最近の記事
Minimalist solution to Kirkman's schoolgirl problem ——by Liang Haisheng 2019《Pithy Formula 124 》
Minimalist solution to Kirkman's schoolgirl problem ——by Liang Haisheng 2019 《Pithy Formula 124 》 ——————————————— 1 2 4, 2 3 5, 3 4 6, 4 5 7, 5 6 1, 6 7 2, 7 1 3 2 3 5, 3 4 6, 4 5 7, 5 6 1, 6 7 2, 7 1 3, 1 2 4 3 4 6, 4 5 7, 5 6 1, 6 7 2,