hbxql's blog

Will there be more than two Div 1 rounds in May?
By hbxql, history, 4 years ago, In English

For a year or two there seems to be less div 1 rounds available, and it seems there is only one more in May. Will there be another div 1 round?

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4 years ago, # |
← Rev. 2   Vote: I like it +207 Vote: I do not like it

AtCoder holds an ARC (rated for $$$\leq 2799$$$) every week.
Why can't Div. 1.5 be held also on Codeforces? They seem to be easier to make, hence they could be held more frequently than current Div. 1.
Is Div. 1.5 speedforces? I don't think so. I've never solved a div1D or upper during a contest, so I think that an interesting competition for yellows and lower reds can be made without problems as difficult as current div1E/F.

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    4 years ago, # ^ |
      Vote: I like it -47 Vote: I do not like it

    shouldn't yellows and lower reds train to solve 1D then, rather than hoping for a contest where they can solve more approachable problems?

    And btw, you say that you haven't solved any 1D ever. This means that writing div2 contests (which are frequent) is good for you? (since they have problems up-to level 1C (sometimes 1D).

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      4 years ago, # ^ |
        Vote: I like it +5 Vote: I do not like it

      It's not hoping for a contest with more approachable problems. It's hoping for more rated contests.
      Div. 1.5 could be a compromise because it contains div1D and easy div1E.

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        4 years ago, # ^ |
          Vote: I like it -61 Vote: I do not like it

        i don't get it.... even div2 rounds contain div1D in the form of 2F. And div1E is extremely hard (>2800 rate most of the time which even deep reds can't touch).

        So what's the problem with writing div2 for you? (other than the fact that you won't get rating)

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    4 years ago, # ^ |
      Vote: I like it +50 Vote: I do not like it

    Atcoder does not hold an ARC every week. In fact, Codeforces held 8 div1 rounds in the last three months. 3 in April, 3 in March and 2 in February. In the same time period Atcoder also held 8 rounds that were either ARC or AGC.

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      4 years ago, # ^ |
        Vote: I like it +17 Vote: I do not like it

      Oops, that's right. Since I'm new to AtCoder and I saw ABC on Saturday and ARC on Sunday for 3 weeks in a row, I thought that ARC/AGC was every week.
      Still, making Div. 1.5 should be easier (in fact, some recent Div. 2 would be already suitable for Div. 1.5, otherwise it would be enough to add a problem of div1D/E level).

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

        Lets say you have a Div. 1.5 implemented, but how much upper bound of the rated range do you expect it to be ?

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          4 years ago, # ^ |
            Vote: I like it -12 Vote: I do not like it

          Approximately the rating of the hardest problem.

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

            I mean usually a div2F is around 2500 and above.

            Do you mean the round would be rated for people < 2600 ?

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              4 years ago, # ^ |
              ← Rev. 2   Vote: I like it +18 Vote: I do not like it

              Ok, maybe that's too much.
              Idea: since a Div. 2 or Div. 1.5 may become speedforces for higher rated participants, multiply each rating change by $$$\min(1, \max(0, \frac{h-p}{h-k}))$$$, where $$$k = 2100$$$, $$$h =$$$ rating of the highest problem, $$$p =$$$ rating of the participant.

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

                You could have just given me a number for rated range upper bound lol.

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

                But then, just like ARC, we would need to have a lowerbound too, and I dont see it worth anyways to keep it lower than < expert.

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

                  ARC has no lower bound at the moment (?)

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

                  Oh ok, nvm, that was my bad. I got into AGC lowerbound.

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

    Discussed before.

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

Well, there are no other div2 rounds in the schedule either. Though I believe they will appear later.

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

    Yes, On average there were 2 educational rounds every month. I believe it will be added soon.

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4 years ago, # |
  Vote: I like it +77 Vote: I do not like it

Orz more rounds please

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