I selection round to UJGOI 2025

The first selection round starts on Sunday at 10:00 at this link. The round lasts 5 hours.

To check whether you are registered for the junior olympiad, find yourself at this link. For the girls' olympiad, use this link. If you want to take part in both olympiads, you must be on both lists.

If you are not registered for either olympiad, you can put that right at reg.uoi.ua.

A reminder that every participant competing officially who wants to reach the final must follow the proctoring rules. If a participant is unable to follow those rules, we still recommend sitting this round. They will not be able to reach the final on the strength of it, but they will be better prepared for the following selection rounds.

The best 10 participants in each category — junior and girls' separately — go through to the final stage of the respective olympiad. Those who do not go through on the strength of this round will still have two more rounds to reach the final.

A reminder that the girls' olympiad is open to all girls attending school, and the junior olympiad to all school students born in 2010 or later.

We strongly recommend taking part in the practice round, and also solving the problems from this contest (one problem from it will be the first problem of the round) and from this contest (one problem from it will be the second problem of the round).