7 28
1 1 0.0
1 2 -0.2226751005151545
1 3 0.0
1 4 0.0
1 5 0.0
1 6 0.0
1 7 0.0
2 2 0.0
2 3 -0.35343174875719907
2 4 0.0
2 5 0.0
2 6 0.0
2 7 0.0
3 3 0.0
3 4 -1.6164741886510325
3 5 0.0
3 6 0.0
3 7 0.0
4 4 0.0
4 5 -0.2918373627478628
4 6 0.0
4 7 0.0
5 5 0.0
5 6 -0.7614922118116233
5 7 0.0
6 6 0.0
6 7 0.8579239242923363
7 7 0.0