5 15
1 1 0.0
1 2 0.8872381064983816
1 3 0.0
1 4 0.0
1 5 0.0
2 2 0.0
2 3 0.23461727002717372
2 4 0.0
2 5 0.0
3 3 0.0
3 4 -1.455366874574332
3 5 0.0
4 4 0.0
4 5 -1.2075823765977831
5 5 0.0