Initial commit

.gitignore

+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app

ArrayGraph.cpp

+#include "ArrayGraph.h"
+#include <iostream>
+
+ArrayGraph::ArrayGraph(unsigned vertexNumber)
+{
+    //ctor
+    this->vertexNumber = vertexNumber;
+    graphMatrix = new unsigned*[vertexNumber];
+    graphArray = new unsigned[vertexNumber*vertexNumber];
+    // W ten sposob cala tablica bedzie w pamieci w jednej czesci
+    // (mniej chybien w odwolaniach procesora do cache)
+
+    for(int i = 0; i < vertexNumber; i++)
+    {
+        graphMatrix[i] = graphArray + i * vertexNumber;
+
+        for(int j = 0; j < vertexNumber; j++)
+            graphMatrix[i][j] = 0;
+    }
+}
+
+ArrayGraph::~ArrayGraph()
+{
+    //dtor
+    delete graphArray;
+    delete graphMatrix;
+}
+
+bool ArrayGraph::addEdge(unsigned v, unsigned w, unsigned weight)
+{
+    if(weight >= 1000)
+        // Waga krawedzi musi byc mniejsza od 1000
+        weight = 900;
+
+    if(graphMatrix[v][w] > 0)
+        return false;
+    else
+    {
+        graphMatrix[v][w] = weight;
+        return true;
+    }
+}
+
+bool ArrayGraph::removeEdge(unsigned v, unsigned w)
+{
+    if(graphMatrix[v][w] == 0)
+        return false;
+    else
+    {
+        graphMatrix[v][w] = 0;
+        return true;
+    }
+}
+
+unsigned ArrayGraph::getWeight(unsigned v, unsigned w)
+{
+    return graphMatrix[v][w];
+}
+
+void ArrayGraph::displayGraph()
+{
+    for(int i = 0; i < vertexNumber; i++)
+    {
+        for(int j = 0; j < vertexNumber; j++)
+        {
+            std::cout << graphMatrix[i][j] << '\t';
+        }
+        std::cout << std::endl;
+    }
+}

ArrayGraph.h

+#ifndef ARRAYGRAPH_H
+#define ARRAYGRAPH_H
+
+#include "Graph.h"
+
+class ArrayGraph : public Graph
+{
+    public:
+        ArrayGraph(unsigned vertexNumber);
+        virtual ~ArrayGraph();
+        bool addEdge(unsigned v, unsigned w, unsigned weight);
+        bool removeEdge(unsigned v, unsigned w);
+        unsigned getWeight(unsigned v, unsigned w);
+        void displayGraph();
+
+    protected:
+
+    private:
+        unsigned **graphMatrix;
+        unsigned *graphArray;
+
+};
+
+#endif // ARRAYGRAPH_H

