data/cycle/graph_structure/hard/graph100.txt

27 26
10 6
0 17
21 18
7 3
10 21
0 11
5 8
13 21
14 5
4 23
20 14
19 5
7 24
19 4
16 12
2 6
16 22
25 10
24 15
0 10
26 13
20 9
22 4
22 3
14 13
12 1