Hi, everyone.
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 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. Tasks of the first round can be found here
UPD1: The Day1 contest of CTS have ended.
UPD2: The Day2 contest of CTS have ended. Kevin114514,fake_banana,Z-301,NKheyuxiang,flying,Flamire will enter the thesis defense stage.
Auto comment: topic has been updated by Qingyu (previous revision, new revision, compare).
Auto comment: topic has been updated by Crysfly (previous revision, new revision, compare).
> stalked random one
> grandmaster
> another one
> grandmaster
are sure it isn't Legendary grandmaster?
> anime girl profile pics
First contest of the final stage of the China Team Selection is going to start in an hour. Live scoreboard & tasks will be updated once they were ended.
Auto comment: topic has been updated by Crysfly (previous revision, new revision, compare).
Auto comment: topic has been updated by Crysfly (previous revision, new revision, compare).
Auto comment: topic has been updated by Crysfly (previous revision, new revision, compare).
what is defense stage? why do they need a defense stage?
The defense stage is where participants have to answer questions from a jury about an algorithmic paper that they wrote.
*Actually not really. There might also be some random questions like "why didn't you perform well on contest-X" or "how would you think the behavior of student Y"
I'm rooting for Kevin114514! A few years ago he didn't think he could make the team, but now he is in the lead. I hope he can achieve his dream.
Final round of the team selection has been ended. Kevin114514,fake_banana,Z-301,NKheyuxiang will represent China to participate in the IOI 2026.
Kevin114514 will win IOI 2026! His outstanding performances in the two CTS contests have undoubtedly secured him the top spot in the team.
(Also, I'm a big fan of fake_banana and Z-301, who have both shown consistent results across all five contests. I’d like to give a shout-out to my friends Portulaca, Otomachi_Una, and Urd-, who were ranked 1st, 2nd, and 4th after the first stage but unfortunately didn’t make it to the thesis defense stage after CTS. Wishing them all the best!)
_istil will win IOI 2027!
fake_banana will win IOI 2026!
Kevin114514,fake_banana,Z-301,Quizx deserved in contest