diff -r ee5959aa4410 -r c280de819a73 src/work/marci/experiment/edmonds_karp.h
--- a/src/work/marci/experiment/edmonds_karp.h	Sun Apr 17 18:57:22 2005 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,1238 +0,0 @@
-// -*- c++ -*-
-#ifndef LEMON_EDMONDS_KARP_H
-#define LEMON_EDMONDS_KARP_H
-
-#include <algorithm>
-#include <list>
-#include <iterator>
-
-#include <bfs_iterator.h>
-#include <invalid.h>
-
-namespace lemon {
-
-  template<typename Graph, typename Number, typename FlowMap, typename CapacityMap>
-  class ResGraph {
-  public:
-    typedef typename Graph::Node Node;
-    typedef typename Graph::NodeIt NodeIt;
-  private:
-    typedef typename Graph::SymEdgeIt OldSymEdgeIt;
-    const Graph& G;
-    FlowMap& flow;
-    const CapacityMap& capacity;
-  public:
-    ResGraph(const Graph& _G, FlowMap& _flow, 
-	     const CapacityMap& _capacity) : 
-      G(_G), flow(_flow), capacity(_capacity) { }
-
-    class Edge; 
-    class OutEdgeIt; 
-    friend class Edge; 
-    friend class OutEdgeIt; 
-
-    class Edge {
-      friend class ResGraph<Graph, Number, FlowMap, CapacityMap>;
-    protected:
-      const ResGraph<Graph, Number, FlowMap, CapacityMap>* resG;
-      OldSymEdgeIt sym;
-    public:
-      Edge() { } 
-      //Edge(const Edge& e) : resG(e.resG), sym(e.sym) { }
-      Number free() const { 
-	if (resG->G.aNode(sym)==resG->G.source(sym)) { 
-	  return (resG->capacity.get(sym)-resG->flow.get(sym)); 
-	} else { 
-	  return (resG->flow.get(sym)); 
-	}
-      }
-      bool valid() const { return sym.valid(); }
-      void augment(Number a) const {
-	if (resG->G.aNode(sym)==resG->G.source(sym)) { 
-	  resG->flow.set(sym, resG->flow.get(sym)+a);
-	  //resG->flow[sym]+=a;
-	} else { 
-	  resG->flow.set(sym, resG->flow.get(sym)-a);
-	  //resG->flow[sym]-=a;
-	}
-      }
-    };
-
-    class OutEdgeIt : public Edge {
-      friend class ResGraph<Graph, Number, FlowMap, CapacityMap>;
-    public:
-      OutEdgeIt() { }
-      //OutEdgeIt(const OutEdgeIt& e) { resG=e.resG; sym=e.sym; }
-    private:
-      OutEdgeIt(const ResGraph<Graph, Number, FlowMap, CapacityMap>& _resG, Node v) { 
-      	resG=&_resG;
-	sym=resG->G.template first<OldSymEdgeIt>(v);
-	while( sym.valid() && !(free()>0) ) { ++sym; }
-      }
-    public:
-      OutEdgeIt& operator++() { 
-	++sym; 
-	while( sym.valid() && !(free()>0) ) { ++sym; }
-	return *this; 
-      }
-    };
-
-    void /*getF*/first(OutEdgeIt& e, Node v) const { 
-      e=OutEdgeIt(*this, v); 
-    }
-    void /*getF*/first(NodeIt& v) const { G./*getF*/first(v); }
-    
-    template< typename It >
-    It first() const { 
-      It e;      
-      /*getF*/first(e);
-      return e; 
-    }
-
-    template< typename It >
-    It first(Node v) const { 
-      It e;
-      /*getF*/first(e, v);
-      return e; 
-    }
-
-    Node source(Edge e) const { return G.aNode(e.sym); }
-    Node target(Edge e) const { return G.bNode(e.sym); }
-
-    Node aNode(OutEdgeIt e) const { return G.aNode(e.sym); }
-    Node bNode(OutEdgeIt e) const { return G.bNode(e.sym); }
-
-    int id(Node v) const { return G.id(v); }
-
-    template <typename S>
-    class NodeMap {
-      typename Graph::NodeMap<S> node_map; 
-    public:
-      NodeMap(const ResGraph<Graph, Number, FlowMap, CapacityMap>& _G) : node_map(_G.G) { }
-      NodeMap(const ResGraph<Graph, Number, FlowMap, CapacityMap>& _G, S a) : node_map(_G.G, a) { }
-      void set(Node nit, S a) { node_map.set(nit, a); }
-      S get(Node nit) const { return node_map.get(nit); }
-      S& operator[](Node nit) { return node_map[nit]; } 
-      const S& operator[](Node nit) const { return node_map[nit]; } 
-    };
-
-  };
-
-
-  template<typename Graph, typename Number, typename FlowMap, typename CapacityMap>
-  class ResGraph2 {
-  public:
-    typedef typename Graph::Node Node;
-    typedef typename Graph::NodeIt NodeIt;
-  private:
-    //typedef typename Graph::SymEdgeIt OldSymEdgeIt;
-    typedef typename Graph::OutEdgeIt OldOutEdgeIt;
-    typedef typename Graph::InEdgeIt OldInEdgeIt;
-    
-    const Graph& G;
-    FlowMap& flow;
-    const CapacityMap& capacity;
-  public:
-    ResGraph2(const Graph& _G, FlowMap& _flow, 
-	     const CapacityMap& _capacity) : 
-      G(_G), flow(_flow), capacity(_capacity) { }
-
-    class Edge; 
-    class OutEdgeIt; 
-    friend class Edge; 
-    friend class OutEdgeIt; 
-
-    class Edge {
-      friend class ResGraph2<Graph, Number, FlowMap, CapacityMap>;
-    protected:
-      const ResGraph2<Graph, Number, FlowMap, CapacityMap>* resG;
-      //OldSymEdgeIt sym;
-      OldOutEdgeIt out;
-      OldInEdgeIt in;
-      bool out_or_in; //true, iff out
-    public:
-      Edge() : out_or_in(true) { } 
-      Number free() const { 
-	if (out_or_in) { 
-	  return (resG->capacity.get(out)-resG->flow.get(out)); 
-	} else { 
-	  return (resG->flow.get(in)); 
-	}
-      }
-      bool valid() const { 
-	return out_or_in && out.valid() || in.valid(); }
