4 10
1 1 0.0
1 2 -0.6727974967464708
1 3 0.0
1 4 0.0
2 2 0.0
2 3 -0.5813846062753819
2 4 0.0
3 3 0.0
3 4 0.7638904646176442
4 4 0.0