5 15
1 1 0.0
1 2 0.6987320628406135
1 3 0.0
1 4 0.0
1 5 0.0
2 2 0.0
2 3 0.3166678085790076
2 4 0.0
2 5 0.0
3 3 0.0
3 4 -0.861558487497224
3 5 0.0
4 4 0.0
4 5 -0.18965798053672084
5 5 0.0