-      void augment(Number a) const {
-	if (out_or_in) { 
-	  resG->flow.set(out, resG->flow.get(out)+a);
-	} else { 
-	  resG->flow.set(in, resG->flow.get(in)-a);
-	}
-      }
-    };
-
-    class OutEdgeIt : public Edge {
-      friend class ResGraph2<Graph, Number, FlowMap, CapacityMap>;
-    public:
-      OutEdgeIt() { }
-    private:
-      OutEdgeIt(const ResGraph2<Graph, Number, FlowMap, CapacityMap>& _resG, Node v) { 
-      	resG=&_resG;
-	out=resG->G.template first<OldOutEdgeIt>(v);
-	while( out.valid() && !(free()>0) ) { ++out; }
-	if (!out.valid()) {
-	  out_or_in=0;
-	  in=resG->G.template first<OldInEdgeIt>(v);
-	  while( in.valid() && !(free()>0) ) { ++in; }
-	}
-      }
-    public:
-      OutEdgeIt& operator++() { 
-	if (out_or_in) {
-	  Node v=resG->G.aNode(out);
-	  ++out;
-	  while( out.valid() && !(free()>0) ) { ++out; }
-	  if (!out.valid()) {
-	    out_or_in=0;
-	    in=resG->G.template first<OldInEdgeIt>(v);
-	    while( in.valid() && !(free()>0) ) { ++in; }
-	  }
-	} else {
-	  ++in;
-	  while( in.valid() && !(free()>0) ) { ++in; } 
-	}
-	return *this; 
-      }
-    };
-
-    void /*getF*/first(OutEdgeIt& e, Node v) const { 
-      e=OutEdgeIt(*this, v); 
-    }
-    void /*getF*/first(NodeIt& v) const { G./*getF*/first(v); }
-    
-    template< typename It >
-    It first() const { 
-      It e;
-      /*getF*/first(e);
-      return e; 
-    }
-
-    template< typename It >
-    It first(Node v) const { 
-      It e;
-      /*getF*/first(e, v);
-      return e; 
-    }
-
-    Node source(Edge e) const { 
-      return ((e.out_or_in) ? G.aNode(e.out) : G.aNode(e.in)); }
-    Node target(Edge e) const { 
-      return ((e.out_or_in) ? G.bNode(e.out) : G.bNode(e.in)); }
-
-    Node aNode(OutEdgeIt e) const { 
-      return ((e.out_or_in) ? G.aNode(e.out) : G.aNode(e.in)); }
-    Node bNode(OutEdgeIt e) const { 
-      return ((e.out_or_in) ? G.bNode(e.out) : G.bNode(e.in)); }
-
-    int id(Node v) const { return G.id(v); }
-
-    template <typename S>
-    class NodeMap {
-      typename Graph::NodeMap<S> node_map; 
-    public:
-      NodeMap(const ResGraph2<Graph, Number, FlowMap, CapacityMap>& _G) : node_map(_G.G) { }
-      NodeMap(const ResGraph2<Graph, Number, FlowMap, CapacityMap>& _G, S a) : node_map(_G.G, a) { }
-      void set(Node nit, S a) { node_map.set(nit, a); }
-      S get(Node nit) const { return node_map.get(nit); }
-    };
-  };
-
-
-  template <typename GraphWrapper, typename Number, typename FlowMap, typename CapacityMap>
-  class MaxFlow {
-  protected:
-    typedef GraphWrapper GW;
-    typedef typename GW::Node Node;
-    typedef typename GW::Edge Edge;
-    typedef typename GW::EdgeIt EdgeIt;
-    typedef typename GW::OutEdgeIt OutEdgeIt;
-    typedef typename GW::InEdgeIt InEdgeIt;
-    //const Graph* G;
-    GW gw;
-    Node s;
-    Node t;
-    FlowMap* flow;
-    const CapacityMap* capacity;
-    typedef ResGraphWrapper<GW, Number, FlowMap, CapacityMap > ResGW;
-    typedef typename ResGW::OutEdgeIt ResGWOutEdgeIt;
-    typedef typename ResGW::Edge ResGWEdge;
-  public:
-
-    MaxFlow(const GW& _gw, Node _s, Node _t, FlowMap& _flow, const CapacityMap& _capacity) : 
-      gw(_gw), s(_s), t(_t), flow(&_flow), capacity(&_capacity) { }
-
-    bool augmentOnShortestPath() {
-      ResGW res_graph(gw, *flow, *capacity);
-      bool _augment=false;
-      
-      typedef typename ResGW::NodeMap<bool> ReachedMap;
-      BfsIterator5< ResGW, ReachedMap > bfs(res_graph);
-      bfs.pushAndSetReached(s);
-	
-      typename ResGW::NodeMap<ResGWEdge> pred(res_graph); 
-      pred.set(s, INVALID);
-      
-      typename ResGW::NodeMap<Number> free(res_graph);
-	
-      //searching for augmenting path
-      while ( !bfs.finished() ) { 
-	ResGWOutEdgeIt e=bfs;
-	if (res_graph.valid(e) && bfs.isBNodeNewlyReached()) {
-	  Node v=res_graph.source(e);
-	  Node w=res_graph.target(e);
-	  pred.set(w, e);
-	  if (res_graph.valid(pred.get(v))) {
-	    free.set(w, std::min(free.get(v), res_graph.resCap(e)));
-	  } else {
-	    free.set(w, res_graph.resCap(e)); 
-	  }
-	  if (res_graph.target(e)==t) { _augment=true; break; }
-	}
-	
-	++bfs;
-      } //end of searching augmenting path
-
-      if (_augment) {
-	Node n=t;
-	Number augment_value=free.get(t);
-	while (res_graph.valid(pred.get(n))) { 
-	  ResGWEdge e=pred.get(n);
-	  res_graph.augment(e, augment_value); 
-	  n=res_graph.source(e);
-	}
-      }
-
-      return _augment;
-    }
-
-    template<typename MapGraphWrapper> 
-    class DistanceMap {
-    protected:
-      MapGraphWrapper gw;
-      typename MapGraphWrapper::NodeMap<int> dist; 
-    public:
-      DistanceMap(MapGraphWrapper& _gw) : gw(_gw), dist(_gw, _gw.nodeNum()) { }
-      void set(const typename MapGraphWrapper::Node& n, int a) { dist[n]=a; }
-      int get(const typename MapGraphWrapper::Node& n) const { return dist[n]; }
-      bool get(const typename MapGraphWrapper::Edge& e) const { 
