CEOI 2023

Revision en7, by lumibons, 2023-08-19 13:30:07

This week, the Central European Olympiad in Informatics 2023 (CEOI 2023) is going to take place! CEOI is a programming contest for secondary school students from countries in Central Europe. Around 50 contestants from Croatia, the Czech Republic, Germany, Hungary, Poland, Romania, Slovakia, Slovenia, and our guest countries Israel, Switzerland, and Ukraine will compete against each other, solving difficult problems of algorithmic nature. Each participating country sends 4 contestants from their national olympiads which take place in the months beforehand.

The contest consists of two days, Tuesday and Thursday, on each of which the contestants have 5 hours to solve 3 problems of varying difficulty. Each problem is worth 100 points that are distributed into multiple subtasks with different constraints that allow the participants to earn partial scores.

CEOI 2023 is hosted in Magdeburg, state capital of Saxony-Anhalt and among the most historical cities of Germany. There will be a live scoreboard during the two competition days, and we will host an online mirror around a week after CEOI. For more information about the contest, visit the official website at

We wish all CEOI contestants an enjoyable contest and a good time in Magdeburg!

-- CEOI 2023 committee

Update: The first competition day has just started. The scoreboard can be found here.

Update: The contestants are right now competiting in the second contest. As before, the scoreboard can be found here.

Update: CEOI 2023 has just concluded. With the medals awarded in the closing ceremony yesterday (see here for the final ranking), the teams are now on their way back home. We hope that everyone enjoyed the contests. Congratulations again to all participants, all medalists, and in particular to the overall winner of CEOI 2023, lucaperju!

Also, we are happy to invite you to participate in the online mirror of CEOI 2023 on Friday, August 25, 2023 at 7:00 UTC and Saturday, August 26, 2023 at 7:00 UTC! The mirror will be held on CMS which was also used for the official contest. We will open the registration closer to the start of the mirror.

Tags ceoi 2023, online mirror


  Rev. Lang. By When Δ Comment
en9 English lumibons 2023-08-27 15:20:43 569
en8 English lumibons 2023-08-22 14:39:20 1268
en7 English lumibons 2023-08-19 13:30:07 961
en6 English lumibons 2023-08-17 10:49:26 181
en5 English lumibons 2023-08-15 10:20:13 149
en4 English lumibons 2023-08-13 19:15:45 119 Tiny change: 's, and we hope to host an o' -> 's, and we will host an o' (published)
en3 English lumibons 2023-08-13 19:12:48 0 Tiny change: 'rticipant receives t' -> 'rticipant ireceives t'
en2 English lumibons 2023-08-13 19:11:16 71 Tiny change: '\n\nThis w' -> '![ ](\n\nThis w'
en1 English lumibons 2023-08-13 19:09:47 1451 Initial revision (saved to drafts)