5 15
1 1 0.0
1 2 1.137878717212756
1 3 0.0
1 4 0.0
1 5 0.0
2 2 0.0
2 3 0.45353259086406145
2 4 0.0
2 5 0.0
3 3 0.0
3 4 -0.2141902590729754
3 5 0.0
4 4 0.0
4 5 -1.0113316379548714
5 5 0.0