16 28
1 2 0.5703125
2 3 0.703125
1 4 -0.3515625
3 4 0.8671875
1 5 -0.375
2 6 -0.5390625
5 6 0.3359375
3 7 0.203125
6 7 -0.7109375
4 8 -0.9296875
5 8 0.0078125
7 8 -0.0703125
5 9 0.53125
6 10 -0.65625
9 10 -0.3125
7 11 -0.1875
10 11 -0.8046875
8 12 0.8125
9 12 0.59375
11 12 0.5390625
9 13 0.7265625
10 14 -0.453125
13 14 -0.3828125
11 15 -0.1171875
14 15 1.0
12 16 0.1875
13 16 0.4375
15 16 -0.0625