Does anybody have an idea ?

Edited by author 04.04.2010 08:24

6 6
1 2 1
2 3 2
3 1 3
4 5 1
5 6 2
6 4 3

1.00
0.00
2.00
1.00
0.00
2.00

Thanks. Was my bug as well (forgot that there can be more than one connected component).