# HG changeset patch
# User jacint
# Date 1083835583 0
# Node ID d8863141824dfd3634fd217a4338e623050102cf
# Parent  acd69f60b9c7f7b1f7261a8dff7d61628e7aa2ab


diff -r acd69f60b9c7 -r d8863141824d src/work/jacint/edmonds.cc
--- a/src/work/jacint/edmonds.cc	Wed May 05 17:51:56 2004 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,220 +0,0 @@
-#include <iostream>
-#include <vector>
-#include <string>
-
-#include <list_graph.h>
-#include <edmonds.h>
-
-using namespace hugo;
-
-int main (int, char*[])
-{
-  typedef ListGraph::NodeIt NodeIt;
-  typedef ListGraph::EdgeIt EdgeIt;
-  typedef ListGraph::Node Node;
-  typedef ListGraph::Edge Edge;
-  typedef ListGraph::OutEdgeIt OutEdgeIt;
-  typedef ListGraph::InEdgeIt InEdgeIt;
-  
-  ListGraph flow_test;
- 
-  /*    //Ahuja könyv példája, maxflowvalue=13*/
-  Node s=flow_test.addNode();
-  Node v1=flow_test.addNode();
-  Node v2=flow_test.addNode();
-  Node v3=flow_test.addNode();
-  Node v4=flow_test.addNode();
-  Node v5=flow_test.addNode();
-  Node t=flow_test.addNode();
-  
-  ListGraph::NodeMap<std::string> Node_name(flow_test);
-  Node_name.set(s, "s");
-  Node_name.set(v1, "v1");
-  Node_name.set(v2, "v2");
-  Node_name.set(v3, "v3");
-  Node_name.set(v4, "v4");
-  Node_name.set(v5, "v5");
-  Node_name.set(t, "t");
-
-  Edge s_v1=flow_test.addEdge(s, v1);
-  Edge s_v2=flow_test.addEdge(s, v2);
-  Edge s_v3=flow_test.addEdge(s, v3);
-  Edge v2_v4=flow_test.addEdge(v2, v4);
-  Edge v2_v5=flow_test.addEdge(v2, v5);
-  Edge v3_v5=flow_test.addEdge(v3, v5);
-  Edge v4_t=flow_test.addEdge(v4, t);
-  Edge v5_t=flow_test.addEdge(v5, t);
-  Edge v2_s=flow_test.addEdge(v2, s);
-  
-   ListGraph::EdgeMap<int> cap(flow_test);  
-  cap.set(s_v1, 0);
-  cap.set(s_v2, 10);
-  cap.set(s_v3, 10);
- cap.set(v2_v4, 5);
-  cap.set(v2_v5, 8);
-  cap.set(v3_v5, 5);
-  cap.set(v4_t, 8);
-  cap.set(v5_t, 8);
-  cap.set(v2_s, 0);
-  
-
-  Edmonds<ListGraph> edmonds(flow_test);
-  std::vector<Edge> matching(0);
-  std::cout<<  edmonds.run(matching);
-
-  
-  /*  //Marci példája, maxflowvalue=23
-    Node s=flow_test.addNode();
-  Node v1=flow_test.addNode();
-  Node v2=flow_test.addNode();
-  Node v3=flow_test.addNode();
-  Node v4=flow_test.addNode();
-  Node t=flow_test.addNode();
-  Node z=flow_test.addNode();
-
-  
-   ListGraph::NodeMap<std::string> Node_name(flow_test);
-  Node_name.set(s, "s");
-  Node_name.set(v1, "v1");
-  Node_name.set(v2, "v2");
-  Node_name.set(v3, "v3");
-  Node_name.set(v4, "v4");
-  Node_name.set(t, "t");
-  Node_name.set(z, "z");
-
-  Edge s_v1=flow_test.addEdge(s, v1);
-  Edge s_v2=flow_test.addEdge(s, v2);
-  Edge v1_v2=flow_test.addEdge(v1, v2);
-  Edge v2_v1=flow_test.addEdge(v2, v1);
-  Edge v1_v3=flow_test.addEdge(v1, v3);
-  Edge v3_v2=flow_test.addEdge(v3, v2);
-  Edge v2_v4=flow_test.addEdge(v2, v4);
-  Edge v4_v3=flow_test.addEdge(v4, v3);
-  Edge v3_t=flow_test.addEdge(v3, t);