-	return (dist.get(gw.source(e))<dist.get(gw.target(e))); 
-      }
-    };
-
-    template<typename MutableGraph> bool augmentOnBlockingFlow() {      
-      typedef MutableGraph MG;
-      bool _augment=false;
-
-      ResGW res_graph(gw, *flow, *capacity);
-
-      typedef typename ResGW::NodeMap<bool> ReachedMap;
-      BfsIterator5< ResGW, ReachedMap > bfs(res_graph);
-
-      bfs.pushAndSetReached(s);
-      //typename ResGW::NodeMap<int> dist(res_graph); //filled up with 0's
-      DistanceMap<ResGW> dist(res_graph);
-      while ( !bfs.finished() ) { 
-	ResGWOutEdgeIt e=bfs;
-	if (res_graph.valid(e) && bfs.isBNodeNewlyReached()) {
-	  dist.set(res_graph.target(e), dist.get(res_graph.source(e))+1);
-	}
-	++bfs;
-      } //computing distances from s in the residual graph
-
-      MG F;
-      typedef SubGraphWrapper<ResGW, DistanceMap<ResGW> > FilterResGW;
-      FilterResGW filter_res_graph(res_graph, dist);
-      typename ResGW::NodeMap<typename MG::Node> res_graph_to_F(res_graph);
-      {
-	typename ResGW::NodeIt n;
-	for(res_graph.first(n); res_graph.valid(n); res_graph.next(n)) {
-	  res_graph_to_F.set(n, F.addNode());
-	}
-      }
-
-      typename MG::Node sF=res_graph_to_F.get(s);
-      typename MG::Node tF=res_graph_to_F.get(t);
-      typename MG::EdgeMap<ResGWEdge> original_edge(F);
-      typename MG::EdgeMap<Number> residual_capacity(F);
-
-      //Making F to the graph containing the edges of the residual graph 
-      //which are in some shortest paths
-      {
-	typename FilterResGW::EdgeIt e;
-	for(filter_res_graph.first(e); filter_res_graph.valid(e); filter_res_graph.next(e)) {
-	  //if (dist.get(res_graph.target(e))==dist.get(res_graph.source(e))+1) {
-	  typename MG::Edge f=F.addEdge(res_graph_to_F.get(res_graph.source(e)), res_graph_to_F.get(res_graph.target(e)));
-	  original_edge.update();
-	  original_edge.set(f, e);
-	  residual_capacity.update();
-	  residual_capacity.set(f, res_graph.resCap(e));
-	  //} 
-	}
-      }
-
-      bool __augment=true;
-
-      while (__augment) {
-	__augment=false;
-	//computing blocking flow with dfs
-	typedef typename TrivGraphWrapper<MG>::NodeMap<bool> BlockingReachedMap;
-	DfsIterator5< TrivGraphWrapper<MG>, BlockingReachedMap > dfs(F);
-	typename MG::NodeMap<typename MG::Edge> pred(F);
-	pred.set(sF, INVALID);
-	//invalid iterators for sources
-
-	typename MG::NodeMap<Number> free(F);
-
-	dfs.pushAndSetReached(sF);      
-	while (!dfs.finished()) {
-	  ++dfs;
-	  if (F.valid(/*typename MG::OutEdgeIt*/(dfs))) {
-	    if (dfs.isBNodeNewlyReached()) {
-	      typename MG::Node v=F.aNode(dfs);
-	      typename MG::Node w=F.bNode(dfs);
-	      pred.set(w, dfs);
-	      if (F.valid(pred.get(v))) {
-		free.set(w, std::min(free.get(v), residual_capacity.get(dfs)));
-	      } else {
-		free.set(w, residual_capacity.get(dfs)); 
-	      }
-	      if (w==tF) { 
-		__augment=true; 
-		_augment=true;
-		break; 
-	      }
-	      
-	    } else {
-	      F.erase(/*typename MG::OutEdgeIt*/(dfs));
-	    }
-	  } 
-	}
-
-	if (__augment) {
-	  typename MG::Node n=tF;
-	  Number augment_value=free.get(tF);
-	  while (F.valid(pred.get(n))) { 
-	    typename MG::Edge e=pred.get(n);
-	    res_graph.augment(original_edge.get(e), augment_value); 
-	    n=F.source(e);
-	    if (residual_capacity.get(e)==augment_value) 
-	      F.erase(e); 
-	    else 
-	      residual_capacity.set(e, residual_capacity.get(e)-augment_value);
-	  }
-	}
-	
-      }
-            
-      return _augment;
-    }
-
-    template<typename MutableGraph> bool augmentOnBlockingFlow1() {      
-      typedef MutableGraph MG;
-      bool _augment=false;
-
-      ResGW res_graph(gw, *flow, *capacity);
-
-      //bfs for distances on the residual graph
-      typedef typename ResGW::NodeMap<bool> ReachedMap;
-      BfsIterator5< ResGW, ReachedMap > bfs(res_graph);
-      bfs.pushAndSetReached(s);
-      typename ResGW::NodeMap<int> dist(res_graph); //filled up with 0's
-
-      //F will contain the physical copy of the residual graph
-      //with the set of edges which are on shortest paths
-      MG F;
-      typename ResGW::NodeMap<typename MG::Node> res_graph_to_F(res_graph);
-      {
-	typename ResGW::NodeIt n;
-	for(res_graph.first(n); res_graph.valid(n); res_graph.next(n)) {
-	  res_graph_to_F.set(n, F.addNode());
-	}
-      }
-
-      typename MG::Node sF=res_graph_to_F.get(s);
-      typename MG::Node tF=res_graph_to_F.get(t);
-      typename MG::EdgeMap<ResGWEdge> original_edge(F);
-      typename MG::EdgeMap<Number> residual_capacity(F);
-
-      while ( !bfs.finished() ) { 
-	ResGWOutEdgeIt e=bfs;
-	if (res_graph.valid(e)) {
-	  if (bfs.isBNodeNewlyReached()) {
-	    dist.set(res_graph.target(e), dist.get(res_graph.source(e))+1);
-	    typename MG::Edge f=F.addEdge(res_graph_to_F.get(res_graph.source(e)), res_graph_to_F.get(res_graph.target(e)));
-	    original_edge.update();
-	    original_edge.set(f, e);
-	    residual_capacity.update();
