UPD: Contest is over. Some links: Scoreboard of official contestants, Scoreboard of Open Contest, Problem Materials including Editorial (only in Korean)
Hello, everyone!
We are holding an Open Contest so that anyone can try solving the problems from the 2026 Korea IOI Team Selection Test. There were two rounds: Round 1 and Round 2.
The duration of each contest is 5 hours, but you can start any time during February 14 (Sat) 01:00 UTC – February 23 (Mon) 14:59 UTC.
Contest information is as follows. Details, including the contest website, can be found in the bottom of the announcement here.
- 5 hours / 4 problems per contest, 100 points per problem
- Statement languages: Korean and English
- C++17, C++20 both submittable
Note that the problems are already publicly open, so you may discuss problems of the contest. The open contest is just there for your convenience.
We look forward to your participation :)









First!
nobody cares
First!
is really interesting bro!!! thank you for information.
not first, second and third
Are the korean standings public somewhere?
Not for now, official standings will be uploaded once it's finalized.
Will the unofficial rankings (those of participants of the open contest) be available?
Yes
Are you going to publish editorial?
It's published here, but only in Korean.
South Korea or North Korea?
I'm pretty sure North Korea doesn't participate in IOI