-  Edge v4_t=flow_test.addEdge(v4, t);
-  Edge v3_v3=flow_test.addEdge(v3, v3);
-  Edge s_z=flow_test.addEdge(s, z);
-  //  Edge v2_s=flow_test.addEdge(v2, s);
-  
-
-
-   ListGraph::EdgeMap<int> cap(flow_test);  
-  cap.set(s_v1, 16);
-  cap.set(s_v2, 13);
-  cap.set(v1_v2, 10);
-  cap.set(v2_v1, 4);
-  cap.set(v1_v3, 12);
-  cap.set(v3_v2, 9);
-  cap.set(v2_v4, 14);
-  cap.set(v4_v3, 7);
-  cap.set(v3_t, 20);
-  cap.set(v4_t, 4);
-  cap.set(v3_v3, 4);
-  cap.set(s_z, 4);
-  //  cap.set(v2_s, 0);
-
-  */
-
-  //pelda 3, maxflowvalue=4
-  /*      Node s=flow_test.addNode();
-  Node v1=flow_test.addNode();
-  Node v2=flow_test.addNode();
-  Node t=flow_test.addNode();
-  Node w=flow_test.addNode();
-  
-  NodeMap<ListGraph, std::string> Node_name(flow_test);
-  Node_name.set(s, "s");
-  Node_name.set(v1, "v1");
-  Node_name.set(v2, "v2");
-  Node_name.set(t, "t");
-  Node_name.set(w, "w");
-
-  Edge s_v1=flow_test.addEdge(s, v1);
-  Edge v1_v2=flow_test.addEdge(v1, v2);
-  Edge v2_t=flow_test.addEdge(v2, t);
-  Edge v1_v1=flow_test.addEdge(v1, v1);
-  Edge s_w=flow_test.addEdge(s, w);
-
-
-  EdgeMap<ListGraph, int> cap(flow_test); 
-    
-  cap.set(s_v1, 16);
-  cap.set(v1_v2, 10);
-  cap.set(v2_t, 4);
-  cap.set(v1_v1, 3);
-  cap.set(s_w, 5);
-  */
-  
-
-
-  /*
-  std::cout << "Testing reverse_bfs..." << std::endl;
-  
-  reverse_bfs<ListGraph> bfs_test(flow_test, t);
-
-  bfs_test.run();
-
-  for (EachNodeIt w=flow_test.first_Node(); w.valid(); ++w) {
-    std::cout <<"The distance of " << w << " is " << bfs_test.dist(w) <<std::endl;
-    }
-
-  */
-
-
-  /*
-  std::cout << "Testing preflow_push_hl..." << std::endl;
-  
-  preflow_push_hl<ListGraph, int> preflow_push_test(flow_test, s, t, cap);
-
-  preflow_push_test.run();
-
-  std::cout << "Maximum flow value is: " << preflow_push_test.maxflow() << "."<<std::endl;
-
-  std::cout<< "The flow on Edge s-v1 is "<< preflow_push_test.flowonEdge(s_v1) << "."<<std::endl;
-
-   ListGraph::EdgeMap<int> flow=preflow_push_test.allflow();  
-  for (EachEdgeIt e=flow_test.template first<EachEdgeIt>(); e.valid(); ++e) {
-    std::cout <<"Flow on Edge " << flow_test.tail(e) <<"-" << flow_test.head(e)<< " is " <<flow.get(e) <<std::endl;
-    }
-
-  std::cout << "A minimum cut: " <<std::endl;  
-   ListGraph::NodeMap<bool> mincut=preflow_push_test.mincut();
-
-  for (EachNodeIt v=flow_test.template first<EachNodeIt>(); v.valid(); ++v) {
-      if (mincut.get(v)) std::cout <<Node_name.get(v)<< " ";
-    }
-  
-  std::cout<<"\n\n"<<std::endl;
-
-
-
-
-  std::cout << "Testing preflow_push_max_flow..." << std::endl;
- 
-  preflow_push_max_flow<ListGraph, int> max_flow_test(flow_test, s, t, cap);
-
-  max_flow_test.run();
-
-  std::cout << "Maximum flow value is: " << max_flow_test.maxflow() << "."<< std::endl;
-
-  std::cout << "A minimum cut: " <<std::endl;  
-   ListGraph::NodeMap<bool> mincut2=max_flow_test.mincut();
-