-	    residual_capacity.set(f, res_graph.resCap(e));
-	  } else {
-	    if (dist.get(res_graph.target(e))==(dist.get(res_graph.source(e))+1)) {
-	      typename MG::Edge f=F.addEdge(res_graph_to_F.get(res_graph.source(e)), res_graph_to_F.get(res_graph.target(e)));
-	      original_edge.update();
-	      original_edge.set(f, e);
-	      residual_capacity.update();
-	      residual_capacity.set(f, res_graph.resCap(e));
-	    }
-	  }
-	}
-	++bfs;
-      } //computing distances from s in the residual graph
-
-      bool __augment=true;
-
-      while (__augment) {
-	__augment=false;
-	//computing blocking flow with dfs
-	typedef typename TrivGraphWrapper<MG>::NodeMap<bool> BlockingReachedMap;
-	DfsIterator5< TrivGraphWrapper<MG>, BlockingReachedMap > dfs(F);
-	typename MG::NodeMap<typename MG::Edge> pred(F);
-	pred.set(sF, INVALID);
-	//invalid iterators for sources
-
-	typename MG::NodeMap<Number> free(F);
-
-	dfs.pushAndSetReached(sF);      
-	while (!dfs.finished()) {
-	  ++dfs;
-	  if (F.valid(/*typename MG::OutEdgeIt*/(dfs))) {
-	    if (dfs.isBNodeNewlyReached()) {
-	      typename MG::Node v=F.aNode(dfs);
-	      typename MG::Node w=F.bNode(dfs);
-	      pred.set(w, dfs);
-	      if (F.valid(pred.get(v))) {
-		free.set(w, std::min(free.get(v), residual_capacity.get(dfs)));
-	      } else {
-		free.set(w, residual_capacity.get(dfs)); 
-	      }
-	      if (w==tF) { 
-		__augment=true; 
-		_augment=true;
-		break; 
-	      }
-	      
-	    } else {
-	      F.erase(/*typename MG::OutEdgeIt*/(dfs));
-	    }
-	  } 
-	}
-
-	if (__augment) {
-	  typename MG::Node n=tF;
-	  Number augment_value=free.get(tF);
-	  while (F.valid(pred.get(n))) { 
-	    typename MG::Edge e=pred.get(n);
-	    res_graph.augment(original_edge.get(e), augment_value); 
-	    n=F.source(e);
-	    if (residual_capacity.get(e)==augment_value) 
-	      F.erase(e); 
-	    else 
-	      residual_capacity.set(e, residual_capacity.get(e)-augment_value);
-	  }
-	}
-	
-      }
-            
-      return _augment;
-    }
-
-    bool augmentOnBlockingFlow2() {
-      bool _augment=false;
-
-      ResGW res_graph(gw, *flow, *capacity);
-
-      typedef typename ResGW::NodeMap<bool> ReachedMap;
-      BfsIterator5< ResGW, ReachedMap > bfs(res_graph);
-
-      bfs.pushAndSetReached(s);
-      DistanceMap<ResGW> dist(res_graph);
-      while ( !bfs.finished() ) { 
- 	ResGWOutEdgeIt e=bfs;
- 	if (res_graph.valid(e) && bfs.isBNodeNewlyReached()) {
- 	  dist.set(res_graph.target(e), dist.get(res_graph.source(e))+1);
- 	}
-	++bfs;
-      } //computing distances from s in the residual graph
-
-      //Subgraph containing the edges on some shortest paths
-      typedef SubGraphWrapper<ResGW, DistanceMap<ResGW> > FilterResGW;
-      FilterResGW filter_res_graph(res_graph, dist);
-
-      //Subgraph, which is able to delete edges which are already 
-      //met by the dfs
-      typename FilterResGW::NodeMap<typename FilterResGW::OutEdgeIt> 
- 	first_out_edges(filter_res_graph);
-      typename FilterResGW::NodeIt v;
-      for(filter_res_graph.first(v); filter_res_graph.valid(v); 
- 	  filter_res_graph.next(v)) 
-      {
- 	typename FilterResGW::OutEdgeIt e;
- 	filter_res_graph.first(e, v);
- 	first_out_edges.set(v, e);
-      }
-      typedef ErasingFirstGraphWrapper<FilterResGW, typename FilterResGW::
-	NodeMap<typename FilterResGW::OutEdgeIt> > ErasingResGW;
-      ErasingResGW erasing_res_graph(filter_res_graph, first_out_edges);
-
-      bool __augment=true;
-
-      while (__augment) {
-
- 	__augment=false;
- 	//computing blocking flow with dfs
-	typedef typename ErasingResGW::NodeMap<bool> BlockingReachedMap;
- 	DfsIterator5< ErasingResGW, BlockingReachedMap > 
- 	  dfs(erasing_res_graph);
- 	typename ErasingResGW::NodeMap<typename ErasingResGW::OutEdgeIt> 
- 	  pred(erasing_res_graph); 
- 	pred.set(s, INVALID);
- 	//invalid iterators for sources
-
- 	typename ErasingResGW::NodeMap<Number> free(erasing_res_graph);
-
- 	dfs.pushAndSetReached(s);
- 	while (!dfs.finished()) {
- 	  ++dfs;
- 	  if (erasing_res_graph.valid(
- 		/*typename ErasingResGW::OutEdgeIt*/(dfs))) 
- 	  { 
- 	    if (dfs.isBNodeNewlyReached()) {
-	  
- 	      typename ErasingResGW::Node v=erasing_res_graph.aNode(dfs);
- 	      typename ErasingResGW::Node w=erasing_res_graph.bNode(dfs);
-
- 	      pred.set(w, /*typename ErasingResGW::OutEdgeIt*/(dfs));
- 	      if (erasing_res_graph.valid(pred.get(v))) {
- 		free.set(w, std::min(free.get(v), res_graph.resCap(dfs)));
- 	      } else {
- 		free.set(w, res_graph.resCap(dfs)); 
- 	      }
-	      
- 	      if (w==t) { 
- 		__augment=true; 
- 		_augment=true;
- 		break; 
- 	      }
-	    } else {
-	      erasing_res_graph.erase(dfs);
-	    }
-	  }
-	}	
-
- 	if (__augment) {
- 	  typename ErasingResGW::Node n=t;
- 	  Number augment_value=free.get(n);
- 	  while (erasing_res_graph.valid(pred.get(n))) { 
- 	    typename ErasingResGW::OutEdgeIt e=pred.get(n);
- 	    res_graph.augment(e, augment_value);
