7 28
1 1 0.0
1 2 0.8343346754962946
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 -0.7737452414236874
2 4 0.0
2 5 0.0
2 6 0.0
2 7 0.0
3 3 0.0
3 4 -0.6778567451293886
3 5 0.0
3 6 0.0
3 7 0.0
4 4 0.0
4 5 0.8769618557368207
4 6 0.0
4 7 0.0
5 5 0.0
5 6 1.452341272741136
5 7 0.0
6 6 0.0
6 7 0.34352549057689163
7 7 0.0