// -*- c++ -*-

#include <iostream>

#include <fstream>

#include <vector>

#include <cstdlib>

#include <list_graph.h>

//#include <smart_graph.h>

//#include <dimacs.h>

#include <time_measure.h>

#include <for_each_macros.h>

#include <bfs_iterator.h>

#include <bipartite_graph_wrapper.h>

#include <maps.h>

#include <max_flow.h>

using namespace hugo;

// template <typename Graph, typename EdgeCap, typename NodeCap, 

// 	  typename EdgeFlow, typename NodeFlow>

// class MaxMatching : public MaxFlow<stGraphWrapper<Graph>, 

// 				   stGraphWrapper<Graph>:: EdgeMapWrapper<EdgeCan, NodeCap>, stGraphWrapper<Graph>::EdgeMapWrapper<EdgeFlow, NodeFlow> > {

//   typedef MaxFlow<stGraphWrapper<Graph>, 

// 		  stGraphWrapper<Graph>::EdgeMapWrapper<EdgeCan, NodeCap>, 

// 		  stGraphWrapper<Graph>::EdgeMapWrapper<EdgeFlow, NodeFlow> >

//   Parent;

// protected:

//   stGraphWrapper<Graph> gw;

//   stGraphWrapper<Graph>::EdgeMapWrapper<EdgeCap, NodeCap> cap;

//   stGraphWrapper<Graph>::EdgeMapWrapper<EdgeFlow, NodeFlow> flow;

//   //graph* g;

//   //EdgeCap* edge_cap;

//   //EdgeFlow* edge_flow;

// public:

//   MaxMatching(Graph& _g, EdgeCap& _edge_cap, NodeCap& _node_cap, 

// 	      EdgeFlow& _edge_flow, NodeFlow& _node_flow) : 

//     MaxFlow(), gw(_g), 

//     cap(_edge_cap, _node_cap), flow(_edge_flow, _node_flow) {

//     Parent::set(gw, cap, flow);

//   }

// };

template <typename Graph, typename EdgeCap, typename NodeCap, 

	  typename EdgeFlow, typename NodeFlow>

class MaxMatching {

protected:

//   EdgeCap* edge_cap;

//   NodeCap* node_cap;

//   EdgeFlow* edge_flow;

//   NodeFlow* node_flow;

  typedef  stGraphWrapper<Graph> stGW;

  stGW stgw;

  typedef typename stGW::template EdgeMapWrapper<EdgeCap, NodeCap> CapMap; 

  CapMap cap;

  NodeFlow* node_flow;

  typedef typename stGW::template EdgeMapWrapper<EdgeFlow, NodeFlow> FlowMap;

  FlowMap flow;

  MaxFlow<stGW, int, CapMap, FlowMap> mf;

  //graph* g;

  //EdgeCap* edge_cap;

  //EdgeFlow* edge_flow;

public:

  MaxMatching(Graph& _g, EdgeCap& _edge_cap, NodeCap& _node_cap, 

	      EdgeFlow& _edge_flow, NodeFlow& _node_flow) : 

    stgw(_g), 

    cap(_edge_cap, _node_cap), 

    node_flow(0), 

    flow(_edge_flow, _node_flow), 

    mf(stgw, stgw.S_NODE, stgw.T_NODE, cap, flow) { }

  MaxMatching(Graph& _g, EdgeCap& _edge_cap, NodeCap& _node_cap, 

	      EdgeFlow& _edge_flow/*, NodeFlow& _node_flow*/) : 

    stgw(_g), 

    cap(_edge_cap, _node_cap), 

    node_flow(new NodeFlow(_g)), 

    flow(_edge_flow, *node_flow), 

    mf(stgw, stgw.S_NODE, stgw.T_NODE, cap, flow) { }

  ~MaxMatching() { if (node_flow) delete node_flow; }

  void run() { mf.run(); } 

  int matchingValue() { return mf.flowValue(); }

};

/**

 * Inicializalja a veletlenszamgeneratort.

 * Figyelem, ez nem jo igazi random szamokhoz,

 * erre ne bizzad a titkaidat!

 */

void random_init()

{

	unsigned int seed = getpid();

	seed |= seed << 15;

	seed ^= time(0);

	srand(seed);

}

/**

 * Egy veletlen int-et ad vissza 0 es m-1 kozott.

 */

int random(int m)

{

  return int( double(m) * rand() / (RAND_MAX + 1.0) );

}

int main() {

  //typedef UndirListGraph Graph; 

  typedef BipartiteGraph<ListGraph> Graph;

  typedef Graph::Node Node;

  typedef Graph::NodeIt NodeIt;

  typedef Graph::Edge Edge;

  typedef Graph::EdgeIt EdgeIt;

  typedef Graph::OutEdgeIt OutEdgeIt;

  Graph g;

  std::vector<Graph::Node> s_nodes;

  std::vector<Graph::Node> t_nodes;

  int a;

  std::cout << "number of nodes in the first color class=";

  std::cin >> a; 

  int b;

  std::cout << "number of nodes in the second color class=";

  std::cin >> b; 

  int m;

  std::cout << "number of edges=";

  std::cin >> m; 

  std::cout << "Generatig a random bipartite graph..." << std::endl;

  for (int i=0; i<a; ++i) s_nodes.push_back(g.addNode(false));

  for (int i=0; i<b; ++i) t_nodes.push_back(g.addNode(true));

  random_init();

  for(int i=0; i<m; ++i) {

    g.addEdge(s_nodes[random(a)], t_nodes[random(b)]);

