6 21
1 1 0.0
1 2 -1.0535865167247318
1 3 0.0
1 4 0.0
1 5 0.0
1 6 0.0
2 2 0.0
2 3 -1.3808097947683564
2 4 0.0
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2 6 0.0
3 3 0.0
3 4 0.006682210965276294
3 5 0.0
3 6 0.0
4 4 0.0
4 5 1.7632035554850178
4 6 0.0
5 5 0.0
5 6 -0.5058322670990182
6 6 0.0