4 10
1 1 0.0
1 2 0.5042662428439441
1 3 0.0
1 4 0.0
2 2 0.0
2 3 -0.6122063067548755
2 4 0.0
3 3 0.0
3 4 0.7282840149070885
4 4 0.0