- 	    n=erasing_res_graph.source(e);
- 	    if (res_graph.resCap(e)==0)
- 	      erasing_res_graph.erase(e);
- 	  }
- 	}
-      
-      } //while (__augment) 
-            
-      return _augment;
-    }
-
-//     bool augmentOnBlockingFlow2() {
-//       bool _augment=false;
-
-//       //typedef ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap> EAugGraph;
-//       typedef FilterGraphWrapper< ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap> > EAugGraph;
-//       typedef typename EAugGraph::OutEdgeIt EAugOutEdgeIt;
-//       typedef typename EAugGraph::Edge EAugEdge;
-
-//       EAugGraph res_graph(*G, *flow, *capacity);
-
-//       //typedef typename EAugGraph::NodeMap<bool> ReachedMap;
-//       BfsIterator5< 
-// 	ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap>, 
-// 	/*typename ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap>::OutEdgeIt,*/ 
-// 	ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap>::NodeMap<bool> > bfs(res_graph);
-      
-//       bfs.pushAndSetReached(s);
-
-//       typename ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap>::
-// 	NodeMap<int>& dist=res_graph.dist;
-
-//       while ( !bfs.finished() ) {
-// 	typename ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap>::OutEdgeIt e=bfs;
-// 	if (res_graph.valid(e) && bfs.isBNodeNewlyReached()) {
-// 	  dist.set(res_graph.target(e), dist.get(res_graph.source(e))+1);
-// 	}
-// 	++bfs;	
-//       } //computing distances from s in the residual graph
-
-//       bool __augment=true;
-
-//       while (__augment) {
-
-// 	__augment=false;
-// 	//computing blocking flow with dfs
-// 	typedef typename EAugGraph::NodeMap<bool> BlockingReachedMap;
-// 	DfsIterator5< EAugGraph/*, EAugOutEdgeIt*/, BlockingReachedMap > 
-// 	  dfs(res_graph);
-// 	typename EAugGraph::NodeMap<EAugEdge> pred(res_graph); 
-// 	pred.set(s, EAugEdge(INVALID));
-// 	//invalid iterators for sources
-
-// 	typename EAugGraph::NodeMap<Number> free(res_graph);
-
-// 	dfs.pushAndSetReached(s);
-// 	while (!dfs.finished()) {
-// 	  ++dfs;
-// 	  if (res_graph.valid(EAugOutEdgeIt(dfs))) { 
-// 	    if (dfs.isBNodeNewlyReached()) {
-	  
-// 	      typename EAugGraph::Node v=res_graph.aNode(dfs);
-// 	      typename EAugGraph::Node w=res_graph.bNode(dfs);
-
-// 	      pred.set(w, EAugOutEdgeIt(dfs));
-// 	      if (res_graph.valid(pred.get(v))) {
-// 		free.set(w, std::min(free.get(v), res_graph.free(dfs)));
-// 	      } else {
-// 		free.set(w, res_graph.free(dfs)); 
-// 	      }
-	      
-// 	      if (w==t) { 
-// 		__augment=true; 
-// 		_augment=true;
-// 		break; 
-// 	      }
-// 	    } else {
-// 	      res_graph.erase(dfs);
-// 	    }
-// 	  } 
-
-// 	}
-
-// 	if (__augment) {
-// 	  typename EAugGraph::Node n=t;
-// 	  Number augment_value=free.get(t);
-// 	  while (res_graph.valid(pred.get(n))) { 
-// 	    EAugEdge e=pred.get(n);
-// 	    res_graph.augment(e, augment_value);
-// 	    n=res_graph.source(e);
-// 	    if (res_graph.free(e)==0)
-// 	      res_graph.erase(e);
-// 	  }
-// 	}
-      
-//       }
-            
-//       return _augment;
-//     }
-
-    void run() {
-      //int num_of_augmentations=0;
-      while (augmentOnShortestPath()) { 
-	//while (augmentOnBlockingFlow<MutableGraph>()) { 
-	//std::cout << ++num_of_augmentations << " ";
-	//std::cout<<std::endl;
-      } 
-    }
-
-    template<typename MutableGraph> void run() {
-      //int num_of_augmentations=0;
-      //while (augmentOnShortestPath()) { 
-	while (augmentOnBlockingFlow<MutableGraph>()) { 
-	//std::cout << ++num_of_augmentations << " ";
-	//std::cout<<std::endl;
-      } 
-    }
-
-    Number flowValue() { 
-      Number a=0;
-      OutEdgeIt e;
-      for(gw.first(e, s); gw.valid(e); gw.next(e)) {
-	a+=flow->get(e);
-      }
-      return a;
-    }
-
-  };
-
-
-//   template <typename Graph, typename Number, typename FlowMap, typename CapacityMap>
-//   class MaxMatching {
-//   public:
-//     typedef typename Graph::Node Node;
-//     typedef typename Graph::NodeIt NodeIt;
-//     typedef typename Graph::Edge Edge;
-//     typedef typename Graph::EdgeIt EdgeIt;
-//     typedef typename Graph::OutEdgeIt OutEdgeIt;
-//     typedef typename Graph::InEdgeIt InEdgeIt;
-
-//     typedef typename Graph::NodeMap<bool> SMap;
-//     typedef typename Graph::NodeMap<bool> TMap;
-//   private:
-//     const Graph* G;
-//     SMap* S;
-//     TMap* T;
-//     //Node s;
-//     //Node t;
-//     FlowMap* flow;
-//     const CapacityMap* capacity;
-//     typedef ResGraphWrapper<Graph, Number, FlowMap, CapacityMap > AugGraph;
-//     typedef typename AugGraph::OutEdgeIt AugOutEdgeIt;
-//     typedef typename AugGraph::Edge AugEdge;
-//     typename Graph::NodeMap<int> used; //0
-
-//   public:
-//     MaxMatching(const Graph& _G, SMap& _S, TMap& _T, FlowMap& _flow, const CapacityMap& _capacity) : 
-//       G(&_G), S(&_S), T(&_T), flow(&_flow), capacity(&_capacity), used(_G) { }
