4 10
1 1 0.0
1 2 -0.3837069442114257
1 3 0.0
1 4 0.0
2 2 0.0
2 3 1.4854574253239077
2 4 0.0
3 3 0.0
3 4 1.3285131810394366
4 4 0.0