The Japanese Committee for the IOI

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.

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

10th JOI (JOI 2010/2011)

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

First Round (19th December, 2010)
On line, 3 hours, 714 students
Final Round (13th February, 2011)
On site (the National Olympics Memorial Youth Center, Tokyo), 4 hours, 60 students
Medalists
Gold Medal: Syogo Murai
Silver Medal: Kensuke Imanishi and Masaki Hara
Bronze Medal: Kazumi Kasaura

Awarding Ceremony (3rd May, 2011)


All participants at the domestic competition	Medalists at the awarding ceremony

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)

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

9th JOI (JOI 2009/2010)

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

First Round (13th December, 2009)
On line, 3 hours, 531 students
Final Round (14th February, 2010)
On site (the National Olympics Memorial Youth Center, Tokyo), 4 hours, 60 students
Medalists
Gold Medal: Syogo Murai
Silver Medal: Masaki Hara
Bronze Medal: Hiroshi Yamashita

Awarding Ceremony (24th March, 2010)


Awarding Ceremony	Medalists	Contestants for IOI 2010 Yamashita, Murai, Hara, and Imanishi (from left to right)

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

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

8th JOI (JOI 2008/2009)

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

First Round (14th December, 2008)
On line, 3 hours, 415 students
Final Round (8th February, 2009)
On site (the National Olympics Memorial Youth Center, Tokyo), 4 hours, 50 students
Medalists
Gold Medal: Makoto Soejima, Motoki Takigiku, Kazuhiro Hosaka
Silver Medal: Hiroshi Yamashita
Bronze Medal: Syogo Murai

Awarding Ceremony (24th March, 2009)


Awarding Ceremony	Guest Dr. Blagovest Sendov (Bulgarian Ambassador to Japan)	Contestants for IOI2009 Soejima, Takigiku, Hirano, and Hosaka (from left to right)

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

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

7th JOI (JOI 2007/2008)

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

First Round (16th December, 2007)
On line, 3 hours, 334 students
Problems and Data
Final Round (10th February, 2008)
On site (the National Olympics Memorial Youth Center, Tokyo), 4 hours, 48 students
Problems and Data
Medalists
Gold Medal: Makoto Soejima
Silver Medal: Eiichi Matsumoto
Bronze Medal: Syuhei Yoshida
Awarding Ceremony (24th March, 2008)

Finalists

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

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

6th JOI (JOI 2006/2007)

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

First Round (17th December, 2006)
The First Round was conducted on line. The duration was 3 hours. 145 students participated.
Problems and Data
Final Round (12th February, 2007)
36 students proceeded to the Final Round conducted at the National Olympics Memorial Youth Center in Tokyo. The duration was 3 hours.
Problems and Data
Medalists
Gold Medal: Toshiki Kataoka
Silver Medal: Yasuhito Ito
Bronze Medal: Akihiro Yamashita
Bronze Medal: Ryosuke Okuta

Awarding Ceremony (24th March, 2007)


Finalists	Guest Dr. Blagovest Sendov (Bulgarian Ambassador to Japan)

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

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


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


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


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


Japanese delegation at the closing ceremony	Japanese Medalists


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


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