16 28
1 2 -0.6015625
2 3 0.5625
1 4 -0.09375
3 4 -0.859375
1 5 0.296875
2 6 -0.84375
5 6 -0.9765625
3 7 -0.1015625
6 7 -0.0546875
4 8 0.5703125
5 8 -0.9765625
7 8 0.203125
5 9 -1.0
6 10 -0.078125
9 10 -0.3984375
7 11 -0.59375
10 11 0.1640625
8 12 -0.046875
9 12 -0.8359375
11 12 -0.9921875
9 13 0.625
10 14 -0.5078125
13 14 0.796875
11 15 -0.1328125
14 15 -0.1484375
12 16 -0.015625
13 16 -0.2265625
15 16 -0.6640625