JOI logo The Japanese Olympiad in Informatics

The Japanese Committee for the IOI is a nonprofit organization, one of the activities of which is to host JOI, the Japanese Olympiad in Informatics. JOI is a competition to be held annually to select and educate students enrolled in highschools or lower grade schools in Japan, who are talented in Informatics (Computer Science) as well as programming. Those who have high ability in the area are selected according to competitions in two rounds and a one-week training camp following the competitions, aiming to participate in IOI, the International Olympiad in Informatics.
The Japanese Committee for the IOI was established in 1993. We hosted the first JOI in 1994 through the fourth JOI in 1997, until a financial difficulty made us give up continuation. After a decade of suspension, we resumed our activity in 2005 to host the fifth JOI.

mark 23rd IOI (IOI'2011) in Thailand July 21 through 29, 2011

MURAI Gets his second IOI Gold Medal, and IMANISHI, HARA and SHIROSHITA Silver.
MURAI stands the 14th place among 302 contestants!

Japanese delegation Japanese Medalists
From the left: S.Murai, M.Hara, K.Imanishi, and S.Shiroshita

mark 10th JOI (JOI 2010/2011)

The Japanese Olympiad in Informatics 2010/2011 was conducted in two rounds.

Top 18 contestants in the Final Round of the JOI were invited to attend the comptetitions held in Tokyo and Osaka on 23rd - 24th April and 3rd - 5th May, 2011. Finally, 4 students were selected as IOI contestants according to the result of the competitions done for 4 times.

Japan Team for IOI 2011 (in alphabetical order)
HARA, Masaki
IMANISHI, Kensuke
MURAI, Syogo
SHIROSHITA, Shinya
Hara, Imanishi, Murai, and Shiroshita
(from left to right)
mark 22nd IOI (IOI'2010) in Canada August 14 through 21, 2010

MURAI and HARA Get Gold Medals, IMANISHI and YAMASHITA Silver.
MURAI and HARA stand the 9th and the 16th places respectively among 300 contestants!

Japanese delegation Japanese Medalists
From the left: M.Hara, H.Yamashita, K.Imanishi, and S.Murai

mark 9th JOI (JOI 2009/2010)

The Japanese Olympiad in Informatics 2009/2010 was conducted in two rounds.

Top 16 contestants in the Final Round of the JOI were invited to attend the Spring Training held in Tokyo on 19th - 25th March, 2010. Finally, 4 students were selected as IOI contestants according to the result of the competitions done for 4 days during the camp.

Japan Team for IOI 2010 (in alphabetical order)
HARA, Masaki
IMANISHI, Kensuke
MURAI, Syogo
YAMASHITA, Hiroshi
mark 21st IOI (IOI'2009) in Bulgaria August 8 through 15, 2009

HOSAKA and TAKIGIKU Get Gold Medals, SOEJIMA Silver, and HIRANO Bronze.
HOSAKA stands the second place among 301 contestants!

Japanese delegation Japanese Medalists
From the left: Takigiku, Hosaka, Soejima, and Hirano

mark 8th JOI (JOI 2008/2009)

The Japanese Olympiad in Informatics 2008/2009 was conducted in two rounds.

Top 16 contestants in the Final Round of the JOI were invited to attend the Spring Training held in Tokyo on 19th - 25th March, 2009. Finally, 4 students were selected as IOI contestants according to the result of the examinations for 4 days during the camp.

Japan Team for IOI 2009 (in alphabetical order)
Yuichiro Hirano
Kazuhiro Hosaka
Makoto Soejima
Motoki Takigiku
mark 20th IOI (IOI 2008) in Egypt August 16 through 23, 2008

HOSAKA Gets Gold Medal, SOEJIMA Silver, MATSUMOTO and TAKIGIKU Bronze.

Japanese delegation
at the closing ceremony
Japanese Medalists

mark 7th JOI (JOI 2007/2008)

The Japanese Olympiad in Informatics 2007/2008 was conducted in two rounds.

Top 16 contestants in the Final Round of the JOI were invited to attend the Spring Training held in Tokyo on 19th - 25th March, 2008. Finally, 4 students were selected as IOI contestants according to the result of the examinations for 4 days during the camp.

Japan Team for IOI 2008 (in alphabetical order)
Kazuhiro Hosaka
Eiichi Matsumoto
Makoto Soejima
Motoki Takigiku
mark 19th IOI (IOI 2007) in Croatia August 15 through 22, 2007

KATAOKA Gets His Second Gold Medal in IOI!
YOSHIDA Silver, and MATSUMOTO Bronze.

Japanese delegation
at the closing ceremony
Toshiki Kataoka Yuki Yoshida Eiichi Matsumoto

mark 6th JOI (JOI 2006/2007)

The Japanese Olympiad in Informatics 2006/2007 was conducted in two rounds.

Top 13 contestants in the Final Round of the Japanese Olympiad in Informatics were invited to the Spring Training Camp held at the National Olympics Memorial Youth Center in Tokyo on 19th - 25th March, 2007. During the camp, lectures on informatics were given and examinations were conducted for 4 days to select 4 students as IOI contestants.

Japan Team for IOI 2007 (in alphabetical order)
Toshiki Kataoka
Eiichi Matsumoto
Ryosuke Okuta
Yuki Yoshida
mark 18th IOI (IOI 2006) in Mexico August 13 through 20, 2006

KATAOKA and WATANABE Get Gold Medals and IMAJO Bronze One!

Japanese delegation
at the closing ceremony
Toshiki Kataoka Masaki Watanabe Kentaro Imajo

mark 5th JOI (JOI 2005/2006)

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