5 15
1 1 0.0
1 2 0.8734824031349654
1 3 0.0
1 4 0.0
1 5 0.0
2 2 0.0
2 3 1.1389626234297112
2 4 0.0
2 5 0.0
3 3 0.0
3 4 -1.3718824503473324
3 5 0.0
4 4 0.0
4 5 1.0223542375020676
5 5 0.0