6 21
1 1 0.0
1 2 0.08495234387013627
1 3 0.0
1 4 0.0
1 5 0.0
1 6 0.0
2 2 0.0
2 3 1.456955140630941
2 4 0.0
2 5 0.0
2 6 0.0
3 3 0.0
3 4 0.1979640438150425
3 5 0.0
3 6 0.0
4 4 0.0
4 5 0.07141820772323894
4 6 0.0
5 5 0.0
5 6 1.2154025330450158
6 6 0.0