Analysis of Amusement Park from the Japanese Open Contest 2017
Analysis of City from the Japanese Olympiad in Informatics Spring Camp 2017
Analysis of Airline Route Map from the Japanese Olympiad in Informatics Spring Camp 2018
Analysis of Broken Device from the Japanese Olympiad in Informatics Spring Camp 2017
Analysis of Navigation from the Japanese Olympiad in Informatics Spring Camp 2015
Analysis of Coins from the Practice Section of the International Olympiad in Informatics 2017