data/cycle/graph_structure/hard/graph1007.txt

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