-//     bool augmentOnShortestPath() {
-//       AugGraph res_graph(*G, *flow, *capacity);
-//       bool _augment=false;
-      
-//       typedef typename AugGraph::NodeMap<bool> ReachedMap;
-//       BfsIterator5< AugGraph, /*AugOutEdgeIt,*/ ReachedMap > bfs(res_graph);
-//       typename AugGraph::NodeMap<AugEdge> pred(res_graph); 
-//       for(NodeIt s=G->template first<NodeIt>(); G->valid(s); G->next(s)) {
-// 	if ((S->get(s)) && (used.get(s)<1) ) {
-// 	  //Number u=0;
-// 	  //for(OutEdgeIt e=G->template first<OutEdgeIt>(s); G->valid(e); G->next(e))
-// 	  //u+=flow->get(e);
-// 	  //if (u<1) {
-// 	    bfs.pushAndSetReached(s);
-// 	    pred.set(s, AugEdge(INVALID));
-// 	    //}
-// 	}
-//       }
-      
-//       typename AugGraph::NodeMap<Number> free(res_graph);
-	
-//       Node n;
-//       //searching for augmenting path
-//       while ( !bfs.finished() ) { 
-// 	AugOutEdgeIt e=bfs;
-// 	if (res_graph.valid(e) && bfs.isBNodeNewlyReached()) {
-// 	  Node v=res_graph.source(e);
-// 	  Node w=res_graph.target(e);
-// 	  pred.set(w, e);
-// 	  if (res_graph.valid(pred.get(v))) {
-// 	    free.set(w, std::min(free.get(v), res_graph.free(e)));
-// 	  } else {
-// 	    free.set(w, res_graph.free(e)); 
-// 	  }
-// 	  n=res_graph.target(e);
-// 	  if (T->get(n) && (used.get(n)<1) ) { 
-// 	    //Number u=0;
-// 	    //for(InEdgeIt f=G->template first<InEdgeIt>(n); G->valid(f); G->next(f))
-// 	    //u+=flow->get(f);
-// 	    //if (u<1) {
-// 	      _augment=true; 
-// 	      break; 
-// 	      //}
-// 	  }
-// 	}
-	
-// 	++bfs;
-//       } //end of searching augmenting path
-
-//       if (_augment) {
-// 	//Node n=t;
-// 	used.set(n, 1); //mind2 vegen jav
-// 	Number augment_value=free.get(n);
-// 	while (res_graph.valid(pred.get(n))) { 
-// 	  AugEdge e=pred.get(n);
-// 	  res_graph.augment(e, augment_value); 
-// 	  n=res_graph.source(e);
-// 	}
-// 	used.set(n, 1); //mind2 vegen jav
-//       }
-
-//       return _augment;
-//     }
-
-// //     template<typename MutableGraph> bool augmentOnBlockingFlow() {      
-// //       bool _augment=false;
-
-// //       AugGraph res_graph(*G, *flow, *capacity);
-
-// //       typedef typename AugGraph::NodeMap<bool> ReachedMap;
-// //       BfsIterator4< AugGraph, AugOutEdgeIt, ReachedMap > bfs(res_graph);
-
-
-
-
-
-// //       //typename AugGraph::NodeMap<AugEdge> pred(res_graph); 
-// //       for(NodeIt s=G->template first<NodeIt>(); G->valid(s); G->next(s)) {
-// // 	if (S->get(s)) {
-// // 	  Number u=0;
-// // 	  for(OutEdgeIt e=G->template first<OutEdgeIt>(s); G->valid(e); G->next(e))
-// // 	    u+=flow->get(e);
-// // 	  if (u<1) {
-// // 	    bfs.pushAndSetReached(s);
-// // 	    //pred.set(s, AugEdge(INVALID));
-// // 	  }
-// // 	}
-// //       }
-
-
-
-
-// //       //bfs.pushAndSetReached(s);
-// //       typename AugGraph::NodeMap<int> dist(res_graph); //filled up with 0's
-// //       while ( !bfs.finished() ) { 
-// // 	AugOutEdgeIt e=bfs;
-// // 	if (res_graph.valid(e) && bfs.isBNodeNewlyReached()) {
-// // 	  dist.set(res_graph.target(e), dist.get(res_graph.source(e))+1);
-// // 	}
-	
-// // 	++bfs;
-// //       } //computing distances from s in the residual graph
-
-// //       MutableGraph F;
-// //       typename AugGraph::NodeMap<typename MutableGraph::Node> 
-// // 	res_graph_to_F(res_graph);
-// //       for(typename AugGraph::NodeIt n=res_graph.template first<typename AugGraph::NodeIt>(); res_graph.valid(n); res_graph.next(n)) {
-// // 	res_graph_to_F.set(n, F.addNode());
-// //       }
-      
-// //       typename MutableGraph::Node sF=res_graph_to_F.get(s);
-// //       typename MutableGraph::Node tF=res_graph_to_F.get(t);
-
-// //       typename MutableGraph::EdgeMap<AugEdge> original_edge(F);
-// //       typename MutableGraph::EdgeMap<Number> residual_capacity(F);
-
-// //       //Making F to the graph containing the edges of the residual graph 
-// //       //which are in some shortest paths
-// //       for(typename AugGraph::EdgeIt e=res_graph.template first<typename AugGraph::EdgeIt>(); res_graph.valid(e); res_graph.next(e)) {
-// // 	if (dist.get(res_graph.target(e))==dist.get(res_graph.source(e))+1) {
-// // 	  typename MutableGraph::Edge f=F.addEdge(res_graph_to_F.get(res_graph.source(e)), res_graph_to_F.get(res_graph.target(e)));
-// // 	  original_edge.update();
-// // 	  original_edge.set(f, e);
-// // 	  residual_capacity.update();
-// // 	  residual_capacity.set(f, res_graph.free(e));
-// // 	} 
-// //       }
-
-// //       bool __augment=true;
-
-// //       while (__augment) {
-// // 	__augment=false;
-// // 	//computing blocking flow with dfs
-// // 	typedef typename MutableGraph::NodeMap<bool> BlockingReachedMap;
-// // 	DfsIterator4< MutableGraph, typename MutableGraph::OutEdgeIt, BlockingReachedMap > dfs(F);
-// // 	typename MutableGraph::NodeMap<typename MutableGraph::Edge> pred(F);
-// // 	pred.set(sF, typename MutableGraph::Edge(INVALID));