Graph.cpp

+#include "Graph.h"
+#include "Stopwatch.h"
+#include <algorithm>
+#include <chrono>
+#include <queue>
+#include <random>
+#include <thread>
+
+#include <iostream>
+
+Graph::Graph()
+{
+    //ctor
+}
+
+Graph::~Graph()
+{
+    //dtor
+}
+
+unsigned Graph::getVertexNumber()
+{
+    return vertexNumber;
+}
+
+void Graph::randomGenerateFullGraph(Graph &graph, unsigned maxWeight)
+{
+    std::random_device randomSrc;
+    std::default_random_engine randomGen(randomSrc());
+    std::uniform_int_distribution<> weightDist(1, maxWeight);
+
+    for(int i = 0; i < graph.vertexNumber; i++)
+    {
+        for(int j = 0; j < graph.vertexNumber; j++)
+        {
+            if(i != j)
+            {
+                // Bez warunku na krawedzie juz wygenerowane...
+                // ...z tym radzi sobie juz metoda addEdge
+                int randomWeight = weightDist(randomGen);
+                graph.addEdge(i, j, randomWeight);
+            }
+        }
+    }
+}
+
+std::vector<unsigned> Graph::travellingSalesmanBruteForce(Graph &graph)
+{
+    // ALGORYTM przegladu zupelnego
+    // Implementacja: Jan Potocki 2017
+    // (refactoring 2019)
+    std::vector<unsigned> vertexArray;
+
+    // Generowanie "spisu" wierzcholkow
+    // (od razu w odpowiedniej kolejnosci dla next_permutation)
+    for(int i = 1; i < graph.vertexNumber; i++)
+        vertexArray.push_back(i);
+
+    std::vector<unsigned> minCombination;
+    int minRoute = -1;
+
+    // Petla przegladajaca kolejne permutacje
+    do
+    {
+        std::vector<unsigned> combination;
+
+        // Dodanie wierzcholka startowego i pierwszego na trasie
+        combination.push_back(0);
+        combination.push_back(vertexArray.front());
+
+        // W petli reszta wiercholkow
+        for(int i = 1; i < vertexArray.size(); i++)
+            combination.push_back(vertexArray.at(i));
+
+        // Powrot do wierzcholka startowego
+        combination.push_back(0);
+        // PEA 2
+        // Jan Potocki 2017
+
+        int route = 0;
+        for(int i = 1; i < combination.size(); i++)
+            route += graph.getWeight(combination.at(i - 1), combination.at(i));
+
+        if(minRoute == -1 || route < minRoute)
+        {
+            minRoute = route;
+            minCombination = combination;
+        }
+    }
+    while(next_permutation(vertexArray.begin(), vertexArray.end()));
+
+    return minCombination;
+}
+
+std::vector<unsigned> Graph::travellingSalesmanBranchAndBound(Graph &graph)
+{
+    // ALGORYTM pracujacy w oparciu o kolejke priorytetowa i niejawnie utworzone drzewo
+    // Zrodlo: www.ii.uni.wroc.pl/~prz/2011lato/ah/opracowania/met_podz_ogr.opr.pdf
+    // Autor: Mateusz Lyczek 2011
+    // Implementacja: Jan Potocki 2017
+    std::priority_queue<std::vector<unsigned>, std::vector< std::vector<unsigned> >, RouteComparison> routeQueue;
+    std::vector<unsigned> optimalRoute;     // Tu bedziemy zapisywac optymalne (w danej chwili) rozwiazanie
+    int optimalRouteLength = -1;            // -1 - bedziemy odtad uznawac, ze to jest nieskonczonosc ;-)
+
+    // UMOWA
+    // Pierwszy element wektora to dlugosc trasy (trzeba ustawic "z palca"!)
+    // Kolejne to wierzcholki na trasie
+    std::vector<unsigned> currentRoute;     // Niejawne tworzenie drzewa, tu bedzie korzen
+    currentRoute.push_back(0);              // Poczatkowe oszacowanie nie ma znaczenia
+    currentRoute.push_back(0);              // Wierzcholek startowy (korzen drzewa rozwiazan)
+    routeQueue.push(currentRoute);          // Dodanie do kolejki korzenia
+
+    while(!routeQueue.empty())
+    {
+        // Przypisanie korzenia do dalszej roboty
+        currentRoute = routeQueue.top();
+        routeQueue.pop();
+
+        // Sprawdzenie, czy rozwiazanie jest warte rozwijania, czy odrzucic
+        if(optimalRouteLength == -1 || currentRoute.at(0) < optimalRouteLength)
+        {
+            for(int i = 0; i < graph.vertexNumber; i++)
+            {
+                // Petla wykonywana dla kazdego potomka rozpatrywanego wlasnie rozwiazania w drzewie
+                // Ustalenie, czy dany wierzcholek mozna jeszcze wykorzystac, czy juz zostal uzyty
+                bool vertexUsed = false;
+                for(int j = 1; j < currentRoute.size(); j++)
+                {
+                    if(currentRoute.at(j) == i)
+                    {
+                        vertexUsed = true;
+                        break;
+                    }
+                }
+                if(vertexUsed)
+                    continue;
+
+                // Niejawne utworzenie nowego wezla reprezuntujacego rozpatrywane rozwiazanie...
+                std::vector<unsigned> nextRoute = currentRoute;
+                //unsigned nextLength = graph.getWeight(nextRoute.back(), i);
+                nextRoute.push_back(i);
+
+                // Dalej bedziemy postepowac roznie...
+                if(nextRoute.size() > graph.vertexNumber)
+                {
+                    // Doszlismy wlasnie do liscia
+                    // Dodajemy droge powrotna, nie musimy nic szacowac
+                    // (wszystko juz wiemy)
+                    nextRoute.push_back(0);
+
+                    nextRoute.at(0) = 0;
+
+                    for(int j = 1; j < nextRoute.size() - 1; j++)
+                    {
+                        // Liczymy dystans od poczatku do konca
+                        nextRoute.at(0) += graph.getWeight(nextRoute.at(j), nextRoute.at(j+ 1));
+                    }
+                    if(optimalRouteLength == -1 || nextRoute.at(0) < optimalRouteLength)
+                    {
+                        optimalRouteLength = nextRoute.at(0);
+                        nextRoute.erase(nextRoute.begin());
+                        optimalRoute = nextRoute;
+                    }
+                }
+                else
+                {
+                    // Liczenie tego, co juz wiemy, od nowa...
+                    // (dystans od poczatku)
+                    nextRoute.at(0) = 0;
+                    for(int j = 1; j < nextRoute.size() - 1; j++)
+                    {
+                        nextRoute.at(0) += graph.getWeight(nextRoute.at(j), nextRoute.at(j + 1));
+                    }
+
+                    // Reszte szacujemy...
+                    // Pomijamy od razu wierzcholek startowy
+                    for(int j = 1; j < graph.vertexNumber; j++)
+                    {
+                        // Odrzucenie wierzcholkow juz umieszczonych na trasie
+                        bool vertexUsed = false;
+                        for(int k = 1; k < currentRoute.size(); k++)
+                        {
+                            if(j == currentRoute.at(k))
+                            {
+                                vertexUsed = true;
+                                break;
+                            }
+                        }
+                        if(vertexUsed)
+                            continue;
+
+                        int minEdge = -1;
+                        for(int k = 0; k < graph.vertexNumber; k++)
+                        {
+                            // Odrzucenie krawedzi do wierzcholka 0 przy ostatnim wierzcholku w czesciowym rozwiazaniu
+                            // Wyjatkiem jest ostatnia mozliwa krawedz
+                            if(j == i && k == 0)
+                                continue;
+
+                            // Odrzucenie krawedzi do wierzcholka umieszczonego juz na rozwazanej trasie
+                            bool vertexUsed = false;
+                            for(int l = 2; l < nextRoute.size(); l++)
+                            {
+                                if(k == nextRoute.at(l))
+                                {
+                                    vertexUsed = true;
+                                    break;
+                                }
+                            }
+                            if(vertexUsed)
+                                continue;
