[Lemon-commits] [lemon_svn] alpar: r1065 - in hugo/branches/hugo++/src: demo hugo work work/marci work/marci/leda work/marci/lp

Lemon SVN svn at lemon.cs.elte.hu
Mon Nov 6 20:43:03 CET 2006


Author: alpar
Date: Mon Aug 30 13:17:15 2004
New Revision: 1065

Added:
   hugo/branches/hugo++/src/demo/
      - copied from r1064, /hugo/trunk/src/demo/
   hugo/branches/hugo++/src/work/marci/bipartite_matching_demo.cc
      - copied unchanged from r1064, /hugo/trunk/src/work/marci/bipartite_matching_demo.cc
   hugo/branches/hugo++/src/work/marci/graph_wrapper_time.cc
      - copied unchanged from r1064, /hugo/trunk/src/work/marci/graph_wrapper_time.cc
   hugo/branches/hugo++/src/work/marci/leda/bipartite_matching_comparison.cc
      - copied unchanged from r1064, /hugo/trunk/src/work/marci/leda/bipartite_matching_comparison.cc
   hugo/branches/hugo++/src/work/marci/leda/max_bipartite_matching_demo.cc
      - copied unchanged from r1064, /hugo/trunk/src/work/marci/leda/max_bipartite_matching_demo.cc
Removed:
   hugo/branches/hugo++/src/work/marci/bipartite_matching_try.cc
   hugo/branches/hugo++/src/work/marci/bipartite_matching_try_3.cc
   hugo/branches/hugo++/src/work/marci/leda/comparison.cc
   hugo/branches/hugo++/src/work/marci/max_bipartite_matching_demo.cc
Modified:
   hugo/branches/hugo++/src/hugo/max_flow.h
   hugo/branches/hugo++/src/work/makefile
   hugo/branches/hugo++/src/work/marci/bipartite_graph_wrapper.h
   hugo/branches/hugo++/src/work/marci/bipartite_graph_wrapper_test.cc
   hugo/branches/hugo++/src/work/marci/leda/bipartite_matching_leda.cc
   hugo/branches/hugo++/src/work/marci/leda/bipartite_matching_leda_gen.cc
   hugo/branches/hugo++/src/work/marci/leda/makefile
   hugo/branches/hugo++/src/work/marci/lp/lp_solver_wrapper.h
   hugo/branches/hugo++/src/work/marci/makefile
   hugo/branches/hugo++/src/work/marci/max_bipartite_matching.h

Log:
branches/hugo++: ported -r1029:1064 from trunk.


Modified: hugo/branches/hugo++/src/hugo/max_flow.h
==============================================================================
--- hugo/branches/hugo++/src/hugo/max_flow.h	(original)
+++ hugo/branches/hugo++/src/hugo/max_flow.h	Mon Aug 30 13:17:15 2004
@@ -792,14 +792,15 @@
 	  
 	  //putting the active nodes into the stack
 	  int lev=level[w];
-	  if ( exc > 0 && lev < n && w != t ) 
+	    if ( exc > 0 && lev < n && Node(w) != t ) 
+	      ///\bug	    if ( exc > 0 && lev < n && w != t ) temporarily for working with wrappers. 
 	    {
 	      next.set(w,first[lev]);
 	      first[lev]=w;
 	    }
 	}
 	break;
-      }
+      } //switch
     } //preflowPreproc
 
 
@@ -808,7 +809,7 @@
 		 NNMap& right, int& b, int& k, bool what_heur )
     {
 
-      Num lev=level[w];
+      int lev=level[w];
 
       Node right_n=right[w];
       Node left_n=left[w];

Modified: hugo/branches/hugo++/src/work/makefile
==============================================================================
--- hugo/branches/hugo++/src/work/makefile	(original)
+++ hugo/branches/hugo++/src/work/makefile	Mon Aug 30 13:17:15 2004
@@ -1,5 +1,5 @@
 INCLUDEDIRS ?= -I.. -I. -I./{marci,jacint,alpar,klao,akos}
-CXXFLAGS = -g -O2 -W -Wall $(INCLUDEDIRS) -ansi -pedantic
+CXXFLAGS = -g -O3 -W -Wall $(INCLUDEDIRS) -ansi -pedantic
 
