>>770,771
せっかくなのでこのテストデータを作って検証してみましたが、全部合っていました、さすがですね
それにしても他人のプログラムって動かすことはできても、理解するのは困難ですね
>>772
Mathematicaは残念ながら持っていないので検証できませんでした

b = 8 c = 6 d = 2 a = 8901236745
b = 4 c = 3 d = 2 a = 0123784569
b = 4 c = 5 d = 2 a = 8123904567
b = 2 c = 5 d = 2 a = 0178234569
b = 0 c = 5 d = 3 a = 5670123489
b = 9 c = 3 d = 4 a = 3459016782
b = 5 c = 1 d = 7 a = 1253467890
b = 4 c = 6 d = 2 a = 8923014567
b = 6 c = 7 d = 2 a = 8901253467
b = 7 c = 5 d = 4 a = 5789016234
b = 4 c = 2 d = 2 a = 0123674589
b = 6 c = 4 d = 5 a = 4678950123
b = 7 c = 4 d = 4 a = 4789056123
b = 4 c = 5 d = 4 a = 6783901245
b = 8 c = 1 d = 5 a = 1238456790
b = 0 c = 2 d = 6 a = 2345670189
b = 3 c = 7 d = 1 a = 9120345678
b = 9 c = 4 d = 2 a = 4901256783
b = 8 c = 3 d = 6 a = 3456890712
b = 2 c = 5 d = 3 a = 0178923456