RECENT NEWS

Sponsors
Sponsors

We gratefully acknowledge our esteemed sponsors for their valuable support, which drives the energy of this competition and inspires every participant to reach new heights.

Participants
Participants

CEOI 2025 warmly welcomes all participating countries and wishes them the best of luck: Austria, Bulgaria, Croatia, Czechia, Georgia, Germany, Hungary, Moldova, Poland, Romania, Serbia, Slovakia, Slovenia, Switzerland, Ukraine.

Environment - virtual machine
Environment - virtual machine

The software environment of CEOI 2025 consists of a virtual machine that runs Ubuntu Linux 24.04 LTS. Download the files.

Previous CEOIs
Previous CEOIs

CEOI, first held in 1994 in Romania, is an annual competition that fosters young talent in informatics and encourages international collaboration and cultural exchange.

COMPETITION

Environment and rules

Participants

PHOTO GALERY

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A Hub of Renowned Festivals

Cluj-Napoca is a vibrant cultural center in Romania, hosting a diverse array of internationally acclaimed festivals. From the prestigious Transylvania International Film Festival (TIFF), a top-40 global film event, to the massive electronic music spectacle Untold and the genre-blending Electric Castle set in a historic castle.

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Abstract: Cluj-Napoca

In the historical region of Transylvania, in a picturesque area, the City of Cluj-Napoca quietly awaits to be discovered. Once you descend into the city and feel its vibe, you’ll be forever charmed.

See all galleries

Explore our complete photo collection from Cluj-Napoca and beyond.