data/cycle/graph_structure/hard/graph1031.txt

26 26
5 10
6 25
13 9
10 20
22 18
1 0
15 1
2 11
21 15
16 22
12 14
23 11
25 17
20 0
17 4
6 7
2 12
5 24
10 9
10 14
5 3
0 16
25 22
0 19
15 11
10 8