4 10
1 1 0.0
1 2 -0.18501434302484235
1 3 0.0
1 4 0.0
2 2 0.0
2 3 1.168890018129707
2 4 0.0
3 3 0.0
3 4 -0.6215562871395572
4 4 0.0