Tiny's blog

How to unregister AtCoder contest?
By Tiny, history, 8 years ago, In English

Maybe it's not appropriate to ask such question here, but I can't find the answer by google and don't know where to ask this question. Please don't downvote...
I registered AtCoder Beginner Contest, then I changed my mind and wanted to participate in Regular Contest, but couldn't find a way to register since I can't register both contests.
Does anyone know how to solve this? Thanks in advance.

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8 years ago, # |
  Vote: I like it +19 Vote: I do not like it

Couldn't find a way to register in ARC064 and just participate in ABC048.
However, I nearly failed in a Beginner Contest T T

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7 years ago, # |
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Bump!

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    7 years ago, # ^ |
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    As of May 12th 2018, not possible. A bad design choice, going with one-click registration which is available during the contest, but cannot be undone and prevents the user from registering to another contest.

    I think people here on Codeforces often don't appreciate the amount of great work the developer team here has done. Making a functional contest system & community is kind of hard already; making it an enjoyable experience is, as seen from numerous alternatives that sometimes fail to accomplish that, an achievement that requires both sofware engineering ability and great vision.

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      7 years ago, # ^ |
        Vote: I like it +49 Vote: I do not like it

      CMIIW, but now we can update our registration (e.g. unregister the contest) via https://beta.atcoder.jp, before the contest start.

      Take an example of me registering this contest. You may see the following buttons:

      and then this:

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        7 years ago, # ^ |
        ← Rev. 2   Vote: I like it +22 Vote: I do not like it

        Was caught in the situation when the contest had already started, but thanks! This thread comes up when googling "atcoder unregister", so I'm sure someone will find your comment helpful.

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

        Too bad I'm still using non-beta version...

        Well, thanks for the information!

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