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 :)