Hi, everyone.↵
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The first stage of the IOI 2026 China Team Selection has ended today. The top 48 participants from the 2025 National Olympiad in Informatics (NOI) will compete for a spot on the Chinese national team for IOI 2026.↵
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The rule of selecting CHN team this year:↵
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- Homework (10%). The participants are asked to choose 4 tasks for [homework](https://qoj.ac/contest/2550) and complete 60 tasks of them.↵
- First stage (CTT; 54%; Dec 2, 2025 — Dec 4, 2025): 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%; Feb 10, 2026 — Feb 12, 2026): two contests in classic olympiad format, where each contest worthes 18% of the score.↵
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The current scoreboard can be found [here](https://docs.google.com/spreadsheets/d/1RW3yH8TGjACzyxOG3I1XvqrKROTRLQ2YpvRVS4fY4Z4/edit?gid=0#gid=0). Tasks of the first round can be found [here](https://qoj.ac/category/606)↵
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UPD1: The Day1 contest of CTS have ended.
↵
The first stage of the IOI 2026 China Team Selection has ended today. The top 48 participants from the 2025 National Olympiad in Informatics (NOI) will compete for a spot on the Chinese national team for IOI 2026.↵
↵
The rule of selecting CHN team this year:↵
↵
- Homework (10%). The participants are asked to choose 4 tasks for [homework](https://qoj.ac/contest/2550) and complete 60 tasks of them.↵
- First stage (CTT; 54%; Dec 2, 2025 — Dec 4, 2025): 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%; Feb 10, 2026 — Feb 12, 2026): two contests in classic olympiad format, where each contest worthes 18% of the score.↵
↵
The current scoreboard can be found [here](https://docs.google.com/spreadsheets/d/1RW3yH8TGjACzyxOG3I1XvqrKROTRLQ2YpvRVS4fY4Z4/edit?gid=0#gid=0). Tasks of the first round can be found [here](https://qoj.ac/category/606)↵
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UPD1: The Day1 contest of CTS have ended.




