4 10
1 1 0.0
1 2 -0.23344180271828605
1 3 0.0
1 4 0.0
2 2 0.0
2 3 -0.8495086765855104
2 4 0.0
3 3 0.0
3 4 0.09631807585616113
4 4 0.0