This is an International Olympiad in Informatics Statistics website.
This site is intended to give anyone an opportunity to easily contribute missing data. All changes will be checked before inclusion. Please, create a new person only if you're sure that they aren't already in the database.
For recent years the information is taken from IOI Registration system and is expected to be full and accurate. Additionally, for some Countries full data is obtained already – check the Country list for more information.
If you have a correction that is not yet supported by the system, bug report, feature request or any other related information, please contact me by e-mail. Although be aware that the data is owned by IOI, so certain requests might require IC or GA decision.
According to S2.1 of IOI Regulations: "For the IOI, a Country is a state that has an officially recognised relationship with the United Nations, UNESCO, or which has already taken part in one or more past IOIs".
For ensuring better Country statistics, there are two Countries in the database which might appear different in official data. The Federal Republic of Germany appears as Germany in 1989–1990 and the Federal Republic of Yugoslavia appears as Serbia and Montenegro in 1992–2002.
Second/Third Team Status
- At IOI 1989, the second and third teams have been ranked and they have received medals.
- For all other IOIs, where second/third teams are known, they haven't been ranked. The medals appropriate for their performance count toward their individual statistics (and are marked with an asterisk) but do not count toward their Country statistics.
In some exceptional circumstances, IOI may host an offsite competition separate from the host Country, where some teams solve the same set of tasks but from a separate location outside the host Country, managed by IOI itself. For contestants participating in the offsite competition, their medal is treated as official by the IOI. Since the ranks and the medal cutoffs are determined by the host, the ranks of offsite participants are defined by IOI as the highest rank amongst all onsite contestants scoring the same or smaller amount of points, and the medal they obtain is determined by the host's medal cutoffs.
- Author: Eduard Kalinicenko
- A huge thanks to Oleg Oshmyan for always helping me on the technical side.
- Also a big thanks to Sergey Melnik, Vjačeslavs Kaščejevs, Mārtiņš Opmanis and Fredrik Niemelä for supporting this project and giving me fresh ideas.
- Finally I would like to thank Ilham Kurnia and Mojca Miklavec for providing a massive amount of data in the early stages of this project.