Hello, Applying the suggestion below:

struct Node { std::string name; long index; boost::default_color_type color; long distance; graph_traits<Graph>::edge_descriptor predecessor; };

struct Arc { long capacity; long residual; graph_traits<Graph>::edge_descriptor rev; };

With the following call:

flow = kolmogorov_max_flow(g, s, t, capacity_map(get(&Arc::capacity, g)). residual_capacity_map(get(&Arc::residual, g)). reverse_edge_map(get(&Arc::rev, g)). predecessor_map(get(&Node::predecessor, g)). color_map(get(&Node::color, g)). distance_map(get(&Node::distance, g)). vertex_index_map(get(&Node::index, g)) );

Resulted with many errors.But I think I found the right way. The following

code compiles without errors or warnings: ----------------CODE---------------------------- #include <boost/config.hpp> #include <iostream> #include <string> #include <boost/graph/kolmogorov_max_flow.hpp> #include <boost/graph/adjacency_list.hpp> #include <boost/graph/write_dimacs.hpp> #include <boost/graph/read_dimacs.hpp> using namespace boost; struct Arc; struct Node; typedef adjacency_list<vecS,vecS,directedS,Node,Arc> Graph; struct Arc { long capacity; long residual_capacity; Graph::edge_descriptor reverse; }; struct Node { std::string name; Graph::edge_descriptor predecessor; default_color_type color; long distance; long index; }; int main() { typedef Graph::vertex_descriptor vertex_descriptor; typedef Graph::edge_descriptor edge_descriptor; typedef std::pair<edge_descriptor, bool> EdgePair; typedef std::pair<int,int> Pair; Graph g; property_map<Graph, long Arc::*>::type capacity = get(&Arc::capacity, g); property_map<Graph, long Arc::*>::type res_capacity = get(&Arc::residual_capacity, g); property_map<Graph, Graph::edge_descriptor Arc::*>::type reverse = get(&Arc::reverse,g); property_map<Graph,Graph::edge_descriptor Node::*>::type predecessor = get(&Node::predecessor,g); property_map<Graph,default_color_type Node::*>::type color = get(&Node::color,g); property_map<Graph,long Node::*>::type distance = get(&Node::distance,g); property_map<Graph,long Node::*>::type index = get(&Node::index,g); long flow; vertex_descriptor s, t; Pair edge_array[6] = { Pair(0,1), Pair(0,2), Pair(0,3), Pair(2,4), Pair(1,3), Pair(4,3), }; EdgePair edge_desc_obj; EdgePair edge_from_first=add_edge(edge_array[0].first,edge_array[0].second,g); g[edge_from_first.first].capacity=1; for (int i = 1; i < 5; ++i){ edge_desc_obj=add_edge(edge_array[i].first, edge_array[i].second,g); g[edge_desc_obj.first].capacity=i+1; } EdgePair edge_to_last=add_edge(edge_array[5].first,edge_array[5].second,g); g[edge_to_last.first].capacity=4; char str[2]; int i=0; vertex_descriptor v1=*vertices(g).first,v2=*vertices(g).second; while (v1!=v2) { sprintf(str,"%d",i); g[v1].name=str; v1++; i++; } edge_descriptor from_s,to_t; from_s=edge_from_first.first; to_t=edge_to_last.first; s=source(from_s,g); t=target(to_t,g); flow = kolmogorov_max_flow(g,capacity,res_capacity,reverse,predecessor,color,distance,index,s,t); return 0; } -----------------------------END OFCODE----------------- However when trying to run this code I receive "Segmentation error". (this error does not appear when I remove the call to kolmogorov) I work under linux and I tried to compile with both g++ and g++-3.3 The valgrind output can be found at: http://www.cs.huji.ac.il/~lweizm45/valgring_output.txt Any suggestions? Lior