 BINARIES ?= bin_heap_demo
 

Modified: hugo/branches/hugo++/src/work/marci/bipartite_graph_wrapper.h
==============================================================================
--- hugo/branches/hugo++/src/work/marci/bipartite_graph_wrapper.h	(original)
+++ hugo/branches/hugo++/src/work/marci/bipartite_graph_wrapper.h	Mon Aug 30 13:17:15 2004
@@ -30,9 +30,10 @@
   /// \author Marton Makai
   template<typename Graph> 
   class BipartiteGraphWrapper : public GraphWrapper<Graph> {
-  protected:
+  public:
     typedef IterableBoolMap< typename Graph::template NodeMap<int> > 
     SFalseTTrueMap;
+  protected:
     SFalseTTrueMap* s_false_t_true_map;
 
     BipartiteGraphWrapper() : GraphWrapper<Graph>()/*, 
@@ -46,6 +47,12 @@
     //FIXME vhogy igy kellene, csak az en forditom nem eszi meg
     static const bool S_CLASS;
     static const bool T_CLASS;
+
+    /// This method is to reach the iterable maps of the bipartite graph or 
+    /// bipartite graph wrapper.
+    const SFalseTTrueMap& sFalseTTrueMap() const { 
+      return *s_false_t_true_map; 
+    }
     
     //bool S_CLASS;
     //bool T_CLASS;
@@ -211,13 +218,13 @@
   /// does not work well.
   template<typename Graph>
   class BipartiteGraph : public BipartiteGraphWrapper<Graph> {
-    typedef IterableBoolMap< typename Graph::template NodeMap<int> > 
-    SFalseTTrueMap;
+//     typedef IterableBoolMap< typename Graph::template NodeMap<int> > 
+//     SFalseTTrueMap;
     typedef BipartiteGraphWrapper<Graph> Parent;
   protected:
     Graph gr;
     typename Graph::template NodeMap<int> bipartite_map;
-    SFalseTTrueMap s_false_t_true_map;
+    typename Parent::SFalseTTrueMap s_false_t_true_map;
   public:
     typedef typename Parent::Node Node;
     typedef typename Parent::Edge Edge;
@@ -258,9 +265,20 @@
     }
   };
 
+  template<typename Graph, typename sIterableMap, typename tIterableMap>
+  class stGraphWrapper;
 
+  /// Easier stuff for bipartite graphs.
   template<typename Graph>
-  class stGraphWrapper;
+  class stBipartiteGraphWrapper : public 
+  stGraphWrapper<Graph, typename Graph::SFalseTTrueMap, 
+		 typename Graph::SFalseTTrueMap> {
+  public:
+    typedef stGraphWrapper<Graph, typename Graph::SFalseTTrueMap, 
+			   typename Graph::SFalseTTrueMap> Parent;
+    stBipartiteGraphWrapper(Graph& _graph) : 
+      Parent(_graph, _graph.sFalseTTrueMap(), _graph.sFalseTTrueMap()) { }
+  };
 
 //   template<typename Graph> 
 //   std::ostream& 
@@ -287,13 +305,16 @@
   /// graph have to be oriented from S to T.
   ///
   /// \author Marton Makai
-  template<typename Graph>
+  template<typename Graph, typename sIterableMap, typename tIterableMap>
   class stGraphWrapper : public GraphWrapper<Graph> {
+  protected:    
+    const sIterableMap* s_iterable_map;
+    const tIterableMap* t_iterable_map;
   public:
     class Node; 
     friend class Node;
 //GN, int
-//0 normalis, 1 s, 2, true, ez az iteralasi sorrend, 
+//0 normalis, 1 s, 2 t, ez az iteralasi sorrend, 
 //es a vege a false azaz (invalid, 3)    
     class NodeIt;
     friend class NodeIt;
@@ -334,9 +355,15 @@
     static const bool S_CLASS=false;
     static const bool T_CLASS=true;
 
-    stGraphWrapper(Graph& _graph) : GraphWrapper<Graph>(_graph) , 
-				    S_NODE(INVALID, 1), 
-				    T_NODE(INVALID, 2) { }
+    // \bug not too nice constructor.
+    stGraphWrapper(Graph& _graph, 
+		   const sIterableMap& _s_iterable_map, 
+		   const tIterableMap& _t_iterable_map) : 
+      GraphWrapper<Graph>(_graph), 
+      s_iterable_map(&_s_iterable_map), 
+      t_iterable_map(&_t_iterable_map), 
+      S_NODE(INVALID, 1), 
+      T_NODE(INVALID, 2) { }
 
