5 15
1 1 0.0
1 2 -0.22768425533774983
1 3 0.0
1 4 0.0
1 5 0.0
2 2 0.0
2 3 0.8241704997429984
2 4 0.0
2 5 0.0
3 3 0.0
3 4 1.1559234497963402
3 5 0.0
4 4 0.0
4 5 -0.7621541853086368
5 5 0.0