deba@426: /* -*- mode: C++; indent-tabs-mode: nil; -*-
deba@426:  *
deba@426:  * This file is a part of LEMON, a generic C++ optimization library.
deba@426:  *
alpar@1081:  * Copyright (C) 2003-2011
deba@426:  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
deba@426:  * (Egervary Research Group on Combinatorial Optimization, EGRES).
deba@426:  *
deba@426:  * Permission to use, modify and distribute this software is granted
deba@426:  * provided that this copyright notice appears in all copies. For
deba@426:  * precise terms see the accompanying LICENSE file.
deba@426:  *
deba@426:  * This software is provided "AS IS" with no warranty of any kind,
deba@426:  * express or implied, and with no claim as to its suitability for any
deba@426:  * purpose.
deba@426:  *
deba@426:  */
deba@426: 
deba@426: #include <sstream>
deba@426: 
deba@426: #include <lemon/smart_graph.h>
kpeter@643: #include <lemon/adaptors.h>
kpeter@643: #include <lemon/concepts/digraph.h>
kpeter@643: #include <lemon/concepts/maps.h>
kpeter@643: #include <lemon/lgf_reader.h>
deba@426: #include <lemon/hao_orlin.h>
deba@426: 
deba@426: #include "test_tools.h"
deba@426: 
deba@426: using namespace lemon;
deba@426: using namespace std;
deba@426: 
deba@426: const std::string lgf =
deba@426:   "@nodes\n"
deba@426:   "label\n"
deba@426:   "0\n"
deba@426:   "1\n"
deba@426:   "2\n"
deba@426:   "3\n"
deba@426:   "4\n"
deba@426:   "5\n"
deba@426:   "@edges\n"
kpeter@643:   "     cap1 cap2 cap3\n"
kpeter@643:   "0 1  1    1    1   \n"
kpeter@643:   "0 2  2    2    4   \n"
kpeter@643:   "1 2  4    4    4   \n"
kpeter@643:   "3 4  1    1    1   \n"
kpeter@643:   "3 5  2    2    4   \n"
kpeter@643:   "4 5  4    4    4   \n"
kpeter@643:   "5 4  4    4    4   \n"
kpeter@643:   "2 3  1    6    6   \n"
kpeter@643:   "4 0  1    6    6   \n";
kpeter@643: 
kpeter@643: void checkHaoOrlinCompile()
kpeter@643: {
kpeter@643:   typedef int Value;
kpeter@643:   typedef concepts::Digraph Digraph;
kpeter@643: 
kpeter@643:   typedef Digraph::Node Node;
kpeter@643:   typedef Digraph::Arc Arc;
kpeter@643:   typedef concepts::ReadMap<Arc, Value> CapMap;
kpeter@643:   typedef concepts::WriteMap<Node, bool> CutMap;
kpeter@643: 
kpeter@643:   Digraph g;
kpeter@643:   Node n;
kpeter@643:   CapMap cap;
kpeter@643:   CutMap cut;
kpeter@643:   Value v;
kpeter@643: 
kpeter@643:   HaoOrlin<Digraph, CapMap> ho_test(g, cap);
kpeter@643:   const HaoOrlin<Digraph, CapMap>&
kpeter@643:     const_ho_test = ho_test;
kpeter@643: 
kpeter@643:   ho_test.init();
kpeter@643:   ho_test.init(n);
kpeter@643:   ho_test.calculateOut();
kpeter@643:   ho_test.calculateIn();
kpeter@643:   ho_test.run();
kpeter@643:   ho_test.run(n);
kpeter@643: 
kpeter@643:   v = const_ho_test.minCutValue();
kpeter@643:   v = const_ho_test.minCutMap(cut);
kpeter@643: }
kpeter@643: 
kpeter@643: template <typename Graph, typename CapMap, typename CutMap>
alpar@1081: typename CapMap::Value