     
 //    std::ostream& 
@@ -349,7 +376,7 @@
     class Node : public Graph::Node {
     protected:
       friend class GraphWrapper<Graph>;
-      friend class stGraphWrapper<Graph>;
+      friend class stGraphWrapper<Graph, sIterableMap, tIterableMap>;
       template <typename T> friend class NodeMap;
       friend class Edge;
       friend class OutEdgeIt;
@@ -380,7 +407,7 @@
 
     class NodeIt { 
       friend class GraphWrapper<Graph>;
-      friend class stGraphWrapper<Graph>;
+      friend class stGraphWrapper<Graph, sIterableMap, tIterableMap>;
       typename Graph::NodeIt n;
       int spec; 
      public:
@@ -388,7 +415,8 @@
       NodeIt(const typename Graph::NodeIt& _n, int _spec) : 
 	n(_n), spec(_spec) { }
       NodeIt(const Invalid& i) : n(i), spec(3) { }
-      NodeIt(const stGraphWrapper<Graph>& _G) : n(*(_G.graph)), spec(0) { 
+      NodeIt(const stGraphWrapper<Graph, sIterableMap, tIterableMap>& _G) 
+	: n(*(_G.graph)), spec(0) { 
 	if (!_G.graph->valid(n)) spec=1;
       }
       operator Node() const { return Node(n, spec); }
@@ -396,7 +424,7 @@
 
     class Edge : public Graph::Edge {
       friend class GraphWrapper<Graph>;
-      friend class stGraphWrapper<Graph>;
+      friend class stGraphWrapper<Graph, sIterableMap, tIterableMap>;
       template <typename T> friend class EdgeMap;
       int spec;
       typename Graph::Node n;
@@ -429,7 +457,7 @@
 
     class OutEdgeIt { 
       friend class GraphWrapper<Graph>;
-      friend class stGraphWrapper<Graph>;
+      friend class stGraphWrapper<Graph, sIterableMap, tIterableMap>;
       typename Graph::OutEdgeIt e;
       int spec;
       typename Graph::ClassNodeIt n;
@@ -440,7 +468,8 @@
 	e(_e), spec(_spec), n(_n) { 
       }
       OutEdgeIt(const Invalid& i) : e(i), spec(3), n(i) { }
-      OutEdgeIt(const stGraphWrapper<Graph>& _G, const Node& _n) {
+      OutEdgeIt(const stGraphWrapper<Graph, sIterableMap, tIterableMap>& _G, 
+		const Node& _n) {
 	switch (_n.spec) {
 	  case 0 : 
 	    if (_G.graph->inSClass(_n)) { //S, van normalis kiel 
@@ -473,7 +502,7 @@
 
     class InEdgeIt { 
       friend class GraphWrapper<Graph>;
-      friend class stGraphWrapper<Graph>;
+      friend class stGraphWrapper<Graph, sIterableMap, tIterableMap>;
       typename Graph::InEdgeIt e;
       int spec;
       typename Graph::ClassNodeIt n;
@@ -484,7 +513,8 @@
 	e(_e), spec(_spec), n(_n) { 
       }
       InEdgeIt(const Invalid& i) : e(i), spec(3), n(i) { }
-      InEdgeIt(const stGraphWrapper<Graph>& _G, const Node& _n) {
+      InEdgeIt(const stGraphWrapper<Graph, sIterableMap, tIterableMap>& _G, 
+	       const Node& _n) {
 	switch (_n.spec) {
 	  case 0 : 
 	    if (_G.graph->inTClass(_n)) { //T, van normalis beel 
@@ -517,7 +547,7 @@
 
     class EdgeIt { 
       friend class GraphWrapper<Graph>;
-      friend class stGraphWrapper<Graph>;
+      friend class stGraphWrapper<Graph, sIterableMap, tIterableMap>;
       typename Graph::EdgeIt e;
       int spec;
       typename Graph::ClassNodeIt n;
@@ -527,7 +557,7 @@
 	     const typename Graph::ClassNodeIt& _n) : 
 	e(_e), spec(_spec), n(_n) { }
       EdgeIt(const Invalid& i) : e(i), spec(3), n(i) { }
-      EdgeIt(const stGraphWrapper<Graph>& _G) : 
+      EdgeIt(const stGraphWrapper<Graph, sIterableMap, tIterableMap>& _G) : 
 	e(*(_G.graph)), spec(0), n(INVALID) { 
 	if (!_G.graph->valid(e)) {
 	  spec=1;
@@ -718,12 +748,14 @@
     protected:
       T s_value, t_value;
     public:
-      NodeMap(const stGraphWrapper<Graph>& _G) :  Parent(_G), 
-						  s_value(), 
-						  t_value() { }
-      NodeMap(const stGraphWrapper<Graph>& _G, T a) : Parent(_G, a), 
-						      s_value(a), 
-						      t_value(a) { }
+      NodeMap(const stGraphWrapper<Graph, sIterableMap, tIterableMap>& _G) : 
+	Parent(_G), 
+	s_value(), 
+	t_value() { }
+      NodeMap(const stGraphWrapper<Graph, sIterableMap, tIterableMap>& _G, T a) 
+	: Parent(_G, a), 
+	  s_value(a), 
+	  t_value(a) { }
       T operator[](const Node& n) const { 
 	switch (n.spec) {
 	case 0: 
@@ -753,7 +785,7 @@
 
