16 28
1 2 -0.140625
2 3 -0.046875
1 4 -0.2890625
3 4 0.671875
1 5 0.3359375
2 6 0.15625
5 6 0.875
3 7 0.9453125
6 7 -0.4921875
4 8 0.546875
5 8 0.5390625
7 8 -0.8359375
5 9 -0.4921875
6 10 -0.390625
9 10 -0.0859375
7 11 -0.3671875
10 11 -0.9140625
8 12 -0.8984375
9 12 0.84375
11 12 -0.921875
9 13 0.5234375
10 14 0.0703125
13 14 0.59375
11 15 -0.1953125
14 15 -1.0
12 16 -0.7734375
13 16 -0.515625
15 16 -0.4375