The Central European Olympiad in Informatics (CEOI) is an annual informatics competition for secondary school students. Each of the parcitipating central European countries (plus one or two guest countries, and a local team from the host area) 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 computing contests. The first CEOI was held in 1994 (Romania, founder of the CEOI), five years after the first IOI.