+
+                            // Odrzucenie samego siebie
+                            if(k == j)
+                                continue;
+
+                            // Znalezienie najkrotszej mozliwej jeszcze do uzycia krawedzi
+                            unsigned consideredLength = graph.getWeight(j, k);
+
+                            if(minEdge == -1)
+                                minEdge = consideredLength;
+                            else if(minEdge > consideredLength)
+                                minEdge = consideredLength;
+                        }
+                        nextRoute.at(0) += minEdge;
+                    }
+
+                    // ...i teraz zastanawiamy sie co dalej
+                    if(optimalRouteLength == -1 || nextRoute.at(0) < optimalRouteLength)
+                    {
+                        routeQueue.push(nextRoute);
+                    }
+                }
+            }
+        }
+        else
+        {
+            // Jezeli jedno rozwiazanie odrzucilismy, to wszystkie inne tez mozemy
+            // (kolejka priorytetowa, inne nie moga byc lepsze)
+            break;
+        }
+    }
+
+    return optimalRoute;
+}
+
+std::vector<unsigned> Graph::travellingSalesmanGreedy(Graph &graph, unsigned startVertex)
+{
+    // ALGORYTM zachlanny z wierzcholkiem startowym przekazanym w parametrze
+    // Implementacja: Jan Potocki 2017
+    std::vector<unsigned> route;
+
+    // std::random_device randomSrc;
+    // std::default_random_engine randomGen(randomSrc());
+    // std::uniform_int_distribution<> vertexDist(0, graph.vertexNumber - 1);
+
+    // Losowanie wierzcholka startowego
+    //route.push_back(vertexDist(randomGen));
+    route.push_back(startVertex);
+
+    for(int i = 0; i < graph.vertexNumber - 1; i++)
+    {
+        int minEdge = -1;
+        unsigned nextVertex;
+        for(int j = 0; j < graph.vertexNumber; j++)
+        {
+            // Odrzucenie samego siebie lub wierzcholka startowego
+            // (zeby bylo szybciej)
+            if(route.back() == j || route.front() == j)
+                continue;
+
+            // Odrzucenie krawedzi do wierzcholka umieszczonego juz na trasie
+            bool vertexUsed = false;
+            for(int k = 0; k < route.size(); k++)
+            {
+                if(j == route.at(k))
+                {
+                    vertexUsed = true;
+                    break;
+                }
+            }
+            if(vertexUsed)
+                continue;
+
+            // Znalezienie najkrotszej mozliwej jeszcze do uzycia krawedzi
+            unsigned consideredLength = graph.getWeight(route.back(), j);
+
+            if(minEdge == -1)
+            {
+                minEdge = consideredLength;
+                nextVertex = j;
+            }
+            else if(minEdge > consideredLength)
+            {
+                minEdge = consideredLength;
+                nextVertex = j;
+            }
+        }
+        route.push_back(nextVertex);
+    }
+
+    route.push_back(startVertex);
+    return route;
+}
+
+std::vector<unsigned> Graph::travellingSalesmanHybrid(Graph &graph)
+{
+    // ALGORYTM hybrydowy losowo-zachlanny
+    // Losowa czesc wierzcholkow jest losowana, reszta zachlannie
+    // Implementacja: Jan Potocki 2019
+    std::vector<unsigned> route;
+
+    std::random_device randomSrc;
+    std::default_random_engine randomGen(randomSrc());
+    std::uniform_int_distribution<> vertexNumberDist(1, graph.vertexNumber);
+    std::uniform_int_distribution<> vertexDist(0, graph.vertexNumber - 1);
+
+    // Liczba losowanych wierzcholkow
+    unsigned randomVertexNumber = vertexNumberDist(randomGen);
+
+    // Czesc losowa
+    for(int i = 0; i < randomVertexNumber; i++)
+    {
+        unsigned randomVertex;
+        bool vertexUsed;
+
+        do
+        {
+            randomVertex = vertexDist(randomGen);
+            vertexUsed = false;
+
+            for(int j = 0; j < route.size(); j++)
+            {
+                if(route.at(j) == randomVertex)
+                {
+                    vertexUsed = true;
+                    break;
+                }
+            }
+        } while(vertexUsed == true);
+
+        route.push_back(randomVertex);
+    }
+
+    // Czesc zachlanna
+    for(int i = 0; i < graph.vertexNumber - randomVertexNumber; i++)
+    {
+        int minEdge = -1;
+        unsigned nextVertex;
+        for(int j = 0; j < graph.vertexNumber; j++)
+        {
+            // Odrzucenie samego siebie lub wierzcholka startowego
+            // (zeby bylo szybciej)
+            if(route.back() == j || route.front() == j)
+                continue;
+
+            // Odrzucenie krawedzi do wierzcholka umieszczonego juz na trasie
+            bool vertexUsed = false;
+            for(int k = 0; k < route.size(); k++)
+            {
+                if(j == route.at(k))
+                {
+                    vertexUsed = true;
+                    break;
+                }
+            }
+            if(vertexUsed)
+                continue;
+
+            // Znalezienie najkrotszej mozliwej jeszcze do uzycia krawedzi
+            unsigned consideredLength = graph.getWeight(route.back(), j);
+
+            if(minEdge == -1)
+            {
+                minEdge = consideredLength;
+                nextVertex = j;
+            }
+            else if(minEdge > consideredLength)
+            {
+                minEdge = consideredLength;
+                nextVertex = j;
+            }
+        }
+        route.push_back(nextVertex);
+    }
+
+    route.push_back(route.front());
+    return route;
+}
+
+std::vector<unsigned> Graph::travellingSalesmanRandom(Graph &graph)
+{
+    // ALGORYTM losowy
+    // Implementacja: Jan Potocki 2019
+    std::vector<unsigned> route;
+
+    std::random_device randomSrc;
+    std::default_random_engine randomGen(randomSrc());
+    std::uniform_int_distribution<> vertexDist(0, graph.vertexNumber - 1);
+
+    for(int i = 0; i < graph.vertexNumber; i++)
+    {
+        unsigned randomVertex;
+        bool vertexUsed;
+
+        do
+        {
+            randomVertex = vertexDist(randomGen);
+            vertexUsed = false;
+
+            for(int j = 0; j < route.size(); j++)
+            {
+                if(route.at(j) == randomVertex)
+                {
+                    vertexUsed = true;
+                    break;
+                }
+            }
+        } while(vertexUsed == true);
+
+        route.push_back(randomVertex);
+    }
+
+    route.push_back(route.front());
+    return route;
+}
+
+std::vector<unsigned> Graph::travellingSalesmanTabuSearch(Graph &graph, unsigned tabuSteps, bool diversification, int iterationsToRestart, unsigned minStopTime, unsigned threadsNumber)
+{
+    // ALGORYTM wielawotkowy oparty na metaheurystyce tabu search
+    // Pomocniczy kod uruchamiajacy watki wlasciwego algorytmu w najbardziej optymalny sposob
+    // Implementacja: Jan Potocki 2019
+    std::vector<unsigned> startVertexVector;
+    std::vector<std::thread> threadsVector;
+    std::vector<std::vector<unsigned>> resultsVector(threadsNumber);
+    std::vector<int> resultsLength(threadsNumber);
+    std::vector<unsigned> optimalResult;
+    int optimalResultIndex;
+    int optimalResultLength;
+
+    std::random_device randomSrc;
+    std::default_random_engine randomGen(randomSrc());
+    std::uniform_int_distribution<> vertexDist(0, graph.vertexNumber - 1);
+
+    for(int i = 0; i < threadsNumber; i++)
+    {
+        std::vector<unsigned> startRoute;
+        unsigned startVertex;
+        bool startVertexUsed;
+
+        if(i < graph.vertexNumber)
+        {
+            do
+            {
+                startVertex = vertexDist(randomGen);
+                startVertexUsed = false;
+
+                for(int j = 0; j < startVertexVector.size(); j++)
+                {
+                    if(startVertexVector.at(j) == startVertex)
+                    {
