用A前n(n+1)/2个数码, 恰好可以组成n个数, 其中有1个1位数,1个2位数,1个3位数,1个4位数,...,1个n位数, 当n个数的乘积最大时, 求最小的n位数。
A={1,|2, 3,| 4, 5, 6,| 7, 8, 9, 1,| 0, 1, 1, 1, 2,| 1, 3, 1, 4, 1, 5,| 1, 6, 1, 7, 1, 8, 1,| 9, 2, 0, 2, 1, 2, 2, 2,| 3, 2, 4, 2, 5, 2, 6, 2, 7,| 2, 8, 2, 9, 3, 0, 3, 1, 3, 2,| 3, 3, 3, 4, 3, 5, 3, 6, 3, 7, 3,| 8, 3, 9, 4, 0, 4, 1, 4, 2, 4, 3, 4,|4, 4, 5, 4, 6,
4, 7, 4, 8, 4, 9, 5, 0,| 5, 1, 5, 2, 5, 3, 5, 4, 5, 5, 5, 6, 5, 7,| 5, 8, 5, 9, 6, 0, 6, 1, 6, 2, 6, 3, 6, 4, 6,| 5, 6, 6, 6, 7, 6, 8, 6, 9, 7, 0, 7, 1, 7, 2, 7,| 3, 7, 4, 7, 5, 7, 6, 7, 7, 7, 8, 7, 9, 8, 0, 8, 1,| 8, 2, 8, 3, 8, 4, 8, 5, 8, 6, 8, 7, 8, 8, 8, 9,9, 0,|}
a(1)=1,
1,
a(2)=21,
3,
21,
a(3)=431,
6,
52,
431,
a(4)=6521,
9,
83,
741,
6521,
a(5)=54110,
9,
82,
721,
6311,
54110,
a(6)=541110,
9,
82,
731,
6311,
54211,
541110,
a(7)=6521110,
9,
83,
831,
7411,
74111,
652111,
6521110,
a(8)=65211100,
9,
92,
832,
8321,
74211,
742111,
6521111,
65211100,
a(9)=653211110,
9,
93,
842,
8422,
75221,
752211,
7422111,
66321110,
653211110, |