     /// This class is to wrap a node-map of \c Graph and two variables 
     /// storing values for \c S_NODE and \c T_NODE to a node-map of 
-    /// stGraphWrapper<Graph>.
+    /// stGraphWrapper<Graph, sIterableMap, tIterableMap>.
     template<typename NM> class NodeMapWrapper { 
     public:
       typedef Node KeyType;
@@ -797,10 +829,12 @@
     protected:
       typename GraphWrapper<Graph>::template NodeMap<T> node_value;
     public:
-      EdgeMap(const stGraphWrapper<Graph>& _G) : Parent(_G), 
-						 node_value(_G) { }
-      EdgeMap(const stGraphWrapper<Graph>& _G, T a) : Parent(_G, a), 
-						      node_value(_G, a) { }
+      EdgeMap(const stGraphWrapper<Graph, sIterableMap, tIterableMap>& _G) 
+	: Parent(_G), 
+	  node_value(_G) { }
+      EdgeMap(const stGraphWrapper<Graph, sIterableMap, tIterableMap>& _G, T a) 
+	: Parent(_G, a), 
+	  node_value(_G, a) { }
       T operator[](const Edge& e) const { 
 	switch (e.spec) {
 	case 0: 
@@ -829,7 +863,7 @@
     };
 
     /// This class is to wrap an edge-map and a node-map of \c Graph 
-    /// to an edge-map of stGraphWrapper<Graph>.
+    /// to an edge-map of stGraphWrapper<Graph, sIterableMap, tIterableMap>.
     template<typename EM, typename NM> 
     class EdgeMapWrapper {
     public: 

Modified: hugo/branches/hugo++/src/work/marci/bipartite_graph_wrapper_test.cc
==============================================================================
--- hugo/branches/hugo++/src/work/marci/bipartite_graph_wrapper_test.cc	(original)
+++ hugo/branches/hugo++/src/work/marci/bipartite_graph_wrapper_test.cc	Mon Aug 30 13:17:15 2004
@@ -89,7 +89,7 @@
   BGW::NodeMap<int> dbyj(bgw);
   BGW::EdgeMap<int> dbyxcj(bgw);
 
-  typedef stGraphWrapper<BGW> stGW;
+  typedef stBipartiteGraphWrapper<BGW> stGW;
   stGW stgw(bgw);
   ConstMap<stGW::Edge, int> const1map(1);
   stGW::NodeMap<int> ize(stgw);

Modified: hugo/branches/hugo++/src/work/marci/leda/bipartite_matching_leda.cc
==============================================================================
--- hugo/branches/hugo++/src/work/marci/leda/bipartite_matching_leda.cc	(original)
+++ hugo/branches/hugo++/src/work/marci/leda/bipartite_matching_leda.cc	Mon Aug 30 13:17:15 2004
@@ -14,11 +14,11 @@
 //#include <smart_graph.h>
 //#include <dimacs.h>
 #include <hugo/time_measure.h>
-#include <hugo/for_each_macros.h>
+#include <for_each_macros.h>
 #include <hugo/graph_wrapper.h>
 #include <bipartite_graph_wrapper.h>
 #include <hugo/maps.h>
-#include <max_flow.h>
+#include <hugo/max_flow.h>
 
 /**
  * Inicializalja a veletlenszamgeneratort.
@@ -95,7 +95,7 @@
   BGW::NodeMap<int> dbyj(bgw);
   BGW::EdgeMap<int> dbyxcj(bgw);
 
