data/hamilton/graph_description/easy/graph100.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 7, and the edges are: (3,5) (5,6) (2,0) (4,3) (6,1) (6,7) (4,1) (2,4) (2,6) (1,0) (5,2) (4,5) (7,0) (2,3) (3,0).