-  for (EachNodeIt v=flow_test.template first<EachNodeIt>(); v.valid(); ++v) {
-    if (mincut2.get(v)) std::cout <<Node_name.get(v)<< " ";
-  }
-  
-  std::cout << std::endl <<std::endl;
-  */
-
-  return 0;
-}
-
-
-
-
-
-
-
-
-
diff -r acd69f60b9c7 -r d8863141824d src/work/jacint/edmonds.h
--- a/src/work/jacint/edmonds.h	Wed May 05 17:51:56 2004 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,235 +0,0 @@
-// -*- C++ -*-
-/*
-Kell meg a dual oldal
-esetleg az elejen moho matching kereses
-
-  //baj van pos-sal: nem tudok vegigmaszni a halmazok elemein. De
-  //pos-ra nem lenne szukseg ha unionfindban lenne egy element ami
-  //true ha benne van false ha nincs
-
-MISI strukijahoz hasznalok:
-
-void addElement(b,a): b meg nem volt egy osztalyban sem, ezzel hozzaadjuk a osztalyahoz
-void insert(a): a meg nem volt egy osztalyban sem, ezzel egy uj egyelemu osztalyt alkot
-bool element(a): true ha benne van false ha nincs
-void erase(a)
-
-ez a 4 a vegso szetrobbantashoz es egyideju elemfelsorolashoz kell, mas megoldas is jo ehelyett:
-
-bool empty(int i): ures-e az i nevu osztaly
-int find(a)
-void pop(int i): egy fix elso elemet kitorol az i osztalybol
-T top(int i): visszad egy fix elso elemet 
-
-unionfindba kene:
-bool element(a): true ha benne van false ha nincs  (vagy 'bool empty')
-void split(a) (vagy clear)
-T rep(a): visszaadja a halmazanak reprezentanselemet, lehet operator()-val is
-void makeRep(a): a-t a sajat halmazanak reprezentansava teszi
-
-Szoljatok ha nem lehet valamelyiket hatekonyan
-*/
-
-#ifndef HUGO_EDMONDS_H
-#define HUGO_EDMONDS_H
-
-#include <queue>
-
-#include <invalid.h>
-#include <unionfind.h>
-
-namespace hugo {
-
-  template <typename Graph>
-  class Edmonds {
-    
-    typedef typename Graph::Node Node;
-    typedef typename Graph::Edge Edge;
-    typedef typename Graph::EdgeIt EdgeIt;
-    typedef typename Graph::NodeIt NodeIt;
-    typedef typename Graph::OutEdgeIt OutEdgeIt;
-
-    typedef UnionFindEnum<Node, Graph::NodeMap > ufe;
-            
-    const Graph& G;
-
-  public:
-    Edmonds(Graph& _G) : G(_G) {}
-    
-    
-    int run(std::vector<Edge> matching) {
-
-      enum pos_enum{
-	D=0,
-	A=1,
-	C=2
-      };
-      Graph::template NodeMap<pos_enum> pos(G,C);
-
-      int p=0;   //needed for path
-
-      typename Graph::NodeMap<Node> mate(G,INVALID);
-      for ( int i=0; i!=matching.size(); ++i ) {
-	Node u=G.aNode(matching[i]);
-	Node v=G.bNode(matching[i]);
-	mate.set(u,v);
-	mate.set(v,u);
-      }
-      matching.clear();
-
-      typename Graph::NodeMap<Node> ear(G,INVALID);   
-      // a basepontok es a C-beliek earje szemet
-
-      ufe::MapType blossom_base(G);
-      ufe blossom(blossom_base);
-      ufe::MapType tree_base(G);
-      ufe tree(tree_base);
-
-      NodeIt v;
-      for(G.first(v); G.valid(v), G.next(v) ) {
-	
-	if ( pos[v]==C && mate[v]=INVALID ) {
-	  
-	  blossom.insert(v);
