International Olympiad in Informatics
The Results

About this website

I began this project when I realized there was no website where you could easily access the results of all the IOI. Futhermore, sometimes there was no consistency among existing websites regarding the format of results, so I tried to address that problem as well. Finally, I chose to put all information in Microsoft Excel because that way you can have instant flexibility on the data. Also you can import the data to some sort of database very easily, so maybe some day this will grow out into something like what the IMO has had for years.

What have I done?

• Imported the results of all the IOI into Microsoft Excel using the fullest possible information I could find on the Internet (see the Downloads section for more info on what is available).
• Converted it all to a common format: same column names, layout, country names for all years. I even made such a layout that you can easily print the worksheets.
• Converted contestants’ names so that the same person has the same name in every year. This was done by using various algorithms to determine similar names and checking them by hands afterwards to decide if they really might be the same person (same country and two consecutive years, for example). Furthermore, I performed some more checks against existing information. Obviously, there are no guarantees that I have found them all and correctly, but I honestly believe the percentage of successful conversion is very high.
• Combined all IOI medalists into one separated worksheet. Also created a worksheet with the information on medal cutoffs with a chart provided.
• Using available data, created 2 separate worksheets with information on how many medals each contestant and country has earned.

Notes

There are some further notes I would like to make about the data. You can download the full .xlsx file below, but I have also saved each year’s results as a .pdf and .csv file for better accessibility. If the .xlsx changes, the corresponding .pdf and .csv will be updated as well. Next, for ensuring better country statistics, there are 2 countries in the data which might appear different in official data. Here, 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. Furthermore, it appears that there are only two contestants sharing the same name in the data: Chen Zheng (first from China in 1993 and 1995, second from China in 2000). Keep this in mind working with the data. Finally, some notes regarding the second and third teams of a single country. I have found data on them in the following IOI: 1989, 1996, 2003, 2004, 2007, 2009, 2010 and 2011. In 1989, 1996 and 2004 those teams are ranked in the official data, so I counted their members towards the medalists (and they appear in the medalists’ worksheet without a team number). For other years they are stated as unranked in the official data, so I didn’t count their members towards the medalists. I believe this is the correct way to do this.

Downloads

(Content is now inaccessible, but the changelog is preserved)
(Changelog)

• IOI results by year:

  Year	Place	Dates	What is available for medalists?	What is available for non-medalists?
  1989	Pravetz, Bulgaria	1989-05-16 to 1989-05-19	Full results	Full results with names
  1990	Minsk, Belarus	1990-07-15 to 1990-07-21	Total scores only	Nothing
  1991	Athens, Greece	1991-05-19 to 1991-05-25	Total scores only	Nothing
  1992	Bonn, Germany	1992-07-11 to 1992-07-21	Total scores only	Nothing
  1993	Mendoza, Argentina	1993-10-16 to 1993-10-25	Total scores only	Nothing
  1994	Haninge, Sweden	1994-07-03 to 1994-07-10	Full results	Nothing
  1995	Eindhoven, Netherlands	1995-06-26 to 1995-07-03	Full results	Full results with names
  1996	Veszprém, Hungary	1996-07-25 to 1996-08-02	Total scores only	Total scores only with names
  1997	Cape Town, South Africa	1997-11-30 to 1997-12-07	Full results	Full results with names
  1998	Setúbal, Portugal	1998-09-05 to 1998-09-12	Total scores only	Total scores only with names
  1999	Antalya-Belek, Turkey	1999-10-09 to 1999-10-16	Total scores only	Nothing
  2000	Beijing, China	2000-09-23 to 2000-09-30	Total scores only	Nothing
  2001	Tampere, Finland	2001-07-14 to 2001-07-21	Total scores only	Nothing
  2002	Yong-In, Republic of Korea	2002-08-18 to 2002-08-25	Day and total scores	Nothing
  2003	Kenosha, United States of America	2003-08-16 to 2003-08-23	Full results	Full results without names
  2004	Athens, Greece	2004-09-11 to 2004-09-18	Full results	Full results with names
  2005	Nowy Sącz, Poland	2005-08-18 to 2005-08-25	Full results	Nothing
  2006	Mérida, Mexico	2006-08-13 to 2006-08-20	Full results	Full results without names
  2007	Zagreb, Croatia	2007-08-15 to 2007-08-22	Full results	Full results without names
  2008	Cairo, Egypt	2008-08-16 to 2008-08-23	Full results	Full results without names
  2009	Plovdiv, Bulgaria	2009-08-08 to 2009-08-15	Full results	Full results without names
  2010	Waterloo, Canada	2010-08-14 to 2010-08-21	Full results	Full results with names
  2011	Pattaya, Thailand	2011-07-22 to 2011-07-29	Full results	Full results with names

Credits

• Author: Eduard Kalinicenko
• Original contributors: Sergey Melnik, Oleg Oshmyan
• Contributors: Ilham Kurnia, Mojca Miklavec