//     reader.readNode("source",s).readNode("target",t)

 //       .readEdgeMap("capacity",cap).run();

 //     LemonReader reader(std::cin);

 //     NodeSetReader<SmartGraph> nodeset(reader, graph);

 //     SmartGraph::NodeMap<int> cost(graph);

 //     nodeset.readMap("cost", cost);

 //     SmartGraph::NodeMap<char> mmap(graph);

 //     nodeset.readMap("mmap", mmap);

 //     EdgeSetReader<SmartGraph> edgeset(reader, graph, nodeset);

 //     SmartGraph::EdgeMap<std::string> description(graph);

 //     edgeset.readMap<QuotedStringReader>("description", description);

 //     NodeReader<SmartGraph> nodes(reader, nodeset);

 //     SmartGraph::Node source;

 //     nodes.readNode("source", source);

 //     SmartGraph::Node target;

 //     nodes.readNode("target", target);

 //     AttributeReader<> attribute(reader, "gui");

 //     std::string author;

 //     attribute.readAttribute<LineReader>("author", author);

 //     int count;

 //     attribute.readAttribute("count", count);

 //     PrintReader print(reader);

 //     reader.run();

 //     for (SmartGraph::NodeIt it(graph); it != INVALID; ++it) {

 //       std::cout << cost[it] << ' ' << mmap[it] << std::endl;

 //     }

 //     for (SmartGraph::EdgeIt it(graph); it != INVALID; ++it) {

 //       std::cout << description[it] << std::endl;

 //     }

 //     std::cout << "author: " << author << std::endl;

 //     std::cout << "count: " << count << std::endl;

 //     std::cout << "source cost: " << cost[source] << std::endl;

 //     std::cout << "target cost: " << cost[target] << std::endl;

 //     std::cout.flush();