5 15
1 1 0.0
1 2 -0.23545167710056564
1 3 0.0
1 4 0.0
1 5 0.0
2 2 0.0
2 3 -0.7564174804358006
2 4 0.0
2 5 0.0
3 3 0.0
3 4 -0.011729505610285296
3 5 0.0
4 4 0.0
4 5 1.3500658046676903
5 5 0.0