. Unless upgrade it in order to remember last delta change before turning down API, but that's kinda useless.

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3 years ago, # |
  Vote: I like it +25 Vote: I do not like it

Carrot extention seems to work quite faster than CF-Predictor in my experience. Link to Carrot extension on chrome web store

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    3 years ago, # ^ |
      Vote: I like it +41 Vote: I do not like it

    Carrot actually doesn't solve this problem. Both CF-Predictor and Carrot requires Codeforces API in order to load standing list quickly, but all the Codeforces APIs are closed down due to the unique contest mode ("based on some competition", I think, as the problem appeared at VK Round, Technocup, etc.). Also, the profile page are closed during contest, and redirect operations are added. I think it's a protection by Codeforces to get rid of web crawlers. By the way, as the redirect operations are opened, CF Tool can neither fetch problem information nor submit code.

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3 years ago, # |
  Vote: I like it -50 Vote: I do not like it

Use carrot extension, it is quite good

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    3 years ago, # ^ |
      Vote: I like it +16 Vote: I do not like it

    Hey blue cheater!

    You said that you will solve a lot of problems in yesterday's contest! But you didn't even participate!!!

    Why??

    You didn't get solutions??

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

      Can u plz elaborate how r u imposing him as a cheater (I m not supporting him) just asking do u have any proof that proves him cheater?

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

        if you look at his latest submissions during contests,

        1

        2

        he added meaningless comments to the code that he copied from others to avoid being caught.

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          12 months ago, # ^ |
          ← Rev. 2   Vote: I like it 0 Vote: I do not like it

          I think code forces must allow us to report these cheaters by allowing us to report their submitted code... see this one, he is in my college

          C: 236559653

          A: 236536174

          he even cheated in problem A and he is a Specialist.

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    3 years ago, # ^ |
      Vote: I like it +14 Vote: I do not like it

    changing your profile picure, and commenting nice everywhere will not make your contribution positive.

    because you're still a dirty cheater

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    3 years ago, # ^ |
      Vote: I like it -18 Vote: I do not like it

    Carrot didn't work well in the last contest either :(

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7 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Carror extension isn't working from last contest.

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    7 months ago, # ^ |
      Vote: I like it +1 Vote: I do not like it

    Yes, currently if you go to a codeforces page, you get a human verification test. CF's API is also not working on TLE (the discord bot), so you probably have no better option than to just wait.

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