+                        startVertexUsed = true;
+                        break;
+                    }
+                }
+            } while(startVertexUsed == true);
+
+            startVertexVector.push_back(startVertex);
+            startRoute = Graph::travellingSalesmanGreedy(graph, startVertex);
+        }
+        else
+        {
+            startRoute = Graph::travellingSalesmanRandom(graph);
+        }
+
+        threadsVector.push_back(std::thread(Graph::travellingSalesmanTabuSearchEngine, std::ref(graph), tabuSteps, diversification, iterationsToRestart, minStopTime, startRoute, std::ref(resultsVector.at(i)), std::ref(resultsLength.at(i))));
+    }
+
+    for(int i = 0; i < threadsNumber; i++)
+        threadsVector.at(i).join();
+
+    optimalResultIndex = 0;
+    optimalResultLength = resultsLength.at(0);
+
+    for(int i = 0; i < threadsNumber; i++)
+    {
+        if(resultsLength.at(i) < optimalResultLength)
+        {
+            optimalResultIndex = i;
+            optimalResultLength = resultsLength.at(i);
+        }
+    }
+
+    optimalResult = resultsVector.at(optimalResultIndex);
+
+    return optimalResult;
+}
+
+void Graph::travellingSalesmanTabuSearchEngine(Graph &graph, unsigned tabuSteps, bool diversification, int iterationsToRestart, unsigned minStopTime, std::vector<unsigned> startRoute, std::vector<unsigned> &result, int &resultLength)
+{
+    // ALGORYTM oparty na metaheurystyce tabu search z dywersyfikacja i sasiedztwem typu swap
+    // Rdzen przeznaczony do uruchamiania jako jeden watek
+    // Projekt i implementacja: Jan Potocki 2017
+    // (refactoring 2019)
+    Stopwatch onboardClock;
+
+    std::vector<unsigned> optimalRoute;     // Tu bedziemy zapisywac optymalne (w danej chwili) rozwiazanie
+    int optimalRouteLength = -1;            // -1 - bedziemy odtad uznawac, ze to jest nieskonczonosc ;-)
+    std::vector<unsigned> currentRoute;     // Rozpatrywane rozwiazanie
+
+    // Wyznaczenie poczatkowego rozwiazania algorytmem zachlannym
+    //currentRoute = Graph::travellingSalesmanGreedy(graph);
+    currentRoute = startRoute;
+
+    // Inicjalizacja glownej petli...
+    std::vector< std::vector<unsigned> > tabuArray;
+    unsigned currentTabuSteps = tabuSteps;
+    int stopCounter = 0;
+    bool timeNotExceeded = true;
+    onboardClock.start();
+
+    // Rdzen algorytmu
+    while(timeNotExceeded == true)
+    {
+        bool cheeseSupplied = true;
+        bool intensification = false;
+
+        while(cheeseSupplied == true)
+        {
+            std::vector<unsigned> nextRoute;
+            int nextRouteLength = -1;
+
+            std::vector<unsigned> nextTabu(3, 0);
+            nextTabu.at(0) = currentTabuSteps;
+
+            // Generowanie sasiedztwa typu swap przez zamiane wierzcholkow
+            // (wierzcholka startowego i zarazem ostatniego nie ruszamy,
+            // pomijamy tez od razu aktualny wierzcholek)
+            for(int i = 1; i < graph.vertexNumber - 1; i++)
+            {
+                for(int j = i + 1; j < graph.vertexNumber; j++)
+                {
+                    std::vector<unsigned> neighbourRoute = currentRoute;
+
+                    // Zamiana
+                    unsigned buffer = neighbourRoute.at(j);
+                    neighbourRoute.at(j) = neighbourRoute.at(i);
+                    neighbourRoute.at(i) = buffer;
+
+                    unsigned neighbourRouteLength = 0;
+                    for(int i = 1; i < neighbourRoute.size(); i++)
+                        neighbourRouteLength += graph.getWeight(neighbourRoute.at(i - 1), neighbourRoute.at(i));
+
+                    // Sprawdzenie, czy dany ruch nie jest na liscie tabu
+                    // (dwa wierzcholki)
+                    bool tabu = false;
+                    for(int k = 0; k < tabuArray.size(); k++)
+                    {
+                        if(tabuArray.at(k).at(1) == i && tabuArray.at(k).at(2) == j)
+                        {
+                            tabu = true;
+                            break;
+                        }
+
+                        if(tabuArray.at(k).at(1) == j && tabuArray.at(k).at(2) == i)
+                        {
+                            tabu = true;
+                            break;
+                        }
+                    }
+
+                    // Kryterium aspiracji...
+                    if(tabu == true && neighbourRouteLength >= optimalRouteLength)
+                        // ...jezeli niespelnione - pomijamy ruch
+                        continue;
+
+                    if(nextRouteLength == -1)
+                    {
+                        nextRouteLength = neighbourRouteLength;
+                        nextRoute = neighbourRoute;
+                        nextTabu.at(1) = i;
+                        nextTabu.at(2) = j;
+                    }
+                    else if(nextRouteLength > neighbourRouteLength)
+                    {
+                        nextRouteLength = neighbourRouteLength;
+                        nextRoute = neighbourRoute;
+                        nextTabu.at(1) = i;
+                        nextTabu.at(2) = j;
+                    }
+                }
+            }
+
+            currentRoute = nextRoute;
+
+            if(optimalRouteLength == -1)
+            {
+                optimalRouteLength = nextRouteLength;
+                optimalRoute = nextRoute;
+
+                // Reset licznika
+                stopCounter = 0;
+            }
+            else if(optimalRouteLength > nextRouteLength)
+            {
+                optimalRouteLength = nextRouteLength;
+                optimalRoute = nextRoute;
+
+                // Zaplanowanie intensyfikacji
+                intensification = true;
+
+                // Reset licznika
+                stopCounter = 0;
+            }
+
+            // Weryfikacja listy tabu...
+            // ...aktualizacja kadencji na liscie tabu
+            for(int i = 0; i < tabuArray.size(); i++)
+            {
+                tabuArray.at(i).at(0)--;
+            }
+
+            //...usuniecie zerowych kadencji
+            for(int i = 0; i < tabuArray.size(); i++)
+            {
+                if(tabuArray.at(i).at(0) == 0)
+                    tabuArray.erase(tabuArray.begin() + i);
+            }
+
+            // ...dopisanie ostatniego ruchu do listy tabu
+            tabuArray.push_back(nextTabu);
+
+            // Zliczenie iteracji
+            stopCounter++;
+
+            // Zmierzenie czasu
+            onboardClock.stop();
+            if(onboardClock.read() > minStopTime)
+                timeNotExceeded = false;
+
+            // Sprawdzenie warunku zatrzymania
+            if(diversification == true)
+            {
+                // Przy aktywowanej dywersyfikacji - po zadanej liczbie iteracji bez poprawy
+                if(stopCounter >= iterationsToRestart || timeNotExceeded == false)
+                    cheeseSupplied = false;
+            }
+            else
+            {
+                // Przy nieaktywowanej dywersyfikacji - po uplynieciu okreslonego czasu
+                if(timeNotExceeded == false)
+                    cheeseSupplied = false;
+            }
+        }
+
+        // Dywersyfikacja
+        if(diversification == true)
+        {
+            if(intensification == true)
+            {
+                // Intensyfikacja przeszukiwania przy ostatnim minimum
+                currentRoute = optimalRoute;
+                currentTabuSteps = tabuSteps / 4;
+                intensification = false;
+            }
+            else
+            {
+                // Algorytm hybrydowy losowo-zachlanny
+                currentRoute = Graph::travellingSalesmanHybrid(graph);
+                currentTabuSteps = tabuSteps;
+                intensification = false;
+            }
+        }
+
+        // Reset licznika iteracji przed restartem
+        stopCounter = 0;
+    }
+
+    result = optimalRoute;
+    resultLength = optimalRouteLength;
+}