-// // 	//invalid iterators for sources
-
-// // 	typename MutableGraph::NodeMap<Number> free(F);
-
-// // 	dfs.pushAndSetReached(sF);      
-// // 	while (!dfs.finished()) {
-// // 	  ++dfs;
-// // 	  if (F.valid(typename MutableGraph::OutEdgeIt(dfs))) {
-// // 	    if (dfs.isBNodeNewlyReached()) {
-// // 	      typename MutableGraph::Node v=F.aNode(dfs);
-// // 	      typename MutableGraph::Node w=F.bNode(dfs);
-// // 	      pred.set(w, dfs);
-// // 	      if (F.valid(pred.get(v))) {
-// // 		free.set(w, std::min(free.get(v), residual_capacity.get(dfs)));
-// // 	      } else {
-// // 		free.set(w, residual_capacity.get(dfs)); 
-// // 	      }
-// // 	      if (w==tF) { 
-// // 		__augment=true; 
-// // 		_augment=true;
-// // 		break; 
-// // 	      }
-	      
-// // 	    } else {
-// // 	      F.erase(typename MutableGraph::OutEdgeIt(dfs));
-// // 	    }
-// // 	  } 
-// // 	}
-
-// // 	if (__augment) {
-// // 	  typename MutableGraph::Node n=tF;
-// // 	  Number augment_value=free.get(tF);
-// // 	  while (F.valid(pred.get(n))) { 
-// // 	    typename MutableGraph::Edge e=pred.get(n);
-// // 	    res_graph.augment(original_edge.get(e), augment_value); 
-// // 	    n=F.source(e);
-// // 	    if (residual_capacity.get(e)==augment_value) 
-// // 	      F.erase(e); 
-// // 	    else 
-// // 	      residual_capacity.set(e, residual_capacity.get(e)-augment_value);
-// // 	  }
-// // 	}
-	
-// //       }
-            
-// //       return _augment;
-// //     }
-//     bool augmentOnBlockingFlow2() {
-//       bool _augment=false;
-
-//       //typedef ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap> EAugGraph;
-//       typedef FilterGraphWrapper< ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap> > EAugGraph;
-//       typedef typename EAugGraph::OutEdgeIt EAugOutEdgeIt;
-//       typedef typename EAugGraph::Edge EAugEdge;
-
-//       EAugGraph res_graph(*G, *flow, *capacity);
-
-//       //typedef typename EAugGraph::NodeMap<bool> ReachedMap;
-//       BfsIterator5< 
-// 	ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap>, 
-// 	/*typename ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap>::OutEdgeIt,*/ 
-// 	ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap>::NodeMap<bool> > bfs(res_graph);
-
-
-//       //typename AugGraph::NodeMap<AugEdge> pred(res_graph); 
-//       for(NodeIt s=G->template first<NodeIt>(); G->valid(s); G->next(s)) {
-// 	if (S->get(s)) {
-// 	  Number u=0;
-// 	  for(OutEdgeIt e=G->template first<OutEdgeIt>(s); G->valid(e); G->next(e))
-// 	    u+=flow->get(e);
-// 	  if (u<1) {
-// 	    bfs.pushAndSetReached(s);
-// 	    //pred.set(s, AugEdge(INVALID));
-// 	  }
-// 	}
-//       }
-
-      
-//       //bfs.pushAndSetReached(s);
-
-//       typename ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap>::
-// 	NodeMap<int>& dist=res_graph.dist;
-
-//       while ( !bfs.finished() ) {
-// 	typename ErasingResGraphWrapper<Graph, Number, FlowMap, CapacityMap>::OutEdgeIt e=bfs;
-// 	if (res_graph.valid(e) && bfs.isBNodeNewlyReached()) {
-// 	  dist.set(res_graph.target(e), dist.get(res_graph.source(e))+1);
-// 	}
-// 	++bfs;	
-//       } //computing distances from s in the residual graph
-
-//       bool __augment=true;
-
-//       while (__augment) {
-
-// 	__augment=false;
-// 	//computing blocking flow with dfs
-// 	typedef typename EAugGraph::NodeMap<bool> BlockingReachedMap;
-// 	DfsIterator5< EAugGraph/*, EAugOutEdgeIt*/, BlockingReachedMap > 
-// 	  dfs(res_graph);
-// 	typename EAugGraph::NodeMap<EAugEdge> pred(res_graph, INVALID); 
-// 	//pred.set(s, EAugEdge(INVALID));
-// 	//invalid iterators for sources
-
-// 	typename EAugGraph::NodeMap<Number> free(res_graph);
-
-
-// 	//typename AugGraph::NodeMap<AugEdge> pred(res_graph); 
-//       for(NodeIt s=G->template first<NodeIt>(); G->valid(s); G->next(s)) {
-// 	if (S->get(s)) {
-// 	  Number u=0;
-// 	  for(OutEdgeIt e=G->template first<OutEdgeIt>(s); G->valid(e); G->next(e))
-// 	    u+=flow->get(e);
-// 	  if (u<1) {
-// 	    dfs.pushAndSetReached(s);
-// 	    //pred.set(s, AugEdge(INVALID));
-// 	  }
-// 	}
-//       }
-
-
-
-//       //dfs.pushAndSetReached(s);
-//       typename EAugGraph::Node n;
-// 	while (!dfs.finished()) {
-// 	  ++dfs;
-// 	  if (res_graph.valid(EAugOutEdgeIt(dfs))) { 
-// 	    if (dfs.isBNodeNewlyReached()) {
-	  
-// 	      typename EAugGraph::Node v=res_graph.aNode(dfs);
-// 	      typename EAugGraph::Node w=res_graph.bNode(dfs);
-
-// 	      pred.set(w, EAugOutEdgeIt(dfs));
-// 	      if (res_graph.valid(pred.get(v))) {
-// 		free.set(w, std::min(free.get(v), res_graph.free(dfs)));
-// 	      } else {
-// 		free.set(w, res_graph.free(dfs)); 
-// 	      }
-	     
-// 	      n=w;
-// 	      if (T->get(w)) {
-// 		Number u=0;
-// 		for(InEdgeIt f=G->template first<InEdgeIt>(n); G->valid(f); G->next(f))
-// 		  u+=flow->get(f);
-// 		if (u<1) {
-// 		  __augment=true; 
-// 		  _augment=true;
-// 		  break; 
-// 		}
-// 	      }
-// 	    } else {
