/* -*- mode: C++; indent-tabs-mode: nil; -*-

  *

  * This file is a part of LEMON, a generic C++ optimization library.

  *

  * Copyright (C) 2003-2010

  * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport

  * (Egervary Research Group on Combinatorial Optimization, EGRES).

  *

  * Permission to use, modify and distribute this software is granted

  * provided that this copyright notice appears in all copies. For

  * precise terms see the accompanying LICENSE file.

  *

  * This software is provided "AS IS" with no warranty of any kind,

  * express or implied, and with no claim as to its suitability for any

  * purpose.

  *

  */

 #include <sstream>

 #include <lemon/smart_graph.h>

 #include <lemon/adaptors.h>

 #include <lemon/concepts/digraph.h>

 #include <lemon/concepts/maps.h>

 #include <lemon/lgf_reader.h>

 #include <lemon/hao_orlin.h>

 #include "test_tools.h"

 using namespace lemon;

 using namespace std;

 const std::string lgf =

   "@nodes\n"

   "label\n"

   "0\n"

   "1\n"

   "2\n"

   "3\n"

   "4\n"

   "5\n"

   "@edges\n"

   "     cap1 cap2 cap3\n"

   "0 1  1    1    1   \n"

   "0 2  2    2    4   \n"

   "1 2  4    4    4   \n"

   "3 4  1    1    1   \n"

   "3 5  2    2    4   \n"

   "4 5  4    4    4   \n"

   "5 4  4    4    4   \n"

   "2 3  1    6    6   \n"

   "4 0  1    6    6   \n";

 void checkHaoOrlinCompile()

 {

   typedef int Value;

   typedef concepts::Digraph Digraph;

   typedef Digraph::Node Node;

   typedef Digraph::Arc Arc;

   typedef concepts::ReadMap<Arc, Value> CapMap;

   typedef concepts::WriteMap<Node, bool> CutMap;

   Digraph g;

   Node n;

   CapMap cap;

   CutMap cut;

   Value v;

   ::lemon::ignore_unused_variable_warning(v);

   HaoOrlin<Digraph, CapMap> ho_test(g, cap);

   const HaoOrlin<Digraph, CapMap>&

     const_ho_test = ho_test;

   ho_test.init();

   ho_test.init(n);

   ho_test.calculateOut();

   ho_test.calculateIn();

   ho_test.run();

   ho_test.run(n);

   v = const_ho_test.minCutValue();

   v = const_ho_test.minCutMap(cut);

 }

 template <typename Graph, typename CapMap, typename CutMap>

 typename CapMap::Value

   cutValue(const Graph& graph, const CapMap& cap, const CutMap& cut)

 {

   typename CapMap::Value sum = 0;

   for (typename Graph::ArcIt a(graph); a != INVALID; ++a) {

     if (cut[graph.source(a)] && !cut[graph.target(a)])

       sum += cap[a];

   }

   return sum;

 }

 int main() {

   SmartDigraph graph;

   SmartDigraph::ArcMap<int> cap1(graph), cap2(graph), cap3(graph);

   SmartDigraph::NodeMap<bool> cut(graph);

   istringstream input(lgf);

   digraphReader(graph, input)

     .arcMap("cap1", cap1)

     .arcMap("cap2", cap2)

     .arcMap("cap3", cap3)

     .run();

   {

     HaoOrlin<SmartDigraph> ho(graph, cap1);

     ho.run();

     ho.minCutMap(cut);

     check(ho.minCutValue() == 1, "Wrong cut value");

     check(ho.minCutValue() == cutValue(graph, cap1, cut), "Wrong cut value");

   }

   {

     HaoOrlin<SmartDigraph> ho(graph, cap2);

     ho.run();

     ho.minCutMap(cut);

     check(ho.minCutValue() == 1, "Wrong cut value");

     check(ho.minCutValue() == cutValue(graph, cap2, cut), "Wrong cut value");

   }

   {

     HaoOrlin<SmartDigraph> ho(graph, cap3);

     ho.run();

     ho.minCutMap(cut);

     check(ho.minCutValue() == 1, "Wrong cut value");

     check(ho.minCutValue() == cutValue(graph, cap3, cut), "Wrong cut value");

   }

   typedef Undirector<SmartDigraph> UGraph;

   UGraph ugraph(graph);

   {

     HaoOrlin<UGraph, SmartDigraph::ArcMap<int> > ho(ugraph, cap1);

     ho.run();

     ho.minCutMap(cut);

     check(ho.minCutValue() == 2, "Wrong cut value");

     check(ho.minCutValue() == cutValue(ugraph, cap1, cut), "Wrong cut value");

   }

   {

     HaoOrlin<UGraph, SmartDigraph::ArcMap<int> > ho(ugraph, cap2);

     ho.run();

     ho.minCutMap(cut);

     check(ho.minCutValue() == 5, "Wrong cut value");

     check(ho.minCutValue() == cutValue(ugraph, cap2, cut), "Wrong cut value");

   }

   {

     HaoOrlin<UGraph, SmartDigraph::ArcMap<int> > ho(ugraph, cap3);

     ho.run();

     ho.minCutMap(cut);

     check(ho.minCutValue() == 5, "Wrong cut value");

     check(ho.minCutValue() == cutValue(ugraph, cap3, cut), "Wrong cut value");

   }

   return 0;

 }