Graph.h

+#ifndef GRAPH_H
+#define GRAPH_H
+#include <vector>
+
+
+class Graph
+{
+    public:
+        Graph();
+        virtual ~Graph();
+        virtual bool addEdge(unsigned v, unsigned w, unsigned weight) = 0;
+        virtual bool removeEdge(unsigned v, unsigned w) = 0;
+        virtual unsigned getWeight(unsigned v, unsigned w) = 0;
+        unsigned getVertexNumber();
+        virtual void displayGraph() = 0;
+        static void randomGenerateFullGraph(Graph &graph, unsigned maxWeight);
+        static std::vector<unsigned> travellingSalesmanBruteForce(Graph &graph);
+        static std::vector<unsigned> travellingSalesmanBranchAndBound(Graph &graph);
+        static std::vector<unsigned> travellingSalesmanGreedy(Graph &graph, unsigned startVertex);
+        static std::vector<unsigned> travellingSalesmanHybrid(Graph &graph);
+        static std::vector<unsigned> travellingSalesmanRandom(Graph &graph);
+        static std::vector<unsigned> travellingSalesmanTabuSearch(Graph &graph, unsigned tabuSteps, bool diversification, int iterationsToRestart, unsigned minStopTime, unsigned threadsNumber);
+
+    protected:
+        unsigned vertexNumber;
+
+    private:
+        static void travellingSalesmanTabuSearchEngine(Graph &graph, unsigned tabuSteps, bool diversification, int iterationsToRestart, unsigned minStopTime, std::vector<unsigned> startRoute, std::vector<unsigned> &result, int &resultLength);
+
+        class RouteComparison
+        {
+            public:
+                bool operator() (const std::vector<unsigned>& lhs, const std::vector<unsigned>& rhs) const
+                {
+                    return (lhs.at(0) > rhs.at(0));
+                }
+        };
+};
+
+#endif // GRAPH_H

ListGraph.cpp

+#include "ListGraph.h"
+#include <iostream>
+
+ListGraph::ListGraph(unsigned vertexNumber)
+{
+    //ctor
+    this->vertexNumber = vertexNumber;
+    graphList = new element*[vertexNumber];
+
+    for(int i = 0; i < vertexNumber; i++)
+        graphList[i] = NULL;
+}
+
+ListGraph::~ListGraph()
+{
+    //dtor
+    for(int i = 0; i < vertexNumber; i++)
+    {
+        if(graphList[i] != NULL)
+        {
+            element *position = graphList[i];
+            do
+            {
+                element *next = position->next;
+                delete position;
+                position = next;
+            }
+            while(position != NULL);
+        }
+    }
+
+    delete[] graphList;
+}
+
+bool ListGraph::addEdge(unsigned v, unsigned w, unsigned weight)
+{
+    if(weight >= 1000)
+        // Waga krawedzi musi byc mniejsza od 1000
+        weight = 900;
+
+    if(graphList[v] == NULL)
+    {
+        graphList[v] = new element;
+        graphList[v]->vertex = w;
+        graphList[v]->weight = weight;
+        graphList[v]->next = NULL;
+
+        return true;
+    }
+    else
+    {
+        bool isAlready = false;
+        element *next = graphList[v];
+        element *position = NULL;
+        do
+        {
+            position = next;
+            next = next->next;
+            if(position->vertex == w)
+            {
+                isAlready = true;
+                break;
+            }
+        }
+        while(next != NULL);
+
+        if(!isAlready)
+        {
+            element *newEdge = new element;
+            newEdge->vertex = w;
+            newEdge->weight = weight;
+            newEdge->next = NULL;
+            position->next = newEdge;
+
+            return true;
+        }
+        else
+            return false;
+    }
+}
+
+bool ListGraph::removeEdge(unsigned v, unsigned w)
+{
+    if(graphList[v] == NULL)
+        return false;
+    else
+    {
+        bool isAlready = false;
+        element *next = graphList[v];
+        element *position = NULL;
+        element *prev = NULL;
+        do
+        {
+            prev = position;
+            position = next;
+            next = next->next;
+            if(position->vertex == w)
+            {
+                isAlready = true;
+                break;
+            }
+        }
+        while(next != NULL);
+
+        if(!isAlready)
+            return false;
+        else
+        {
+            delete position;
+            if(prev != NULL)
+                prev->next = next;
+            else
+                graphList[v] = next;
+
+            return true;
+        }
+    }
+}
+
+unsigned ListGraph::getWeight(unsigned v, unsigned w)
+{
+    if(graphList[v] == NULL)
+        return 0;
+    else
+    {
+        bool isAlready = false;
+        element *next = graphList[v];
+        element *position = NULL;
+        do
+        {
+            position = next;
+            next = next->next;
+            if(position->vertex == w)
+            {
+                isAlready = true;
+                break;
+            }
+        }
+        while(next != NULL);
+
+        if(!isAlready)
+            return 0;
+        else
+            return position->weight;
+    }
+}
+
+void ListGraph::displayGraph()
+{
+    for(int i = 0; i < vertexNumber; i++)
+    {
+        std::cout << i << " -> ";
+        if(graphList[i] != NULL)
+        {
+            element *next = graphList[i];
+            element *position = NULL;
+            do
+            {
+                position = next;
+                next = next->next;
+                std::cout << position->vertex << '@' << position->weight << ' ';
+            }
+            while(next != NULL);
+        }
+        std::cout << std::endl;
+    }
+}

ListGraph.h

+#ifndef LISTGRAPH_H
+#define LISTGRAPH_H
+
+#include "Graph.h"
+
+class ListGraph : public Graph
+{
+    public:
+        ListGraph(unsigned vertexNumber);
+        virtual ~ListGraph();
+        bool addEdge(unsigned v, unsigned w, unsigned weight);
+        bool removeEdge(unsigned v, unsigned w);
+        unsigned getWeight(unsigned v, unsigned w);
+        void displayGraph();
+
+    protected:
+
+    private:
+        struct element
+        {
+            unsigned vertex;
+            int weight;
+            element *next;
+        };
+        element **graphList;
+
+};
+
+#endif // LISTGRAPH_H

