Documentation Data, but vertices id's are times 10

sampledataSparce.data

18
1 10 20 1 2
2 20 30 -1 2
3 30 40 -1 2
4 20 50 1 2
5 30 60 1 -1
6 70 80 1 2
7 80 50 1 2
8 50 60 1 2
9 60 90 1 2
10 50 100 1 2
11 60 110 1 -1
12 100 110 1 -1
13 110 120 1 -1
14 100 130 1 2
15 90 120 1 2
16 40 90 1 2
17 140 150 1 2
18 160 170 1 2
-1