10升の油を 7升枡と3升枡を使って 5升ずつに分けよ
平山諦『和算の歴史 その本質と発展』(ちくま学芸文庫ヒ/10/1 isbn:9784480090843 2007/07/10)p.028
42 10升の油を 7升枡と3升枡を使って 5升ずつに分けよ
[移す前の]赤色の枡から青色の枡へ移す
[10] [7] [3]
-------------
[10] [0] [0]
[3] [7] [0]
[3] [4] [3]
[6] [4] [0]
[6] [1] [3]
[9] [1] [0]
[9] [0] [1]
[2] [7] [1]
[2] [5] [3]
[5] [5] [0]
[5] [2] [3]
[8] [2] [0]
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- -
[別解]
[5][5][0]になるのが1step遅いが[5][5][0]ができるまでに,[1]から[8]までに分けられている.
[10] [7] [3]
------------
[10] [0] [0]
[7] [0] [3]
[7] [3] [0]
[4] [3] [3]
[4] [6] [0]
[1] [6] [3]
[1] [7] [2]
[8] [0] [2]
[8] [2] [0]
[5] [2] [3]
[5] [5] [0]