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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 》
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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,
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