// -*- c++ -*-

#include <iostream>

#include <fstream>

#include <list_graph.h>

//#include <smart_graph.h>

#include <dimacs.h>

#include <edmonds_karp_1.h>

#include <time_measure.h>

#include <graph_wrapper_1.h>

class CM {

public:

  template<typename T> int get(T) const {return 1;}

};

using namespace lemon;

// 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);

//   typedef TrivGraphWrapper<Graph> TGW;

//   TGW gw(G);

//   TGW::NodeIt sw;

//   gw./*getF*/first(sw);

//   std::cout << "p1:" << gw.nodeNum() << std::endl;

//   gw.erase(sw);

//   std::cout << "p2:" << gw.nodeNum() << std::endl;

//   typedef const Graph cLG;

//   typedef TrivGraphWrapper<const cLG> CTGW;

//   CTGW cgw(G);

//   CTGW::NodeIt csw;

//   cgw./*getF*/first(csw);

//   std::cout << "p1:" << cgw.nodeNum() << std::endl;

//   //cgw.erase(csw);

//   std::cout << "p2:" << cgw.nodeNum() << std::endl;

  {

    typedef TrivGraphWrapper<const Graph> GW;

    GW gw(G);

    std::cout << "edmonds karp demo (physical blocking flow augmentation)..." << std::endl;

    GW::EdgeMap<int> flow(gw); //0 flow

    Timer ts;

    ts.reset();

    typedef GW::EdgeMapWrapper< Graph::EdgeMap<int>, int > EMW;

    EMW cw(cap);

    MaxFlow<GW, int, GW::EdgeMap<int>, EMW > max_flow_test(gw, s, t, flow, cw);

    int i=0;

    while (max_flow_test.augmentOnBlockingFlow<MutableGraph>()) { 

//     for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { 

//       std::cout<<"("<<G.source(e)<< "-"<<flow.get(e)<<"->"<<G.target(e)<<") ";

//     }

//     std::cout<<std::endl;

      ++i; 

    }

//   std::cout << "maximum flow: "<< std::endl;

//   for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { 

//     std::cout<<"("<<G.source(e)<< "-"<<flow.get(e)<<"->"<<G.target(e)<<") ";

//   }

//   std::cout<<std::endl;

    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;

  }

  {

    typedef TrivGraphWrapper<const Graph> GW;

    GW gw(G);

    std::cout << "edmonds karp demo (physical blocking flow 1 augmentation)..." << std::endl;

    GW::EdgeMap<int> flow(gw); //0 flow

    Timer ts;

    ts.reset();

    typedef GW::EdgeMapWrapper< Graph::EdgeMap<int>, int > EMW;

    EMW cw(cap);

    MaxFlow<GW, int, GW::EdgeMap<int>, EMW > max_flow_test(gw, s, t, flow, cw);

    int i=0;

    while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) { 

//     for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { 

//       std::cout<<"("<<G.source(e)<< "-"<<flow.get(e)<<"->"<<G.target(e)<<") ";

//     }

//     std::cout<<std::endl;

      ++i; 

    }

//   std::cout << "maximum flow: "<< std::endl;

//   for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { 

//     std::cout<<"("<<G.source(e)<< "-"<<flow.get(e)<<"->"<<G.target(e)<<") ";

//   }

//   std::cout<<std::endl;

    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;

  }

  {

    typedef TrivGraphWrapper<const Graph> GW;

    GW gw(G);

    std::cout << "edmonds karp demo (on-the-fly blocking flow augmentation)..." << std::endl;

    GW::EdgeMap<int> flow(gw); //0 flow

    Timer ts;

    ts.reset();

    typedef GW::EdgeMapWrapper< Graph::EdgeMap<int>, int > EMW;

    EMW cw(cap);

    MaxFlow<GW, int, GW::EdgeMap<int>, EMW > max_flow_test(gw, s, t, flow, cw);

    int i=0;

    while (max_flow_test.augmentOnBlockingFlow2()) { 

//     for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { 

//       std::cout<<"("<<G.source(e)<< "-"<<flow.get(e)<<"->"<<G.target(e)<<") ";

//     }

//     std::cout<<std::endl;

      ++i; 

    }

//   std::cout << "maximum flow: "<< std::endl;

//   for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { 

//     std::cout<<"("<<G.source(e)<< "-"<<flow.get(e)<<"->"<<G.target(e)<<") ";

//   }

//   std::cout<<std::endl;

    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;

  }

  {

    typedef TrivGraphWrapper<const Graph> GW;

    GW gw(G);

    std::cout << "edmonds karp demo (on-the-fly shortest path augmentation)..." << std::endl;

    GW::EdgeMap<int> flow(gw); //0 flow

    Timer ts;

    ts.reset();

    typedef GW::EdgeMapWrapper< Graph::EdgeMap<int>, int > EMW;

    EMW cw(cap);

    MaxFlow<GW, int, GW::EdgeMap<int>, EMW> max_flow_test(gw, s, t, flow, cw);

    int i=0;

    while (max_flow_test.augmentOnShortestPath()) { 

//     for(EdgeIt e=G.template first<EdgeIt>(); e.valid(); ++e) { 

//       std::cout<<"("<<G.source(e)<< "-"<<flow.get(e)<<"->"<<G.target(e)<<") ";

//     }

//     std::cout<<std::endl;

      ++i; 

    }

//   std::cout << "maximum flow: "<< std::endl;

//   for(EdgeIt e=G.first<EdgeIt>(); e.valid(); ++e) { 

//     std::cout<<"("<<G.source(e)<< "-"<<flow.get(e)<<"->"<<G.target(e)<<") ";

//   }

//   std::cout<<std::endl;

    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;

}