Makefile

+CXXFLAGS =	-O3 -Wall -std=c++11
+
+ifeq ($(OS),Windows_NT)
+	detected_OS := Windows
+else
+	detected_OS := $(shell uname)
+endif
+ifeq ($(detected_OS),Darwin)
+    CXXFLAGS += -stdlib=libc++
+endif
+
+OBJS =		pea2plus.o ArrayGraph.o Graph.o ListGraph.o Stopwatch.o
+
+LIBS =		-pthread
+
+TARGET =	pea2plus
+
+$(TARGET):	$(OBJS)
+	$(CXX) -o $(TARGET) $(OBJS) $(LIBS)
+
+all:	$(TARGET)
+
+clean:
+	rm -f $(OBJS) $(TARGET)

Stopwatch.cpp

+#include "Stopwatch.h"
+
+Stopwatch::Stopwatch()
+{
+    //ctor
+    // Jan Potocki 2017-2019
+}
+
+void Stopwatch::start()
+{
+    tstart = std::chrono::steady_clock::now();
+}
+
+void Stopwatch::stop()
+{
+    tstop = std::chrono::steady_clock::now();
+    measurement = tstop - tstart;
+}
+
+double Stopwatch::read()
+{
+    return measurement.count();
+}

Stopwatch.h

+#ifndef STOPWATCH_H
+#define STOPWATCH_H
+
+#include <chrono>
+
+// Klasa do pomiaru czasu (wieloplatformowa)
+// Jan Potocki 2017-2019
+class Stopwatch
+{
+    public:
+        Stopwatch();
+        void start();
+        void stop();
+        double read();
+    protected:
+    private:
+        std::chrono::duration<double> measurement;
+        std::chrono::time_point<std::chrono::steady_clock> tstart;
+        std::chrono::time_point<std::chrono::steady_clock> tstop;
+};
+
+#endif // STOPWATCH_H

