/* -*- C++ -*-

 *

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

 *

 * Copyright (C) 2003-2007

 * 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 <lemon/list_graph.h>

#include <lemon/hao_orlin.h>

#include <lemon/nagamochi_ibaraki.h>

#include <lemon/time_measure.h>

using namespace lemon;

#include "min_cut_graphs.h"

void testRegUGraph();

void testNoiUGraph();

void testBikeWheelUGraph();

int main() {

  testRegUGraph();

  testNoiUGraph();

  testBikeWheelUGraph();

  return 0;

}

//#define int long long

int cutValue(const ListUGraph& g, const ListUGraph::UEdgeMap<int>& c,

           const ListUGraph::NodeMap<bool>& n) {

  int v = 0;

  for (ListUGraph::UEdgeIt e(g); e != INVALID; ++e) {

    if (n[g.source(e)] != n[g.target(e)]) {

      v += c[e];

    }

  }

  return v;

}

int cutSize(const ListUGraph& g, const ListUGraph::NodeMap<bool>& nm) {

  int m = 0;

  for (ListUGraph::NodeIt n(g); n != INVALID; ++n) {

    if (nm[n]) {

      ++m;

    }

  }

  return m;

}

int testNI(const ListUGraph& g, const ListUGraph::UEdgeMap<int>& c) {

  TimeReport tr("Nagamochi-Ibaraki : ");

  NagamochiIbaraki<ListUGraph, ListUGraph::UEdgeMap<int> > alg(g, c);

  alg.run();

  ListUGraph::NodeMap<bool> n(g);

  alg.minCut(n);

  std::cout << "Check : " << cutValue(g, c, n) << ' '

            << cutSize(g, n) << std::endl;

  return alg.minCut();

}

int testHO(const ListUGraph& g, const ListUGraph::UEdgeMap<int>& c) {

  TimeReport tr("Hao-Orlin : ");

  HaoOrlin<ListUGraph, ListUGraph::UEdgeMap<int> > alg(g, c);

  alg.init();

  alg.calculateOut();

  ListUGraph::NodeMap<bool> n(g);

  alg.minCut(n);

  std::cout << "Check : " << cutValue(g, c, n) << ' '

            << cutSize(g, n) << std::endl;

  return alg.minCut();

}

void testBikeWheelUGraph(int n) {

  ListUGraph g;

  ListUGraph::UEdgeMap<int> c(g);

  genBikeWheelUGraph(g, c, n);

  std::cout << "Node number : " << n << std::endl;

  std::cout << "Hao-Orlin : " << testHO(g, c) << std::endl;

  std::cout << "Nagamochi-Ibaraki : " << testNI(g, c) << std::endl;

}

void testBikeWheelUGraph() {

  std::cout << "BikeWheelUGraph : " << std::endl;

  for (int k = 10; k <= 13; ++k) {

    int n = 1 << k;

    testBikeWheelUGraph(n);

  }

}

void testNoiUGraph(int n, int d, int k, int p) {

  ListUGraph g;

  ListUGraph::UEdgeMap<int> c(g);

  genNoiUGraph(g, c, n, d, k, p);

  std::cout << "Node number : " << n << std::endl;

  std::cout << "Density : " << d << std::endl;

  std::cout << "Tight components : " << k << std::endl;

  std::cout << "Scale : " << p << std::endl;

  std::cout << "Hao-Orlin : " << testHO(g, c) << std::endl;

  std::cout << "Nagamochi-Ibaraki : " << testNI(g, c) << std::endl;

}

void testNoiUGraph() {

  std::cout << "NoiUGraph : " << std::endl; 

  std::cout << "Serial 1 : " << std::endl;

  for (int n = 300; n <= 1000; n += 100) {

    testNoiUGraph(n, 50, 1, n);

  }

  std::cout << "Serial 2 : " << std::endl;

  for (int n = 300; n <= 1000; n += 100) {

    testNoiUGraph(n, 50, 2, n);

  }

  std::cout << "Serial 3 : " << std::endl;

  int da3[] = { 5, 10, 25, 50, 75, 100 };

  int dn3 = sizeof(da3) / sizeof(da3[0]);

  for (int d = 0; d < dn3; ++d) {

    testNoiUGraph(1000, da3[d], 1, 1000);

  }

  std::cout << "Serial 4 : " << std::endl;

  for (int d = 0; d < dn3; ++d) {

    testNoiUGraph(1000, da3[d], 2, 1000);

  }

  std::cout << "Serial 5 : " << std::endl;

  int ka5[] = {1, 2, 3, 5, 7, 10, 20, 30, 33, 35, 

               40, 50, 100, 200, 300, 400, 500};

  int kn5 = sizeof(ka5) / sizeof(ka5[0]);

  for (int k = 0; k < kn5; ++k) {

    testNoiUGraph(1000, 50, ka5[k], 1000);

  }

  std::cout << "Serial 6 : " << std::endl;

  int pa6[] = { 5000, 2000, 1000, 500, 250, 100, 50, 10, 1};

  int pn6 = sizeof(pa6) / sizeof(pa6[0]);

  for (int p = 0; p < pn6; ++p) {

    testNoiUGraph(1000, 50, 2, pa6[p]);

  }  

}

void testRegUGraph(int n, int d) {

  ListUGraph g;

  ListUGraph::UEdgeMap<int> c(g);

  genRegUGraph(g, c, n, d);

  std::cout << "Node number : " << n << std::endl;

  std::cout << "Number of cycles : " << d << std::endl;

  std::cout << "Hao-Orlin : " << testHO(g, c) << std::endl;

  std::cout << "Nagamochi-Ibaraki : " << testNI(g, c) << std::endl;

}

void testRegUGraph() {

  std::cout << "RegUGraph : " << std::endl; 

  std::cout << "Serial 1 : " << std::endl;

  int da1[] = { 1, 3, 10, 33, 100, 333, 1000};

  int dn1 = sizeof(da1) / sizeof(da1[0]);

  for (int d = 0; d < dn1; ++d) {

    testRegUGraph(1001, da1[d]);

  }

  std::cout << "Serial 2 : " << std::endl;

  int na2[] = { 50, 100, 200, 400, 800};

  int nn2 = sizeof(na2) / sizeof(na2[0]);

  for (int n = 0; n < nn2; ++n) {

    testRegUGraph(na2[n], 50);

  }

  std::cout << "Serial 3 : " << std::endl;

  for (int n = 8; n <= 14; ++n) {

    testRegUGraph(1 << n, 2);

  }

  std::cout << "Serial 4 : " << std::endl;

  for (int n = 7; n <= 11; ++n) {

    testRegUGraph(1 << n, 1 << (n - 4));

  }  

}