making above uhown graph
g . addEdge ( 0 , 1 ) NEW_LINE g . addEdge ( 0 , 7 ) NEW_LINE g . addEdge ( 1 , 2 ) NEW_LINE g . addEdge ( 1 , 7 ) NEW_LINE g . addEdge ( 2 , 3 ) NEW_LINE g . addEdge ( 2 , 8 ) NEW_LINE g . addEdge ( 2 , 5 ) NEW_LINE g . addEdge ( 3 , 4 ) NEW_LINE g . addEdge ( 3 , 5 ) NEW_LINE g . addEdge ( 4 , 5 ) NEW_LINE g . addEdge ( 5 , 6 ) NEW_LINE g . addEdge ( 6 , 7 ) NEW_LINE g . addEdge ( 6 , 8 ) NEW_LINE g . addEdge ( 7 , 8 ) NEW_LINE print ( g . countEdges ( ) ) NEW_LINE