16 28
1 2 0.671875
2 3 0.4765625
1 4 0.7734375
3 4 -0.390625
1 5 -0.53125
2 6 0.6640625
5 6 0.90625
3 7 -0.890625
6 7 -0.5859375
4 8 0.828125
5 8 0.46875
7 8 -0.21875
5 9 -0.046875
6 10 -0.7109375
9 10 0.8515625
7 11 -0.0703125
10 11 0.109375
8 12 0.65625
9 12 0.1484375
11 12 -0.078125
9 13 0.8203125
10 14 -0.5
13 14 0.484375
11 15 0.3828125
14 15 -0.125
12 16 0.859375
13 16 0.1171875
15 16 0.734375