// -*- c++ -*-

#include <iostream>

#include <fstream>

#include <list_graph.h>

#include <smart_graph.h>

#include <dimacs.h>

#include <edmonds_karp.h>

#include <time_measure.h>

//#include <graph_wrapper.h>

#include <preflow.h>

#include <for_each_macros.h>

using namespace hugo;

// Use a DIMACS max flow file as stdin.

// read_dimacs_demo < dimacs_max_flow_file

//   struct Ize {

//   };

//   struct Mize {

//     Ize bumm;

//   };

//   template <typename B>

//     class Huha {

//     public:

//       int u;

//       B brr;

//     };

int main(int, char **) {

  typedef ListGraph MutableGraph;

//  typedef SmartGraph Graph;

  typedef ListGraph Graph;

  typedef Graph::Node Node;

  typedef Graph::EdgeIt EdgeIt;

//   Mize mize[10];

//   Mize bize[0];

//   Mize zize;

//   typedef Mize Tize[0];

//   std::cout << &zize << " " << sizeof(mize) << sizeof(Tize) << std::endl;

//   std::cout << sizeof(bize) << std::endl;

//   Huha<Tize> k;

//   std::cout << sizeof(k) << std::endl;

//   struct Bumm {

//     //int a;

//     bool b;

//   };

//   std::cout << sizeof(Bumm) << std::endl;

  Graph G;

  Node s, t;

  Graph::EdgeMap<int> cap(G);

  readDimacsMaxFlow(std::cin, G, s, t, cap);

  Timer ts;

  Graph::EdgeMap<int> flow(G); //0 flow

  Preflow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > 

    pre_flow_test(G, s, t, cap, flow);

  MaxFlow<Graph, int, Graph::EdgeMap<int>, Graph::EdgeMap<int> > 

    max_flow_test(G, s, t, cap, flow);

  {

    std::cout << "preflow ..." << std::endl;

    ts.reset();

    pre_flow_test.run();

    std::cout << "elapsed time: " << ts << std::endl;

    std::cout << "flow value: "<< pre_flow_test.flowValue() << std::endl;

  }

  {

    std::cout << "physical blocking flow augmentation ..." << std::endl;

    FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0);

    ts.reset();

    int i=0;

    while (max_flow_test.augmentOnBlockingFlow<MutableGraph>()) { ++i; }

    std::cout << "elapsed time: " << ts << std::endl;

    std::cout << "number of augmentation phases: " << i << std::endl; 

    std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;

  }

  {

    std::cout << "faster physical blocking flow augmentation ..." << std::endl;

    FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0);

    ts.reset();

    int i=0;

    while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) { ++i; }

    std::cout << "elapsed time: " << ts << std::endl;

    std::cout << "number of augmentation phases: " << i << std::endl; 

    std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;

  }

  {

    std::cout << "on-the-fly blocking flow augmentation ..." << std::endl;

    FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0);

    ts.reset();

    int i=0;

    while (max_flow_test.augmentOnBlockingFlow2()) { ++i; }

    std::cout << "elapsed time: " << ts << std::endl;

    std::cout << "number of augmentation phases: " << i << std::endl; 

    std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;

  }

  {

    std::cout << "on-the-fly shortest path augmentation ..." << std::endl;

    FOR_EACH_LOC(Graph::EdgeIt, e, G) flow.set(e, 0);

    ts.reset();

    int i=0;

    while (max_flow_test.augmentOnShortestPath()) { ++i; }

    std::cout << "elapsed time: " << ts << std::endl;

    std::cout << "number of augmentation phases: " << i << std::endl; 

    std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;

  }

  return 0;

}