4 10
1 1 0.0
1 2 -0.4288421480706239
1 3 0.0
1 4 0.0
2 2 0.0
2 3 0.8745658775413118
2 4 0.0
3 3 0.0
3 4 -0.7261585513215487
4 4 0.0