Ikumi Hide

Basic data

Personal

• Born, grown up, and currently living in Saitama, Japan
• Language: Japanese (Native), English (Fluent, TOEFL iBT: 107), Korean (Intermediate), French (Intermediate), Tatar (Lower-intermediate), (Actually, I like to learn languages so I sometimes feel like learning others)
• Interests: mathematical / computational biology, combinatorics, graph theory, exponential algorithms, computational geometry, NLP.

Academics

• Pursuing MSc in theoretical ecology, The University of Tokyo, 2018-
• Graduate exchange student at University of British Columbia, 2018
• BSc in ecology, The University of Tokyo, 2013-2018
• Kaisei Senior High School, 2010-2013
• Kaisei Junior High School, 2007-2010

Programming contest basic data

• AtCoder ID: tozangezan Link
• Codeforces ID: TozanSoutherpacks Link
• Topcoder ID: tozangezan Link
• PKU Judge Online ID: tozangezan
• Aizu Online Judge ID: tozangezan

Achievements

International onsite contests

• 11th place at Distributed Code Jam 2017 World Finals Link
• 8th place at Distributed Code Jam 2016 World Finals Link
• 14th place at ACM-ICPC 2016 World Finals Link
• 20th place at Facebook Hacker Cup Final Round Link
• 7th place (silver medal) at ACM-ICPC 2014 World Finals Link
• 39th place (silver medal) at International Olympiad in Informatics 2012 Link
• 39th place (bronze medal) at Asia-Pacific Informatics Olympiad 2012 Link
• 24th place (bronze medal) at Asia-Pacific Informatics Olympiad 2011 Link

Other onsite contests

• 3rd award (8th place) at Samsung Collegiate Programming Contest 2016
• 2nd place at ACM-ICPC 2015 Tsukuba Regional Contest
• 3rd place at ACM-ICPC 2013 Chia-Yi Regional Contest
• 2nd place at PC Concours high school programming contest 2012
• 2nd place at Supercomputing Programming Contest 2012
• Silver medal (4th place) at Japanese Olympiad in Informatics 2012 Link
• 1st place at PC Concours high school programming contest 2011
• 1st place at Supercomputing Programming Contest 2011
• Bronze medal (finalist) at Japan Biology Olympiad 2011 Link
• Selection camp finalist at Japanese Olympiad in Informatics 2011 Link
• 2nd place at PC Concours high school programming contest 2010
• Selection camp finalist at Japanese Olympiad in Informatics 2010 Link

Contributions

• Host Scientific Committee member at International Olympiad in Informatics 2018
• International Scientific Committee member at International Olympiad in Informatics 2017 Link
• Student coach at Japanese Olympiad in Informatics 2013-
• Problem writer / tester at AtCoder
• Problem writer at Topcoder Link

Career

• Software Engineering Internship at Google Tokyo, 2017
• Software Engineering Internship at Indeed Tokyo, 2015

Scientific Articles

• Incorrect implementations of the Floyd–Warshall algorithm give correct solutions after three repeats: Link

URL

• Blog (in Japanese): Link
• Youtube video channel (in English): Link

Files

Algorithm lecture slides

• Calculating modulo inverse: Link
• Number of Points on Convex Hull: Link
• Parallel Binary Search: Link
• Introduction to Computational Geometry, JOI 2017 spring training camp (in Japanese): Link
• DP Optimization, IOI 2015 Japanese team training camp (in Japanese): Link