方法
S
1
S
2
S
3
1
6, 3, 3, 3, 3, 1, 1, 1, 1
6, 3, 3, 3, 3, 3, 1, 1, 1, 1
6, 3, 3, 3, 3, 3, 1, 1, 1, 1
2
3, 8
3, 1, 8
3, 1, 8