8 17
1 2 3 4 5 6 7 8
R 1 0
R 2 0
R 3 0
R 4 0
R 5 0
R 6 0
R 7 0
R 8 0
P 1
P 2
P 3
P 4
P 5
P 6
P 7
P 8
Q 1 8 9 17