pea2plus.cpp

+#include <fstream>
+#include <iostream>
+#include <string>
+#include <vector>
+#include <cmath>
+#include "Stopwatch.h"
+#include "ArrayGraph.h"
+#include "ListGraph.h"
+
+using namespace std;
+
+// USTAWIENIA
+// Liczba powtorzen automatycznych pomiarow do usrednienia
+const int measureIterations = 10;
+// liczba automatycznych pomiarow
+const int measureNumber = 4;
+// Czas zatrzymania algorytmu tabu search w kazdym z automatycznych pomiarow
+const int measureTabuStop[4] = {1, 5, 10, 15};
+// Maksymalna odleglosc miast przy automatycznym generowaniu
+const int measureSalesmanDistance = 400;
+
+// Kadencja tabu search
+const int tabuLength = 30;
+// Kryterium dywersyfikacji, liczba iteracji bez poprawy
+const int tabuIterationsToRestart = 10000;
+
+// Wykorzystanie reprezentacji grafu w postaci list sasiedztwa...
+// ...zamiast (domyslnie) macierzy sasiedztwa
+// (wolniejsze obliczenia, mniejsze uzycie pamieci)
+const bool useListGraph = false;
+
+// Liczba watkow tabu search
+const unsigned tabuThreadsNumber = 2;
+
+// Domyslny czas zatrzymania algorytmu tabu search [s]
+int tabuStopTime = 60;
+
+// Domyslny stan dywersyfikacji
+bool tabuDiversification = true;
+
+int main()
+{
+    Stopwatch clock;                // czasomierz
+    Graph *graph = NULL;            // <- tu bedziemy zapisywac adresy przez caly program
+
+    cout << "PEA Projekt 2 v2.0ALPHA Plus" << endl;
+    cout << "Jan Potocki 2017-2019" << endl;
+    cout << "(beerware)" << endl;
+    if(useListGraph)
+        cout << "Uzycie listowej reprezentacji grafu" << endl;
+    else
+        cout << "Uzycie macierzowej reprezentacji grafu" << endl;
+    cout << endl;
+
+    int salesmanSelection;
+    do
+    {
+        cout << "1 - wygeneruj losowe dane" << endl;
+        cout << "2 - wyswietl dane" << endl;
+        cout << "3 - dywersyfikacja TS" << endl;
+        cout << "4 - czas zatrzymania TS" << endl;
+        cout << "5 - tabu search" << endl;
+        cout << "6 - algorytm zachlanny" << endl;
+        cout << "7 - podzial i ograniczenia" << endl;
+        cout << "8 - przeglad zupelny" << endl;
+        cout << "9 - automatyczne pomiary (tabu search)" << endl;
+        cout << "10 - wczytaj dane z pliku ATSP" << endl;
+        cout << "11 - wczytaj dane z pliku TSP" << endl;
+        cout << "Aby zakonczyc - 0" << endl;
+        cout << "Wybierz: ";
+        cin >> salesmanSelection;
+        cout << endl;
+
+        switch(salesmanSelection)
+        {
+            case 1:
+            {
+                int vertex;
+                cout << "Liczba miast: ";
+                cin >> vertex;
+                cout << endl;
+
+                if(graph != NULL)
+                    delete graph;
+
+                if(useListGraph)
+                    graph = new ListGraph(vertex);
+                else
+                    graph = new ArrayGraph(vertex);
+
+                Graph::randomGenerateFullGraph(*graph, measureSalesmanDistance);
+            }
+            break;
+            case 2:
+            {
+                if(graph != NULL)
+                    graph->displayGraph();
+                else
+                    cout << "Brak wygenerowanych danych" << endl;
+                cout << endl;
+            }
+            break;
+            case 3:
+            {
+                tabuDiversification = !tabuDiversification;
+
+                if(tabuDiversification == true)
+                    cout << "Dywersyfikacja TS zostala wlaczona" << endl;
+                else
+                    cout << "Dywersyfikacja TS zostala wylaczona" << endl;
+                cout << endl;
+            }
+            break;
+            case 4:
+            {
+                cout << "Poprzedni czas pracy TS: " << tabuStopTime << endl;
+                cout << "Podaj nowy czas: ";
+                cin >> tabuStopTime;
+                cout << endl;
+            }
+            break;
+            case 5:
+            {
+                if(graph != NULL)
+                {
+                    if(tabuStopTime != 0)
+                    {
+                        cout << "Kadencja: " << tabuLength << endl;
+                        cout << "Czas zatrzymania algorytmu [s]: " << tabuStopTime << endl;
+
+                        if(tabuDiversification == true)
+                            cout << "Dywersyfikacja wlaczona, kryterium: " << tabuIterationsToRestart << " iteracji" << endl;
+                        else
+                            cout << "Dywersyfikacja wylaczona" << endl;
+
+                        cout << endl;
+
+                        clock.start();
+                        vector<unsigned> route = Graph::travellingSalesmanTabuSearch(*graph, tabuLength, tabuDiversification, tabuIterationsToRestart, tabuStopTime, tabuThreadsNumber);
+                        clock.stop();
+
+                        // Wyswietlenie trasy
+                        unsigned distFromStart = 0;
+                        unsigned length = 0;
+                        cout << route.at(0) << '\t' << length << '\t' << distFromStart << endl;
+                        for(int i = 1; i < route.size(); i++)
+                        {
+                            length = graph->getWeight(route.at(i - 1), route.at(i));
+                            distFromStart += length;
+
+                            cout << route.at(i) << '\t' << length << '\t' << distFromStart << endl;
+                        }
+
+                        cout << "Dlugosc trasy: " << distFromStart << endl;
+                        cout << endl;
+                        cout << "Czas wykonania algorytmu [s]: " << clock.read() << endl;
+                    }
+                    else
+                    {
+                        // Easter egg ;-)
+                        cout << "+++ MELON MELON MELON +++ Blad: Brak Sera! +++ !!!!! +++" << endl;
+                    }
+                }
+                else
+                    cout << "+++ MELON MELON MELON +++ Brak zaladowanych danych +++" << endl;
+                cout << endl;
+            }
+            break;
+            case 6:
+            {
+                if(graph != NULL)
+                {
+                    clock.start();
+                    vector<unsigned> route = Graph::travellingSalesmanGreedy(*graph, 0);
+                    clock.stop();
+
+                    // Wyswietlenie trasy
+                    unsigned distFromStart = 0;
+                    unsigned length = 0;
+                    cout << route.at(0) << '\t' << length << '\t' << distFromStart << endl;
+                    for(int i = 1; i < route.size(); i++)
+                    {
+                        length = graph->getWeight(route.at(i - 1), route.at(i));
+                        distFromStart += length;
+
+                        cout << route.at(i) << '\t' << length << '\t' << distFromStart << endl;
+                    }
+
+                    cout << "Dlugosc trasy: " << distFromStart << endl;
+                    cout << endl;
+                    cout << "Czas wykonania algorytmu [s]: " << clock.read() << endl;
+                }
+                else
+                    cout << "+++ MELON MELON MELON +++ Brak zaladowanych danych +++" << endl;
+                cout << endl;
+            }
+            break;
+            case 7:
+            {
+                if(graph != NULL)
+                {
+                    clock.start();
+                    vector<unsigned> route = Graph::travellingSalesmanBranchAndBound(*graph);
+                    clock.stop();
+
+                    // Wyswietlenie trasy
+                    unsigned distFromStart = 0;
+                    unsigned length = 0;
+                    cout << route.at(0) << '\t' << length << '\t' << distFromStart << endl;
+                    for(int i = 1; i < route.size(); i++)
+                    {
+                        length = graph->getWeight(route.at(i - 1), route.at(i));
+                        distFromStart += length;
+
+                        cout << route.at(i) << '\t' << length << '\t' << distFromStart << endl;
+                    }
+
+                    cout << "Dlugosc trasy: " << distFromStart << endl;
+                    cout << endl;
+                    cout << "Czas wykonania algorytmu [s]: " << clock.read() << endl;
+                }
+                else
+                    cout << "+++ MELON MELON MELON +++ Brak zaladowanych danych +++" << endl;
+                cout << endl;
+            }
+            break;
+            case 8:
+            {
+                if(graph != NULL)
+                {
+                    clock.start();
+                    vector<unsigned> route = Graph::travellingSalesmanBruteForce(*graph);
+                    clock.stop();
+
+                    // Wyswietlenie trasy
+                    unsigned distFromStart = 0;
+                    unsigned length = 0;
+                    cout << route.at(0) << '\t' << length << '\t' << distFromStart << endl;
+                    for(int i = 1; i < route.size(); i++)
+                    {
+                        length = graph->getWeight(route.at(i - 1), route.at(i));
+                        distFromStart += length;
+
+                        cout << route.at(i) << '\t' << length << '\t' << distFromStart << endl;
+                    }
+
+                    cout << "Dlugosc trasy: " << distFromStart << endl;
+                    cout << endl;
+                    cout << "Czas wykonania algorytmu [s]: " << clock.read() << endl;
+                }
+                else
+                    cout << "+++ MELON MELON MELON +++ Brak zaladowanych danych +++" << endl;
+                cout << endl;
+            }
+            break;
+            case 9:
+            {
+                // PEA 2
+                // Jan Potocki 2017
+                if(graph != NULL)
+                {
+                    double measureResults[measureNumber], measureResultsDiv[measureNumber];
+                    for(int i = 0; i < measureNumber; i++)
+                    {
