data/cycle/graph_description/medium/graph1.txt

In an undirected graph, (i,j) means that node i and node j are connected with an undirected edge.
The nodes are numbered from 0 to 10, and the edges are: (6,8) (8,4) (5,10) (3,10) (4,9) (0,7) (0,2) (3,6) (7,8) (8,1).