-	  tree.insert(v); 
-	  pos.set(v,D);
-
-	  std::queue<Node> Q;   //a vizsgalando csucsok sora
-	  Q.push(v);  
-
-	  while ( !Q.empty() ) {
-	    Node x=Q.top();
-	    Q.pop();
-	    
-	    OutEdgeIt e;
-	    for( G.first(e); G.valid(e), G.next(e) ) {
-	      Node y=G.bNode(e);
-
-	      if ( pos[y]==D ) { 
-
-		if ( tree.find(x) != tree.find(y) ) {  //augment 
-		  augment(x, mate, ear, blossom, tree); 
-		  augment(y, mate, ear, blossom, tree); 
-		  mate.set(x)=y;
-		  mate.set(y)=x;
-		  goto increased;
-		} else 
-		  if ( blossom.find(x) != blossom.find(y) ) {
-
-		    typename Graph::NodeMap<int> path(G,0);
-
-		    ++p;
-		    Node b=blossom.find(x);
-		    path.set(b,p);
-		    while ( b!=INVALID ) {
-		      b=blossom.find(ear[mate[b]]);
-		      path.set(b,p);
-		    }          //going till the root
-	
-		    Node w=y;
-		    Node v=blossom.find(w);
-		    while ( path[v]!=p ) {		      
-		      Q.push(mate[v]);
-		      w=shrink_step(w,v,mate,ear,tree,blossom);
-		      v=blossom.find(w);
-		    }
-		    //now v is the base of the first common ancestor
-
-		    w=x;
-		    Node z=blossom.find(w);
-		    while ( z!=v ) {
-		      Q.push(mate[z]);
-		      w=shrink_step(w,z,mate,ear,tree,blossom);
-		      z=blossom.find(w);
-		    }
-
-		    ear.set(x,y);
-		    ear.set(y,x);
-
-		    blossom.makeRep(v);
-		  }
-	      } else if ( pos[y] == C ) 
-		
-		if ( mate[y]!=INVALID ) {       //grow
-		  ear.set(y,x);
-		  Node w=mate(y);
-		  blossom.insert(w);
-		  tree.insert(w);
-		  tree.join(y,x);  
-		  tree.join(w,x);  
-		  Q.push(w);
-		} else {
-		  augment(x, mate, ear, blossom, tree); 
-		  mate.set(x)=y;
-		  mate.set(y)=x;
-		  goto increased;
-		}
-	    }
-	  }
-	increased:  //Misi, warningol, hogy nincs utasitas!
-	}
-      }
-
-      int s=0;
-      NodeIt v;
-      for(G.first(v); G.valid(v), G.next(v) ) 
-	if ( mate[v]!=INVALID ) ++s;
-	
-      return (int)(s/2);
-
-      //egyelore nem ad semmit vissza
-      
-    }
-  
-
-    void augment(const Node x, typename Graph::NodeMap<Node>& mate, 
-		 typename Graph::NodeMap<Node>& ear, 
-		 ufe& blossom, ufe& tree) { 
-      Node v=mate[x];
-      while ( v!=INVALID ) {
-	Node u=ear[v];
-	mate.set(v,u);
-	Node tmp=v;
-	v=mate[u];
-	mate.set(u,tmp);
-      }
-      //FIXME, blossom szetszed
-      tree.eraseClass(x);
-    }
-
-
-    Node shrink_step(const Node z, const Node v, typename Graph::NodeMap<Node>& mate, 
-		     typename Graph::NodeMap<Node>& ear, 
-		     ufe& blossom, ufe& tree) {  
-      if ( z!=v ) {
-	Node t=z;
-	Node u;
-	while ( t!=v ) {
-	  u=mate[t];
-	  t=ear[u];
-	}
-	ear.set(v,u);
-      }
-
-      Node u=mate[v];
-      Node w=ear[u];
-      tree.erase(u);
-      tree.erase(v);
-      blossom.insert(u);
-      blossom.join(u,w);
-      blossom.join(v,w);
-      ear.set(w,u);      
-
-      return w;
-    }
-
-
-  };
-
-} //namespace hugo
-
-#endif //EDMONDS_H
-
-
-
-