+                        measureResults[i] = 0;
+                        measureResultsDiv[i] = 0;
+                    }
+
+                    cout << "Pomiary dla problemu komiwojazera, tabu search" << tabuLength << endl;
+                    cout << "Kadencja: " << tabuLength << endl;
+                    cout << "Kryterium dywersyfikacji: " << tabuIterationsToRestart << " iteracji" << endl;
+
+                    // Petla pomiarowa
+                    for(int krok = 0; krok < measureIterations; krok++)
+                    {
+                        for(int i = 0; i < measureNumber; i++)
+                        {
+                            vector<unsigned> route;
+                            unsigned routeLength;
+
+                            // Bez dywersyfikacji
+                            cout << "Pomiar " << measureTabuStop[i] << " [s] (" << krok + 1 << " z " << measureIterations << " bez dywersyfikacji)..." << endl;
+
+                            route = Graph::travellingSalesmanTabuSearch(*graph, tabuLength, false, tabuIterationsToRestart, measureTabuStop[i], tabuThreadsNumber);
+
+                            routeLength = 0;
+                            for(int j = 1; j < route.size(); j++)
+                                routeLength += graph->getWeight(route.at(j - 1), route.at(j));
+                            measureResults[i] += routeLength;
+
+                            // Z dywersyfikacja
+                            cout << "Pomiar " << measureTabuStop[i] << " [s] (" << krok + 1 << " z " << measureIterations << " z dywersyfikacja)..." << endl;
+
+                            route = Graph::travellingSalesmanTabuSearch(*graph, tabuLength, true, tabuIterationsToRestart, measureTabuStop[i], tabuThreadsNumber);
+
+                            routeLength = 0;
+                            for(int j = 1; j < route.size(); j++)
+                                routeLength += graph->getWeight(route.at(j - 1), route.at(j));
+                            measureResultsDiv[i] += routeLength;
+                        }
+                    }
+
+                    cout << "Opracowywanie wynikow..." << endl;
+
+                    for(int i = 0; i < measureNumber; i++)
+                    {
+                        measureResults[i] = nearbyint(measureResults[i] / measureIterations);
+                        measureResultsDiv[i] = nearbyint(measureResultsDiv[i] / measureIterations);
+                    }
+
+                    cout << "Zapis wynikow..." << endl;
+
+                    ofstream salesmanToFile;
+                    salesmanToFile.open("wyniki-komiwojazer-ts.txt");
+                    salesmanToFile << "czas - bez dywersyfikacji - z dywersyfikacja" << endl;
+                    for(int i = 0; i < measureNumber; i++)
+                    {
+                        salesmanToFile << measureTabuStop[i] << " [s]: " << (int)measureResults[i] << ' ' << (int)measureResultsDiv[i] << endl;
+                    }
+                    salesmanToFile.close();
+
+                    cout << "Gotowe!" << endl;
+                    cout << endl;
+                }
+                else
+                {
+                    cout << "+++ MELON MELON MELON +++ Brak zaladowanych danych +++" << endl;
+                    cout << endl;
+                }
+            }
+            break;
+            case 10:
+            {
+                // Jan Potocki 2017
+                string filename, fileInput;
+                ifstream salesmanDataFile;
+
+                cout << "Podaj nazwe pliku: ";
+                cin >> filename;
+
+                salesmanDataFile.open(filename.c_str());
+                if(salesmanDataFile.is_open())
+                {
+                    do
+                        salesmanDataFile >> fileInput;
+                    while(fileInput != "DIMENSION:");
+
+                    salesmanDataFile >> fileInput;
+                    int vertex = stoi(fileInput);
+
+                    do
+                        salesmanDataFile >> fileInput;
+                    while(fileInput != "EDGE_WEIGHT_FORMAT:");
+
+                    salesmanDataFile >> fileInput;
+                    if(fileInput == "FULL_MATRIX")
+                    {
+                        if(graph != NULL)
+                            delete graph;
+
+                        if(useListGraph)
+                            graph = new ListGraph(vertex);
+                        else
+                            graph = new ArrayGraph(vertex);
+
+                        do
+                            salesmanDataFile >> fileInput;
+                        while(fileInput != "EDGE_WEIGHT_SECTION");
+
+                        for(int i = 0; i < vertex; i++)
+                        {
+                            for(int j = 0; j < vertex; j++)
+                            {
+                                salesmanDataFile >> fileInput;
+                                int weight = stoi(fileInput);
+
+                                if(i != j)
+                                    graph->addEdge(i, j, weight);
+                            }
+                        }
+
+                        cout << "Wczytano - liczba wierzcholkow: " << vertex << endl;
+                        cout << endl;
+                    }
+                    else
+                    {
+                        cout << "+++ MELON MELON MELON +++ Nieobslugiwany format " << fileInput << " +++" << endl;
+                        cout << endl;
+                    }
+
+                    salesmanDataFile.close();
+                }
+                else
+                {
+                    cout << "+++ MELON MELON MELON +++ Brak pliku " << filename << " +++" << endl;
+                    cout << endl;
+                }
+            }
+            break;
+            case 11:
+            {
+                // Jan Potocki 2017
+                string filename, fileInput;
+                vector<float> xCoord, yCoord;
+                ifstream salesmanDataFile;
+
+                cout << "Podaj nazwe pliku: ";
+                cin >> filename;
+
+                salesmanDataFile.open(filename.c_str());
+                if(salesmanDataFile.is_open())
+                {
+                    do
+                        salesmanDataFile >> fileInput;
+                    while(fileInput != "DIMENSION:");
+
+                    salesmanDataFile >> fileInput;
+                    int vertex = stoi(fileInput);
+
+                    do
+                        salesmanDataFile >> fileInput;
+                    while(fileInput != "EDGE_WEIGHT_TYPE:");
+
+                    salesmanDataFile >> fileInput;
+                    if(fileInput == "EUC_2D")
+                    {
+                        if(graph != NULL)
+                            delete graph;
+
+                        if(useListGraph)
+                            graph = new ListGraph(vertex);
+                        else
+                            graph = new ArrayGraph(vertex);
+
+                        do
+                            salesmanDataFile >> fileInput;
+                        while(fileInput != "NODE_COORD_SECTION");
+
+                        for(int i = 0; i < vertex; i++)
+                        {
+                            salesmanDataFile >> fileInput;
+
+                            salesmanDataFile >> fileInput;
+                            xCoord.push_back(stof(fileInput));
+
+                            salesmanDataFile >> fileInput;
+                            yCoord.push_back(stof(fileInput));
+                        }
+
+                        // To daloby sie zrobic optymalniej (macierz symetryczna), ale nie chce mi sie ...
+                        // ..wole zoptymalizować czas programowania ;-)
+                        for(int i = 0; i < vertex; i++)
+                        {
+                            for(int j = 0; j < vertex; j++)
+                            {
+                                if(i != j)
+                                {
+                                    float xDiff = xCoord.at(i) - xCoord.at(j);
+                                    float yDiff = yCoord.at(i) - yCoord.at(j);
+                                    int weight = nearbyint(sqrt(xDiff * xDiff + yDiff * yDiff));
+
+                                    graph->addEdge(i, j, weight);
+                                }
+                            }
+                        }
+
+                        cout << "Wczytano - liczba wierzcholkow: " << vertex << endl;
+                        cout << endl;
+                    }
+                    else
+                    {
+                        cout << "+++ MELON MELON MELON +++ Nieobslugiwany format " << fileInput << " +++" << endl;
+                        cout << endl;
+                    }
+
+                    salesmanDataFile.close();
+                }
+                else
+                {
+                    cout << "+++ MELON MELON MELON +++ Brak pliku " << filename << " +++" << endl;
+                    cout << endl;
+                }
+            }
+            break;
+            case 0:
+            {
+            }
+            break;
+            default:
+            {
+                cout << "Nieprawidlowy wybor" << endl;
+                cout << endl;
+            }
+        }
+    } while(salesmanSelection != 0);
+
+    if(graph != NULL)
+        delete graph;
+
+    cout << "Konczenie..." << endl;
+    // Easter egg :-P
+    cout << '"' << "Myslak Stibbons niepokoil sie HEX-em." << endl;
+    cout << "Nie wiedzial, jak dziala, chociaz wszyscy uwazali, ze wie." << endl;
+    cout << "Oczywiscie, calkiem niezle orientowal sie w niektorych elementach;" << endl;
+    cout << "byl tez pewien, ze HEX mysli o problemach, przeksztalcajac je" << endl;
+    cout << "w liczby i mielac ..." << '"' << endl;
+    cout << "(Terry Pratchett, " << '"' << "Wiedzmikolaj" << '"' << ", tlumaczenie Piotr Cholewa)" << endl;
+    cout << endl;
+
+    return 0;
+}