data/cycle/graph_structure/hard/graph1000.txt

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