is a Japanese former competitive programmer. He is one of three people to have won both the

Google Code Jam Google Code Jam is an international programming competition hosted and administered by Google. The competition began in 2003. The competition consists of a set of algorithmic problems which must be solved in a fixed amount of time. Competitors ...

and the Facebook Hacker Cup and the only one to have also won a gold medal with a perfect score at the International Mathematical Olympiad (IMO). In

International Science Olympiads The International Science Olympiads are a group of worldwide annual competitions in various areas of the formal sciences, natural sciences, and social sciences. The competitions are designed for the 4-6 best high school students from each participa ...

, he has won three gold medals and one bronze in the International Mathematical Olympiad as well as two silver medals in the International Olympiad in Informatics (IOI).

Biography

Soejima was born in 1991. He began competitive programming in 1999. He attended Junior and Senior High School at Komaba, University of Tsukuba. During his time at high school, he participated in the

IMO IMO or Imo may refer to: Biology and medicine * Irish Medical Organisation, the main organization for doctors in the Republic of Ireland * Intelligent Medical Objects, a privately held company specializing in medical vocabularies * Isomaltooligos ...

multiple times (2005, 2007–2009) where he obtained three gold medals and one bronze. On his final attempt in 2009, he achieved a perfect score. At the same time, Soejima also participated in the 2008 and 2009 IOI where he obtained a silver medal both times. Soejima then attended The University of Tokyo where he studied

mathematics Mathematics is an area of knowledge that includes the topics of numbers, formulas and related structures, shapes and the spaces in which they are contained, and quantities and their changes. These topics are represented in modern mathematics ...

. He was part of the university team in the 2013 and 2015 International Collegiate Programming Contest which won third place both times. Soejima also attended the Graduate School of Information Science and Technology at The University of Tokyo. Soejima's other significant achievements in competitive programming include winning the 2011

, winning the 2016 Facebook Hacker Cup, and being Topcoder Open Algorithm champion in 2010, 2011 and 2016. In December 2020, Soejima retired from competitive programming. Soejima worked at AtCoder, a company that organizes programming competitions.

Achievements

Competitive programming

A more comprehensive list of achievements can be found at the Competitive Programming Hall Of Fame website. * International Olympiad in Informatics: 2 Silver (2008, 2009) * International Collegiate Programming Contest World Finals: 2 Gold medals (third place in 2013 and 2015) * Google Code Jam: Champion (2011), Second place (2019 and 2015), Third place (2018) * Facebook Hacker Cup: Champion (2016), Second place(2018), Third place (2014) * TopCoder Open: Algorithm champion (2016, 2011 and 2010) * Codeforces: Legendary Grandmaster (peak rating 3115)

Mathematics

International Mathematical Olympiad: 3 Gold (2007, 2008, 2009 (Perfect Score)) and 1 Bronze (2005)

Publications

References

External links

;Online coding profiles: * Topcoder
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* Codeforces
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* CodeChef
Makoto Soejima
{{DEFAULTSORT:Soejima, Makoto Living people 1991 births International Mathematical Olympiad participants University of Tokyo alumni 20th-century Japanese people Competitive programmers Japanese computer programmers 21st-century Japanese mathematicians