lemon/pr_bipartite_matching.h
changeset 2499 c97596611d59
parent 2463 19651a04d056
child 2512 371cf309fc3c
equal deleted inserted replaced
1:7bf855d7ba46 2:63942ea43538
    57     Elevator<Graph,typename Graph::BNode> _levels;
    57     Elevator<Graph,typename Graph::BNode> _levels;
    58     typename Graph::template BNodeMap<int> _cov;
    58     typename Graph::template BNodeMap<int> _cov;
    59 
    59 
    60   public:
    60   public:
    61 
    61 
       
    62     /// Constructor
       
    63 
       
    64     /// Constructor
       
    65     ///
    62     PrBipartiteMatching(const Graph &g) :
    66     PrBipartiteMatching(const Graph &g) :
    63       _g(g),
    67       _g(g),
    64       _node_num(countBNodes(g)),
    68       _node_num(countBNodes(g)),
    65       _matching(g),
    69       _matching(g),
    66       _levels(g,_node_num),
    70       _levels(g,_node_num),
   193 
   197 
   194 	if(_levels.onLevel(actlevel)==0)
   198 	if(_levels.onLevel(actlevel)==0)
   195 	  _levels.liftToTop(actlevel);
   199 	  _levels.liftToTop(actlevel);
   196       }
   200       }
   197       
   201       
   198       _matching_size = _node_num;
   202       for(ANodeIt n(_g);n!=INVALID;++n) {
   199       for(ANodeIt n(_g);n!=INVALID;++n)
   203 	if (_matching[n]==INVALID)continue;
   200 	if(_matching[n]==INVALID) _matching_size--;
   204 	if (_cov[_g.bNode(_matching[n])]>1) {
   201 	else if (_cov[_g.bNode(_matching[n])]>1) {
       
   202 	  _cov[_g.bNode(_matching[n])]--;
   205 	  _cov[_g.bNode(_matching[n])]--;
   203 	  _matching_size--;
       
   204 	  _matching[n]=INVALID;
   206 	  _matching[n]=INVALID;
   205 	}
   207 	} else {
       
   208 	  ++_matching_size;
       
   209 	}
       
   210       }
   206     }
   211     }
   207 
   212 
   208     ///Start the algorithm to find a perfect matching
   213     ///Start the algorithm to find a perfect matching
   209 
   214 
   210     ///This function is close to identical to the simple start()
   215     ///This function is close to identical to the simple start()
   259 
   264 
   260 	if(_levels.onLevel(actlevel)==0)
   265 	if(_levels.onLevel(actlevel)==0)
   261 	  _empty_level=actlevel;
   266 	  _empty_level=actlevel;
   262 	  return false;
   267 	  return false;
   263       }
   268       }
       
   269       _matching_size = _node_num;
   264       return true;
   270       return true;
   265     }
   271     }
   266   
   272   
   267     ///Runs the algorithm
   273     ///Runs the algorithm
   268     
   274