marci@615: // -*- c++ -*-
marci@615: #include <iostream>
marci@615: #include <fstream>
marci@615: 
marci@615: #include <list_graph.h>
marci@615: #include <hugo/smart_graph.h>
marci@615: #include <hugo/dimacs.h>
marci@615: #include <hugo/time_measure.h>
marci@615: //#include <graph_wrapper.h>
marci@615: #include <max_flow.h>
marci@615: //#include <preflow_res.h>
marci@640: #include <hugo/for_each_macros.h>
marci@615: 
marci@615: using namespace hugo;
marci@615: 
marci@615: // Use a DIMACS max flow file as stdin.
marci@615: // read_dimacs_demo < dimacs_max_flow_file
marci@615: 
marci@615: 
marci@615: int main(int, char **) {
marci@615: 
marci@615:   typedef ListGraph MutableGraph;
marci@615: 
marci@615:   typedef SmartGraph Graph;
marci@615:   //  typedef ListGraph Graph;
marci@615:   typedef Graph::Node Node;
marci@615:   typedef Graph::EdgeIt EdgeIt;
marci@615: 
marci@615: 
marci@615:   Graph g;
marci@615:   Node s, t;
marci@615:   Graph::EdgeMap<int> cap(g);
marci@615:   //readDimacsMaxFlow(std::cin, g, s, t, cap);
marci@615:   readDimacs(std::cin, g, cap, s, t);
marci@615:   Timer ts;
marci@615:   Graph::EdgeMap<int> flow(g); //0 flow
marci@615:   MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > 
marci@615:     max_flow_test(g, s, t, cap, flow);
marci@615: 
marci@615:   {
marci@615:     std::cout << "preflow ..." << std::endl;
marci@615:     FOR_EACH_LOC(Graph::EdgeIt, e, g) flow.set(e, 0);
marci@615:     ts.reset();
jacint@629:     max_flow_test.preflowPhase1(MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> >::ZERO_FLOW);
marci@615:     std::cout << "elapsed time: " << ts << std::endl;
marci@615:     std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
marci@615:   }
marci@615: 
marci@615:   {
marci@615:     std::cout << "preflow ..." << std::endl;
marci@615:     FOR_EACH_LOC(Graph::EdgeIt, e, g) flow.set(e, 0);
marci@615:     ts.reset();
jacint@629:     max_flow_test.preflowPhase1(MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> >::ZERO_FLOW);
marci@615:     std::cout << "elapsed time: " << ts << std::endl;
marci@615:     std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
marci@615:   }
marci@615: 
marci@615: 
marci@615:   return 0;
marci@615: }