-  typedef stGraphWrapper<BGW> stGW;
+  typedef stBipartiteGraphWrapper<BGW> stGW;
   stGW stgw(bgw);
   ConstMap<stGW::Edge, int> const1map(1);
 
@@ -109,9 +109,10 @@
 //  while (max_flow_test.augmentOnShortestPath()) { }
   typedef SageGraph MutableGraph;
 //  while (max_flow_test.augmentOnBlockingFlow1<MutableGraph>()) {
-  while (max_flow_test.augmentOnBlockingFlow2()) {
-   std::cout << max_flow_test.flowValue() << std::endl;
-  }
+//   while (max_flow_test.augmentOnBlockingFlow2()) {
+//    std::cout << max_flow_test.flowValue() << std::endl;
+//   }
+  max_flow_test.run();
   std::cout << "max flow value: " << max_flow_test.flowValue() << std::endl;
   std::cout << "elapsed time: " << ts << std::endl;
 

Modified: hugo/branches/hugo++/src/work/marci/leda/bipartite_matching_leda_gen.cc
==============================================================================
--- hugo/branches/hugo++/src/work/marci/leda/bipartite_matching_leda_gen.cc	(original)
+++ hugo/branches/hugo++/src/work/marci/leda/bipartite_matching_leda_gen.cc	Mon Aug 30 13:17:15 2004
@@ -14,11 +14,12 @@
 //#include <smart_graph.h>
 //#include <dimacs.h>
 #include <hugo/time_measure.h>
-#include <hugo/for_each_macros.h>
+#include <for_each_macros.h>
 #include <hugo/graph_wrapper.h>
 #include <bipartite_graph_wrapper.h>
 #include <hugo/maps.h>
-#include <max_flow.h>
+#include <hugo/max_flow.h>
+#include <augmenting_flow.h>
 
 /**
  * Inicializalja a veletlenszamgeneratort.
@@ -97,7 +98,7 @@
 
 
   //st-wrapper
-  typedef stGraphWrapper<BGW> stGW;
+  typedef stBipartiteGraphWrapper<BGW> stGW;
   stGW stgw(bgw);
   ConstMap<stGW::Edge, int> const1map(1);
   stGW::EdgeMap<int> flow(stgw);
@@ -125,10 +126,12 @@
   ts.reset();
   FOR_EACH_LOC(stGW::EdgeIt, e, stgw) flow.set(e, 0);
   typedef SageGraph MutableGraph;
-  while (max_flow_test.augmentOnBlockingFlow<MutableGraph>()) { }
+  AugmentingFlow<stGW, int, ConstMap<stGW::Edge, int>, stGW::EdgeMap<int> > 
+    max_flow_test_1(stgw, stgw.S_NODE, stgw.T_NODE, const1map, flow/*, true*/);
+  while (max_flow_test_1.augmentOnBlockingFlow<MutableGraph>()) { }
   std::cout << "HUGO max matching algorithm based on blocking flow augmentation." 
 	    << std::endl << "Matching size: " 
-	    << max_flow_test.flowValue() << std::endl;
+	    << max_flow_test_1.flowValue() << std::endl;
   std::cout << "elapsed time: " << ts << std::endl;
 
   return 0;

Modified: hugo/branches/hugo++/src/work/marci/leda/makefile
==============================================================================
--- hugo/branches/hugo++/src/work/marci/leda/makefile	(original)
+++ hugo/branches/hugo++/src/work/marci/leda/makefile	Mon Aug 30 13:17:15 2004
@@ -4,7 +4,7 @@
 INCLUDEDIRS ?= -I. -I../.. -I../../{marci,jacint,alpar,klao,akos,athos} -I$(LEDAROOT)/incl -I../../..
 LDFLAGS = -L$(LEDAROOT) -lG -lL -lm
 
-BINARIES = bipartite_matching_leda bipartite_matching_leda_gen comparison
+BINARIES = bipartite_matching_leda bipartite_matching_leda_gen bipartite_matching_comparison
 
 include ../../makefile
 

Modified: hugo/branches/hugo++/src/work/marci/lp/lp_solver_wrapper.h
==============================================================================
--- hugo/branches/hugo++/src/work/marci/lp/lp_solver_wrapper.h	(original)
+++ hugo/branches/hugo++/src/work/marci/lp/lp_solver_wrapper.h	Mon Aug 30 13:17:15 2004
@@ -331,8 +331,8 @@
       lpx_set_col_bnds(lp, col_iter_map[col_it], bound_type, lo, up);
     }
     ///.
-    void setObjCoef(const ColIt& col_it, double obj_coef) { 
-      lpx_set_obj_coef(lp, col_iter_map[col_it], obj_coef);
+    double getObjCoef(const ColIt& col_it) { 
+      return lpx_get_obj_coef(lp, col_iter_map[col_it]);
     }
     ///.
     void setRowBounds(const RowIt& row_it, int bound_type, 

