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.
is there any scoreboard that can be accessed in china?
I'm wondering if you can connect the participants with their cf handles.
I'm curious, but how is the homework scored (specifically on the part of setting problem)?
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
is the allegation true that being a top 50 candidate in the NOI is harder than winning gold at the IOI?