data/cycle/graph_structure/hard/graph1009.txt

26 28
6 19
0 2
0 4
19 8
2 11
16 23
10 23
15 21
25 11
9 17
8 9
5 7
3 2
6 22
20 13
5 13
14 25
12 25
0 1
2 4
20 12
24 23
11 16
19 1
3 0
21 18
21 5
1 18