25 45
1 2 0.0859375
2 3 -0.125
3 4 -0.5390625
1 5 0.671875
4 5 0.828125
1 6 -0.5703125
2 7 -0.921875
6 7 0.3125
3 8 -0.1015625
7 8 0.296875
4 9 -0.046875
8 9 0.15625
5 10 0.9375
6 10 -0.2109375
9 10 0.3515625
6 11 -0.0078125
7 12 -0.2265625
11 12 -0.609375
8 13 -0.21875
12 13 -0.4765625
9 14 -0.5625
13 14 -0.234375
10 15 -0.59375
11 15 -0.2734375
14 15 0.625
11 16 0.671875
12 17 0.9296875
16 17 0.8046875
13 18 -0.375
17 18 0.125
14 19 -0.734375
18 19 0.4453125
15 20 0.140625
16 20 0.59375
19 20 0.8984375
16 21 -0.859375
17 22 -0.25
21 22 -0.390625
18 23 0.1875
22 23 0.015625
19 24 -0.2578125
23 24 -0.25
20 25 0.4921875
21 25 0.3984375
24 25 0.7578125