Cod sursa(job #2811895)

Utilizator ptr22222Petru Popescu ptr22222 Data 3 decembrie 2021 15:03:04
Problema Floyd-Warshall/Roy-Floyd Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 3.17 kb
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
#include <stack>
#include <algorithm>

using namespace std;

ifstream in("royfloyd.in");
ofstream out("royfloyd.out");

const int nmax = 101;
const int inf = 1001;
class Graf
{
private:
    bool orientat;
    int nrNoduri;
    vector <int> listaAdiacenta[nmax];
    vector <pair <int, int>> listaAdiacentaCost[nmax];
public:
    Graf(int nrNoduri = 0, bool orientat = false);
    void adaugaMuchie(int, int);
    void adaugaMuchieCost(int, int, int);
    void citireMuchii(int);
    void citireMuchiiCost(int);
    vector<int> BFS(int);
    void DFS(int, bool*);
    int nrComponenteConexe();
    void DFSStiva(int nodcurent, bool *, stack<int> &);
    void sortareTopologica();
    void TarjanCTC(int&, int, int*, int*, bool*, stack <int> &, vector<vector<int>> &);
    void CTC();
    void TarjanBC(int&, int, int, int*, int*, stack <int>&, vector<vector<int>>&);
    void BC();
    void TarjanMC(int&, int, int, int*, int*, vector<pair<int,int>>&);
    void MC();
    vector <int> citireHakimi();
    bool Hakimi(vector <int>);
    vector <int> Dijkstra(int);
    pair<int, vector <pair <int, int>>> Prim(int);
    vector <int> BellmanFord(int);
    void reuniune(int, int, vector<int>&, vector<int>&);
    int gasire(int, vector<int>&);
    void verifica(int, int, vector<int>&);
    void paduri();
    void RoyFloyd(int matriceDrumuri[][nmax]);
    void rezolvareRoyFloyd();
};

Graf :: Graf(int nrNoduri, bool orientat) : nrNoduri(nrNoduri), orientat(orientat)
{
    this->nrNoduri = nrNoduri;
    this->orientat = orientat;
}

void Graf:: adaugaMuchie(int nod1, int nod2)
{
    listaAdiacenta[nod1].push_back(nod2);
}

void Graf::adaugaMuchieCost(int nod1, int nod2, int cost)
{
    listaAdiacentaCost[nod1].push_back(make_pair(nod2, cost));
}

void Graf::citireMuchii(int nrMuchii)
{
    int nod1, nod2;
    for(int i = 0; i < nrMuchii; i++)
    {
        in >> nod1 >> nod2;
        listaAdiacenta[nod1].push_back(nod2);
        if(!orientat)
        {
            listaAdiacenta[nod2].push_back(nod1);
        }
    }
}

void Graf::RoyFloyd(int matriceDrumuri[][nmax])
{
    for(int k = 1; k <= nrNoduri; k++)
    {
        for(int i = 1; i <= nrNoduri; i++)
        {
            for(int j = 1; j <= nrNoduri; j++)
            {
                matriceDrumuri[i][j] = min(matriceDrumuri[i][j], matriceDrumuri[i][k] + matriceDrumuri[k][j]);
            }
        }
    }
}

void Graf::rezolvareRoyFloyd()
{
    int matriceDrumuri[nmax][nmax];
    for(int i = 1; i <= nrNoduri; i++)
    {
        for(int j = 1; j <= nrNoduri; j++)
        {
            in >> matriceDrumuri[i][j];
            if(matriceDrumuri[i][j] == 0 && i != j)
            {
                matriceDrumuri[i][j] = inf;
            }
        }
    }
    RoyFloyd(matriceDrumuri);
    for(int i = 1; i <= nrNoduri; i++)
    {
        for(int j = 1; j <= nrNoduri; j++)
        {
            if(matriceDrumuri[i][j] == inf)
            {
                out << 0 << " ";
                continue;
            }
            out << matriceDrumuri[i][j] << " ";
        }
        out << "\n";
    }
}

int main()
{
    int n;
    in >> n;
    Graf g(n,true);
    g.rezolvareRoyFloyd();
    return 0;
}