Modified: hugo/branches/hugo++/src/work/marci/makefile
==============================================================================
--- hugo/branches/hugo++/src/work/marci/makefile	(original)
+++ hugo/branches/hugo++/src/work/marci/makefile	Mon Aug 30 13:17:15 2004
@@ -4,7 +4,7 @@
 INCLUDEDIRS ?= -I../{jacint,marci,alpar,klao,akos,athos} -I../.. -I.. -I$(BOOSTROOT)
 
 LEDABINARIES = leda_graph_demo leda_bfs_dfs max_bipartite_matching_demo
-BINARIES = max_flow_demo iterator_bfs_demo macro_test lg_vs_sg_vs_sg bfsit_vs_byhand bipartite_graph_wrapper_test bipartite_matching_try bipartite_matching_try_3 top_sort_test max_flow_1
+BINARIES = graph_wrapper_time max_flow_demo iterator_bfs_demo macro_test lg_vs_sg_vs_sg bfsit_vs_byhand bipartite_graph_wrapper_test bipartite_matching_demo top_sort_test max_flow_1 proba7
 #BINARIES = preflow_bug
 #gw_vs_not preflow_demo_boost edmonds_karp_demo_boost preflow_demo_jacint preflow_demo_athos edmonds_karp_demo_alpar preflow_demo_leda
 

Modified: hugo/branches/hugo++/src/work/marci/max_bipartite_matching.h
==============================================================================
--- hugo/branches/hugo++/src/work/marci/max_bipartite_matching.h	(original)
+++ hugo/branches/hugo++/src/work/marci/max_bipartite_matching.h	Mon Aug 30 13:17:15 2004
@@ -59,18 +59,25 @@
     //   NodeCap* node_cap;
     //   EdgeFlow* edge_flow;
     //   NodeFlow* node_flow;
-    typedef  stGraphWrapper<Graph> stGW;
+    typedef  stBipartiteGraphWrapper<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;
+    typedef MaxFlow<stGW, int, CapMap, FlowMap> MaxFlow;
+    MaxFlow mf;
     //graph* g;
     //EdgeCap* edge_cap;
     //EdgeFlow* edge_flow;
   public:
+    enum MatchingEnum{
+      ZERO_MATCHING,
+      GEN_MATCHING,
+      GEN_MATCHING_WITH_GOOD_NODE_FLOW,
+      NO_MATCHING
+    };
     /// For capacitated b-matchings, edge-caoacities and node-capacities 
     /// have to be given. After running \c run the matching is is given 
     /// back in the edge-map \c _edge_flow and \c _node_map can be used 
@@ -98,9 +105,34 @@
     /// The class have a nontrivial destructor.
     ~MaxBipartiteMatching() { if (node_flow) delete node_flow; }
     /// run computes the max matching.
-    void run() { mf.run(); } 
+    void run(MatchingEnum me=ZERO_MATCHING) { 
+      switch (me) {
+	case ZERO_MATCHING:
+	  mf.run(MaxFlow::ZERO_FLOW);
+	  break;
+	case GEN_MATCHING:
+	{
+	  typename stGW::OutEdgeIt e;
+	  for (stgw.first(e, stgw.S_NODE); stgw.valid(e); stgw.next(e)) 
+	    flow.set(e, cap[e]);
+	}
+	{
+	  typename stGW::InEdgeIt e;
+	  for (stgw.first(e, stgw.T_NODE); stgw.valid(e); stgw.next(e)) 
+	    flow.set(e, 0);
+	}
+	mf.run(MaxFlow::PRE_FLOW);
+	break;
+	case GEN_MATCHING_WITH_GOOD_NODE_FLOW:
+	  mf.run(MaxFlow::GEN_FLOW);
+	  break;
+	case NO_MATCHING:
+	  mf.run(MaxFlow::NO_FLOW);
+	  break;
+      }
+    } 
     /// The matching value after running \c run.
-    int matchingValue() { return mf.flowValue(); }
+    int matchingValue() const { return mf.flowValue(); }
   };
 
 } //namespace hugo



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