4 10
1 1 0.0
1 2 -0.06631754795139558
1 3 0.0
1 4 0.0
2 2 0.0
2 3 -0.7761843427208639
2 4 0.0
3 3 0.0
3 4 -0.8369712959048915
4 4 0.0