5 15
1 1 0.0
1 2 0.4417865161917873
1 3 0.0
1 4 0.0
1 5 0.0
2 2 0.0
2 3 1.2836414380411383
2 4 0.0
2 5 0.0
3 3 0.0
3 4 0.10399657876797584
3 5 0.0
4 4 0.0
4 5 1.214031864596106
5 5 0.0