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QOJ

Category: Japan - JOI Open Contest (日本情報オリンピック通信教育)

Location: Contest Category/Olympiad in Informatics/Japan - JOI Open Contest (日本情報オリンピック通信教育)

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Category	#(Contests)	#(Problems)
JOI Open Contest 2015		3
JOI Open Contest 2016		3
JOI Open Contest 2017		3
JOI Open Contest 2018		4
JOI Open Contest 2019		3
JOI Open Contest 2020		3
JOI Open Contest 2021		3
JOI Open Contest 2022		3
JOI Open Contest 2023		3
JOI Open Contest 2024		3