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Блог пользователя Qingyu

Автор Qingyu, 18 часов назад, По-английски

Hi, everyone.

The first stage of the IOI 2025 China Team Selection began yesterday. The top 50 participants from the 2024 National Olympiad in Informatics (NOI) will compete for a spot on the Chinese national team for IOI 2025.

The rule of selecting CHN team this year:

  • Homework (10%): also known as mutual tests, where the students were asked to prepare a task (5%), and participate in the contests made by other students (5%)
  • First stage (CTT; 54%; Dec 3, 2024 — Dec 5, 2024): three contests in classic olympiad format, where each contest worthes 18% of the score. Top 30 participants will advance to the final stage.
  • Final stage (CTS; 36%; Jan 20, 2025 — Jan 22, 2025): two contests in classic olympiad format, where each contest worthes 18% of the score.

The current scoreboard can be found here.

Past problems of the China IOI Team Selections can be found here (first stage and final stage). I will upload all the tasks once they can be publicly shared.

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17 часов назад, # |
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is there any scoreboard that can be accessed in china?

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17 часов назад, # |
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I'm wondering if you can connect the participants with their cf handles.

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10 часов назад, # |
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I'm curious, but how is the homework scored (specifically on the part of setting problem)?

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    3 часа назад, # ^ |
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    Submit any task = 3.2p

    Task is used in mutual tests(I think any competitive programming problem will be used) = 0.6p

    Feedback from participants and coaches(the weirdest part, easy problems are getting better score) = 1.2p

    Participate in mutual tests with >=60p = 0.6p*7=4.2p

    Participate in mutual tests with rank <=20 = 0.16p*5=0.8p

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92 минуты назад, # |
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is the allegation true that being a top 50 candidate in the NOI is harder than winning gold at the IOI?