kpeter@643:   cutValue(const Graph& graph, const CapMap& cap, const CutMap& cut)
kpeter@643: {
kpeter@643:   typename CapMap::Value sum = 0;
kpeter@643:   for (typename Graph::ArcIt a(graph); a != INVALID; ++a) {
kpeter@643:     if (cut[graph.source(a)] && !cut[graph.target(a)])
kpeter@643:       sum += cap[a];
kpeter@643:   }
kpeter@643:   return sum;
kpeter@643: }
deba@426: 
deba@426: int main() {
kpeter@643:   SmartDigraph graph;
kpeter@643:   SmartDigraph::ArcMap<int> cap1(graph), cap2(graph), cap3(graph);
kpeter@643:   SmartDigraph::NodeMap<bool> cut(graph);
deba@426: 
kpeter@643:   istringstream input(lgf);
kpeter@643:   digraphReader(graph, input)
kpeter@643:     .arcMap("cap1", cap1)
kpeter@643:     .arcMap("cap2", cap2)
kpeter@643:     .arcMap("cap3", cap3)
kpeter@643:     .run();
deba@426: 
kpeter@643:   {
kpeter@643:     HaoOrlin<SmartDigraph> ho(graph, cap1);
kpeter@643:     ho.run();
kpeter@643:     ho.minCutMap(cut);
alpar@1081: 
deba@644:     check(ho.minCutValue() == 1, "Wrong cut value");
deba@644:     check(ho.minCutValue() == cutValue(graph, cap1, cut), "Wrong cut value");
kpeter@643:   }
kpeter@643:   {
kpeter@643:     HaoOrlin<SmartDigraph> ho(graph, cap2);
kpeter@643:     ho.run();
kpeter@643:     ho.minCutMap(cut);
deba@644: 
deba@644:     check(ho.minCutValue() == 1, "Wrong cut value");
deba@644:     check(ho.minCutValue() == cutValue(graph, cap2, cut), "Wrong cut value");
kpeter@643:   }
kpeter@643:   {
kpeter@643:     HaoOrlin<SmartDigraph> ho(graph, cap3);
kpeter@643:     ho.run();
kpeter@643:     ho.minCutMap(cut);
alpar@1081: 
deba@644:     check(ho.minCutValue() == 1, "Wrong cut value");
deba@644:     check(ho.minCutValue() == cutValue(graph, cap3, cut), "Wrong cut value");
kpeter@643:   }
alpar@1081: 
kpeter@643:   typedef Undirector<SmartDigraph> UGraph;
kpeter@643:   UGraph ugraph(graph);
alpar@1081: 
kpeter@643:   {
kpeter@643:     HaoOrlin<UGraph, SmartDigraph::ArcMap<int> > ho(ugraph, cap1);
kpeter@643:     ho.run();
kpeter@643:     ho.minCutMap(cut);
alpar@1081: 
deba@644:     check(ho.minCutValue() == 2, "Wrong cut value");
deba@644:     check(ho.minCutValue() == cutValue(ugraph, cap1, cut), "Wrong cut value");
kpeter@643:   }
kpeter@643:   {
kpeter@643:     HaoOrlin<UGraph, SmartDigraph::ArcMap<int> > ho(ugraph, cap2);
kpeter@643:     ho.run();
kpeter@643:     ho.minCutMap(cut);
alpar@1081: 
deba@644:     check(ho.minCutValue() == 5, "Wrong cut value");
deba@644:     check(ho.minCutValue() == cutValue(ugraph, cap2, cut), "Wrong cut value");
kpeter@643:   }
kpeter@643:   {
kpeter@643:     HaoOrlin<UGraph, SmartDigraph::ArcMap<int> > ho(ugraph, cap3);
kpeter@643:     ho.run();
kpeter@643:     ho.minCutMap(cut);
alpar@1081: 
kpeter@643:     check(ho.minCutValue() == 5, "Wrong cut value");
deba@644:     check(ho.minCutValue() == cutValue(ugraph, cap3, cut), "Wrong cut value");
kpeter@643:   }
deba@426: 
deba@426:   return 0;
deba@426: }