16
0 9 15.0
1 13 14.0
2 1 13.0
3 5 12.0
4 12 10.0
5 0 9.0
6 8 11.0
7 4 8.0
8 14 2.0
9 2 1.0
10 15 6.0
11 7 4.0
12 10 3.0
13 3 5.0
14 11 7.0
15 6 0.0
0 5 0
1 2 1
2 9 2
3 13 3
4 7 4
5 3 5
6 15 6
7 11 7
8 6 8
9 0 9
10 12 10
11 14 11
12 4 12
13 1 13
14 8 14
15 10 15