data/cycle/graph_structure/hard/graph1002.txt

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