方案

P1

P2

P3

P4

[1]

9H+1X

7H+1X

7H+2X

23H+4X

[16]

6H+2X

6H+5X

18H+9X

30H+16X

[17]

11H+5X

8H+8X

13H+5X

32H+18X

[18]

10H+4X

5H+2X

18H+10X

33H+16X

[19]

12H+6X

12H+9X

20H+10X

44H+25X

改进方案

9H+1X

7H+1X

18H+5X

34H+7X