-// 	      res_graph.erase(dfs);
-// 	    }
-// 	  } 
-
-// 	}
-
-// 	if (__augment) {
-// 	  // typename EAugGraph::Node n=t;
-// 	  Number augment_value=free.get(n);
-// 	  while (res_graph.valid(pred.get(n))) { 
-// 	    EAugEdge e=pred.get(n);
-// 	    res_graph.augment(e, augment_value);
-// 	    n=res_graph.source(e);
-// 	    if (res_graph.free(e)==0)
-// 	      res_graph.erase(e);
-// 	  }
-// 	}
-      
-//       }
-            
-//       return _augment;
-//     }
-//     void run() {
-//       //int num_of_augmentations=0;
-//       while (augmentOnShortestPath()) { 
-// 	//while (augmentOnBlockingFlow<MutableGraph>()) { 
-// 	//std::cout << ++num_of_augmentations << " ";
-// 	//std::cout<<std::endl;
-//       } 
-//     }
-// //     template<typename MutableGraph> void run() {
-// //       //int num_of_augmentations=0;
-// //       //while (augmentOnShortestPath()) { 
-// // 	while (augmentOnBlockingFlow<MutableGraph>()) { 
-// // 	//std::cout << ++num_of_augmentations << " ";
-// // 	//std::cout<<std::endl;
-// //       } 
-// //     } 
-//     Number flowValue() { 
-//       Number a=0;
-//       EdgeIt e;
-//       for(G->/*getF*/first(e); G->valid(e); G->next(e)) {
-// 	a+=flow->get(e);
-//       }
-//       return a;
-//     }
-//   };
-
-
-
-
-
-  
-// //   template <typename Graph, typename Number, typename FlowMap, typename CapacityMap>
-// //   class MaxFlow2 {
-// //   public:
-// //     typedef typename Graph::Node Node;
-// //     typedef typename Graph::Edge Edge;
-// //     typedef typename Graph::EdgeIt EdgeIt;
-// //     typedef typename Graph::OutEdgeIt OutEdgeIt;
-// //     typedef typename Graph::InEdgeIt InEdgeIt;
-// //   private:
-// //     const Graph& G;
-// //     std::list<Node>& S;
-// //     std::list<Node>& T;
-// //     FlowMap& flow;
-// //     const CapacityMap& capacity;
-// //     typedef ResGraphWrapper<Graph, Number, FlowMap, CapacityMap > AugGraph;
-// //     typedef typename AugGraph::OutEdgeIt AugOutEdgeIt;
-// //     typedef typename AugGraph::Edge AugEdge;
-// //     typename Graph::NodeMap<bool> SMap;
-// //     typename Graph::NodeMap<bool> TMap;
-// //   public:
-// //     MaxFlow2(const Graph& _G, std::list<Node>& _S, std::list<Node>& _T, FlowMap& _flow, const CapacityMap& _capacity) : G(_G), S(_S), T(_T), flow(_flow), capacity(_capacity), SMap(_G), TMap(_G) { 
-// //       for(typename std::list<Node>::const_iterator i=S.begin(); 
-// // 	  i!=S.end(); ++i) { 
-// // 	SMap.set(*i, true); 
-// //       }
-// //       for (typename std::list<Node>::const_iterator i=T.begin(); 
-// // 	   i!=T.end(); ++i) { 
-// // 	TMap.set(*i, true); 
-// //       }
-// //     }
-// //     bool augment() {
-// //       AugGraph res_graph(G, flow, capacity);
-// //       bool _augment=false;
-// //       Node reached_t_node;
-      
-// //       typedef typename AugGraph::NodeMap<bool> ReachedMap;
-// //       BfsIterator4< AugGraph, AugOutEdgeIt, ReachedMap > bfs(res_graph);
-// //       for(typename std::list<Node>::const_iterator i=S.begin(); 
-// // 	  i!=S.end(); ++i) {
-// // 	bfs.pushAndSetReached(*i);
-// //       }
-// //       //bfs.pushAndSetReached(s);
-	
-// //       typename AugGraph::NodeMap<AugEdge> pred(res_graph); 
-// //       //filled up with invalid iterators
-      
-// //       typename AugGraph::NodeMap<Number> free(res_graph);
-	
-// //       //searching for augmenting path
-// //       while ( !bfs.finished() ) { 
-// // 	AugOutEdgeIt e=/*AugOutEdgeIt*/(bfs);
-// // 	if (e.valid() && bfs.isBNodeNewlyReached()) {
-// // 	  Node v=res_graph.source(e);
-// // 	  Node w=res_graph.target(e);
-// // 	  pred.set(w, e);
-// // 	  if (pred.get(v).valid()) {
-// // 	    free.set(w, std::min(free.get(v), e.free()));
-// // 	  } else {
-// // 	    free.set(w, e.free()); 
-// // 	  }
-// // 	  if (TMap.get(res_graph.target(e))) { 
-// // 	    _augment=true; 
-// // 	    reached_t_node=res_graph.target(e);
-// // 	    break; 
-// // 	  }
-// // 	}
-	
-// // 	++bfs;
-// //       } //end of searching augmenting path
-
-// //       if (_augment) {
-// // 	Node n=reached_t_node;
-// // 	Number augment_value=free.get(reached_t_node);
-// // 	while (pred.get(n).valid()) { 
-// // 	  AugEdge e=pred.get(n);
-// // 	  e.augment(augment_value); 
-// // 	  n=res_graph.source(e);
-// // 	}
-// //       }
-
-// //       return _augment;
-// //     }
-// //     void run() {
-// //       while (augment()) { } 
-// //     }
-// //     Number flowValue() { 
-// //       Number a=0;
-// //       for(typename std::list<Node>::const_iterator i=S.begin(); 
-// // 	  i!=S.end(); ++i) { 
-// // 	for(OutEdgeIt e=G.template first<OutEdgeIt>(*i); e.valid(); ++e) {
-// // 	  a+=flow.get(e);
-// // 	}
-// // 	for(InEdgeIt e=G.template first<InEdgeIt>(*i); e.valid(); ++e) {
-// // 	  a-=flow.get(e);
-// // 	}
-// //       }
-// //       return a;
-// //     }
-// //   };
-
-
-} // namespace lemon
-
-#endif //LEMON_EDMONDS_KARP_H