Central European Olympiad in Informatics


The Central European Olympiad in Informatics is an annual informatics competition for secondary school students. Each of the participating central European countries sends a team of up to four contestants, a team leader and a deputy team leader. The contestants compete individually, i.e. a team score is not calculated. Competitors are selected through national competitive programming contests.
The contest consists of two days computer programming, solving problems of an algorithmic nature. The structure of these competition days is described in the article about the International Olympiad in Informatics, which served as a role model for the more local CEOI.
The first CEOI was held in 1994 in Romania, five years after the first IOI.

List of CEOI websites and locations

  • was supposed to be held in Zagreb, Croatia, was held online instead.
  • was held in Nagykanizsa, Hungary.
  • was held in Bratislava, Slovakia.
  • was held in Warsaw, Poland.
  • was held in Ljubljana, Slovenia.
  • was held in Piatra Neamț, Romania. Participants: Bulgaria, Croatia, Czech Republic, Georgia, Germany, Hungary, Moldova, Poland, Romania, Slovakia, Slovenia, Switzerland.
  • was held in Brno, Czech Republic. Participants: Croatia, Czech Republic, Georgia, Germany, Hungary, Poland, Romania, Slovakia, Slovenia, Switzerland.
  • was held in Jena, Germany.
  • was held in Primošten, Croatia. Participants: Croatia, Czech republic, Germany, Hungary, Poland, Romania, Switzerland, Slovakia and Slovenia.
  • was held in Tata, Hungary. Participants: Bulgaria, Croatia, Czech Republic, Germany, Hungary, Poland, Romania, Israel, Switzerland, The Netherlands, Slovakia and Slovenia.
  • was held in Gdynia, Poland. Participants: Bulgaria, Croatia, Czech Republic, Germany, Hungary, Poland, Romania, Slovakia, Slovenia and Switzerland.
  • was held in Košice, Slovakia. Participants: Bulgaria, Croatia, Czech Republic, Germany, Hungary, Poland, Romania, Slovakia, and Switzerland.
  • was held in Târgu Mureş, Romania. Participants: Croatia, Czech Republic, Germany, Hungary, Poland, Romania, Slovakia, Switzerland, USA., Serbia, Moldova.
  • was held in Dresden, Germany. Participants: Croatia, Czech Republic, Germany, Hungary, Israel, Poland, Romania, Saxony, Slovakia.
  • was held in Brno, Czech Republic. Participants: Croatia, Czech Republic, Germany, Hungary, Poland, Romania, Slovakia, Czech Republic II, Brno.
  • was held in Vrsar, Croatia. Participants: Croatia, Czech Republic, Germany, Hungary, Poland, Romania, Slovakia, Croatia II, Croatia III.
  • was held in Sárospatak, Hungary. Participants: Bosnia and Herzegovina, Croatia, Czech Republic, Estonia, France, Germany, Hungary, Poland, Romania, Sárospatak, Slovakia, Spain, The Netherlands.
  • was held in Rzeszów, Poland. Participants: Bosnia & Herzegovina, Croatia, Czech Republic, Germany, Hungary, Poland, Romania, Slovakia
  • was held in Münster, Germany. Participants: Croatia, Poland, Czech Republic, Slovenia, Netherlands, USA, Hungary, Slovakia, Romania, Iran, Germany, Westphalia
  • was held in Košice, Slovakia. Participants: Austria, Croatia, Czech Republic, Germany, Hungary, Poland, Romania, Slovakia, Slovenia, The Netherlands, Iran
  • was held in Zalaegerszeg, Hungary. Participants: Austria, Croatia, Czech Republic, Germany, Hungary, Poland, Romania, Slovakia, Slovenia, Estonia, Finland, Italy, The Netherlands
  • was held in Cluj-Napoca, Romania. Participants: Croatia, Czech Republic, Germany, Hungary, Moldova, Netherlands, Poland, Romania, Slovakia, Slovenia, USA
  • was held in Brno, Czech Republic. Participants: Bosnia-Herzegovina, Croatia, Czech Republic, Germany, Hungary, Poland, Romania, Slovakia, Slovenia, USA
  • was held in Zadar, Croatia. Participants: Bosnia-Herzegovina, Croatia, Czech Republic, Germany, Hungary, Poland, Romania, Slovakia, Slovenia
  • was held in Nowy Sącz, Poland. Participants: Belarus, Croatia, Estonia, Germany, Hungary, Latvia, Lithuania, Netherlands, Poland, Romania, Slovakia, Ukraine, USA, Yugoslavia
  • was held in Bratislava, Slovak Republic. Participants: Croatia, Czech Republic, Hungary, Poland, Romania, Slovakia, Slovenia
  • was held in Szeged, Hungary. Participants: Belarus, Croatia, Czech Republic, Estonia, Hungary, Lithuania, Poland, Romania, Slovakia, Ukraine, Yugoslavia
  • CEOI 1994 was held in Cluj-Napoca, Romania. Participants: Croatia, Czech Republic, Hungary, Moldova, Poland, Romania, Turkey, Yugoslavia