  }

//   std::cout << "Edges of the bipartite graph:" << std::endl;

//   FOR_EACH_LOC(EdgeIt, e, g) std::cout << e << " ";

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

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

//   FOR_EACH_LOC(Graph::NodeIt, v, g) std::cout << v << " ";

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

//   std::cout << "Nodes in T:" << std::endl;

//   FOR_EACH_INC_LOC(Graph::ClassNodeIt, v, g, Graph::T_CLASS) std::cout << v << " ";

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

//   std::cout << "Nodes in S:" << std::endl;

//   FOR_EACH_INC_LOC(Graph::ClassNodeIt, v, g, Graph::S_CLASS) std::cout << v << " ";

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

//   std::cout << "Erasing the first node..." << std::endl;

//   NodeIt n;

//   g.first(n);

//   g.erase(n);

//   std::cout << "Nodes of the bipartite graph:" << std::endl;

//   FOR_EACH_GLOB(n, g) std::cout << n << " ";

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

//   std::cout << "Nodes in T:" << std::endl;

//   FOR_EACH_INC_LOC(Graph::ClassNodeIt, v, g, Graph::T_CLASS) std::cout << v << " ";

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

//   std::cout << "Nodes in S:" << std::endl;

//   FOR_EACH_INC_LOC(Graph::ClassNodeIt, v, g, Graph::S_CLASS) std::cout << v << " ";

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

  typedef stGraphWrapper<Graph> stGW;

  stGW stgw(g);

  ConstMap<stGW::Edge, int> const1map(1);

  Timer ts;

  ts.reset();

  stGW::EdgeMap<int> flow(stgw);

  MaxFlow<stGW, int, ConstMap<stGW::Edge, int>, stGW::EdgeMap<int> > 

    max_flow_test(stgw, stgw.S_NODE, stgw.T_NODE, const1map, flow);

  max_flow_test.run();

//  while (max_flow_test.augmentOnShortestPath()) { }

//  typedef ListGraph MutableGraph;

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

//  while (max_flow_test.augmentOnBlockingFlow2()) {

//   std::cout << max_flow_test.flowValue() << std::endl;

//  }

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

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

//   FOR_EACH_LOC(stGW::EdgeIt, e, stgw) { 

//     if (flow[e]) std::cout << e << std::endl; 

//   }

  std::cout << std::endl;

  typedef ConstMap<Graph::Edge, int> EdgeCap; 

  EdgeCap ge1(1);

  typedef ConstMap<Graph::Node, int> NodeCap;

  NodeCap gn1(1);

  typedef Graph::EdgeMap<int> EdgeFlow;

  EdgeFlow gef(g); //0

  typedef Graph::NodeMap<int> NodeFlow; 

  NodeFlow gnf(g); //0 

  typedef stGraphWrapper<Graph>::EdgeMapWrapper<EdgeCap, NodeCap> CapMap; 

  typedef stGraphWrapper<Graph>::EdgeMapWrapper<EdgeFlow, NodeFlow> FlowMap; 

  CapMap cm(ge1, gn1);

  FlowMap fm(gef, gnf);

  //Timer ts;

  ts.reset();

  //stGW::EdgeMap<int> flow(stgw);

  MaxFlow<stGW, int, CapMap, FlowMap> 

    max_flow_test1(stgw, stgw.S_NODE, stgw.T_NODE, cm, fm);

  max_flow_test1.run();

//  while (max_flow_test.augmentOnShortestPath()) { }

//  typedef ListGraph MutableGraph;

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

//  while (max_flow_test.augmentOnBlockingFlow2()) {

//   std::cout << max_flow_test.flowValue() << std::endl;

//  }

  std::cout << "max flow value: " << max_flow_test1.flowValue() << std::endl;

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

//   FOR_EACH_LOC(Graph::EdgeIt, e, g) { 

//     if (gef[e]) std::cout << e << std::endl; 

//   }

  std::cout << std::endl;

  ts.reset();

  FOR_EACH_LOC(Graph::EdgeIt, e, g) gef.set(e, 0); 

  FOR_EACH_LOC(Graph::NodeIt, n, g) gnf.set(n, 0); 

  MaxMatching<Graph, ConstMap<Graph::Edge, int>, ConstMap<Graph::Node, int>, 

    Graph::EdgeMap<int>, Graph::NodeMap<int> > 

    matching_test(g, ge1, gn1, gef, gnf);

  matching_test.run();

  std::cout << "max flow value: " << matching_test.matchingValue() << std::endl;

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

//   FOR_EACH_LOC(Graph::EdgeIt, e, g) { 

//     if (gef[e]) std::cout << e << std::endl; 

//   }

  std::cout << std::endl;

  ts.reset();

  FOR_EACH_LOC(Graph::EdgeIt, e, g) gef.set(e, 0); 

  //FOR_EACH_LOC(Graph::NodeIt, n, g) gnf.set(n, 0); 

  MaxMatching<Graph, ConstMap<Graph::Edge, int>, ConstMap<Graph::Node, int>, 

    Graph::EdgeMap<int>, Graph::NodeMap<int> > 

    matching_test_1(g, ge1, gn1, gef/*, gnf*/);

  matching_test_1.run();

  std::cout << "max flow value: " << matching_test_1.matchingValue() << std::endl;

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

//   FOR_EACH_LOC(Graph::EdgeIt, e, g) { 

//     if (gef[e]) std::cout << e << std::endl; 

//   }

  std::cout << std::endl;

  return 0;

}