+ shortcut1_graph_init(&s1g);
+ test_adjacency("shortcut1 graph", &s1g.sg, shortcut1_adjacency);
+
+ shortcut2_graph_init(&s2g);
+ test_adjacency("shortcut2 graph", &s2g.sg, shortcut2_adjacency);
+
+ negacycle_graph_init(&ng);
+ test_adjacency("negacycle graph", &ng.sg, negacycle_adjacency);
+