2021-01-06 2021/01/05 AtCoder AC数 1415->1420Submission #19222496 - Code Formula 2014 予選B Submission #19222333 - AtCoder Regular Contest 031 Submission #19222235 - AtCoder Beginner Contest 164 Submission #19222076 - AtCoder Beginner Contest 168 Submission #19217158 - AtCoder Regular Contest 004青diff残り9問になった。