16 28
1 2 0.46875
2 3 0.3203125
1 4 -0.8671875
3 4 -0.9609375
1 5 0.9921875
2 6 0.7265625
5 6 -0.890625
3 7 0.9921875
6 7 -0.9453125
4 8 -0.921875
5 8 -0.46875
7 8 0.921875
5 9 -0.4296875
6 10 0.4453125
9 10 0.71875
7 11 -0.96875
10 11 -0.265625
8 12 -0.1796875
9 12 -0.6953125
11 12 -0.734375
9 13 0.984375
10 14 0.515625
13 14 -0.7265625
11 15 0.1796875
14 15 -0.0078125
12 16 -0.4140625
13 16 -0.5859375
15 16 -0.4765625