16 28
1 2 0.890625
2 3 -0.9609375
1 4 -0.875
3 4 0.0703125
1 5 0.078125
2 6 0.984375
5 6 0.578125
3 7 -0.7890625
6 7 0.0078125
4 8 0.125
5 8 -0.09375
7 8 -0.8359375
5 9 0.5078125
6 10 0.890625
9 10 0.3203125
7 11 0.96875
10 11 -0.9296875
8 12 -0.2265625
9 12 0.4296875
11 12 -0.2890625
9 13 -0.703125
10 14 -0.734375
13 14 0.90625
11 15 -0.8828125
14 15 0.1328125
12 16 -0.234375
13 16 0.6953125
15 16 0.7890625