5 15
1 1 0.0
1 2 -0.8264385386590144
1 3 0.0
1 4 0.0
1 5 0.0
2 2 0.0
2 3 -0.0984525244254323
2 4 0.0
2 5 0.0
3 3 0.0
3 4 -0.6634782863621074
3 5 0.0
4 4 0.0
4 5 1.126635922106507
5 5 0.0