tom0727's blog

A website showing CF problems difficulty
By tom0727, 3 years ago, In English

Dear all,

You may have used https://kenkoooo.com/atcoder#/table/ to check for Atcoder Problems and their difficulties. I like this tool so much that I decided to write a CF version of it (I have got permission from the author to copy the exact same style of his website).

It has been posted on my blog https://tom0727.github.io/cf-problems/.

Here is a preview of it:

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If you encounter any problems using this tool, or you have a bad experience using it on phone, please inform me, thanks!

• This list is updated automatically every day.

Update1: It is a good idea to add Login function and track AC status of the problems. I will work on this feature recently. For other features, since this page is written in pure html/css/js, it might be costly to add new complicated features. Therefore I plan to refactor this project next year if there are many people using it.

Update2: Added Login Feature! You only need to input the handle, password is not needed! Also when you mouseover a contest name, the whole name can be shown. Enjoy!

Update3: The contest names are shorter now, the rendering logic has been changed to make the page faster.

Update4: Fixed a bug where some new contest problems have rating "undefined". Now the list will not contain any problem that does not have a rating.

Update5: The tool is now updating automatically everyday.

  • Vote: I like it
  • +207
  • Vote: I do not like it

Comments Comments (26)
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3 years ago, # |
  Vote: I like it +10 Vote: I do not like it

This is wonderful. Well done.

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3 years ago, # |
  Vote: I like it +34 Vote: I do not like it

Looks amazing :o Do you have any plan to make it possible to track an account's AC status like kenkoo?

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

    Thank you for your reply! I currently do not plan to add the feature of tracking AC status, mainly because of my limited frontend knowledge and time. I may consider adding new features next year (that is when I have finished my application of graduate schools).

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

This is really good!

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

Thanks for this wonderful tool. But can you tell me how to find an educational round in that? Sorry if I'm not able to find that?

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

    Thank you for your valuable feedback! It seems that I have wrongly filtered educational rounds. I will fix this soon!

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

    Should be fixed now, please kindly check it!

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3 years ago, # |
  Vote: I like it +31 Vote: I do not like it

Thank you, very cool. Login/updating features would be great :)

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

    Thanks for the suggestion. Login feature has been added!

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

Just getting handle name and updating the table with AC status might be a quick solution while you are implementing full login features.

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

This is Amazing! Good job and keep going!

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

Thank you! It is really cool.
One request, Can you remove "Codeforces Round", "Educational Round" etc prefixes from Contest name column so that one can see Contest number only in the column itself, and don't have to hover over the contest name to see contest number in tooltip. For example, #644 (Div.3) in Div 3 list. It will be much better experience that way.

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

    Thanks for your suggestion, the names have become shorter now!

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

great, I'm going to love it :)

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

Is it not updating new contests anymore?

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

    It is updating! I just removed the gitee link, originally it is for serving Mainland China users, but because of regulations gitee is not available now.

    You can still get everything from my github blog!

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

Do you have to update it manually each time there is a new contest? I am wondering why the most recent CF rounds (745, 746) are not visible here.

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

    The update is automatic. It is done every 3 days. And for a contest if the problem ratings are not yet released, then the list will not include this contest. So please do wait for a few days, it should be appearing soon!

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

      Oh no worries, thanks! And thank you for making the tool :)

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

Amazing site. Thanks.

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

If a problem is showing green in div1.Can the the problem show green in the div2 version as well?

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

    Very nice idea! I am recently busy with plenty of things, I would definitely implement this feature once I have time!

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

      Thanks!Will it also be possible to enable/disable difficulty ratings like kenkoooo does?

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

        Yes, will put this on the TODO list!

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

This is Amazing! Good job and keep going!

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

We also have https://cftracker.netlify.app/ with nicer ui.

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