Cod sursa(job #2417571)

Utilizator WoodsOfYpresAdora Vivos WoodsOfYpres Data 30 aprilie 2019 14:18:50
Problema Algoritmul lui Dijkstra Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.15 kb
#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

vector <int> graf[50005];
vector <int> grafc[50005];
int dist[50005];
int viz[50005];

void dijkstra(int x,int N)
{
    int i,j,minim,dmin,lim;
    for(i=1;i<=N-1;i++)
    {
        dmin=1000000000;
        for(j=1;j<=N;j++)
        {
            if(viz[j]==0 && dist[j]<dmin)
            {
                minim=j;
                dmin=dist[j];
            }
        }
        viz[minim]=1;
        lim=graf[minim].size();
        for(j=0;j<lim;j++)
        {
            if(dist[graf[minim][j]]>dist[minim]+grafc[minim][j])
                dist[graf[minim][j]]=dist[minim]+grafc[minim][j];
        }
    }
}

int main()
{
    int N,M,x,y,i,c;
    ifstream f("dijkstra.in");
    ofstream g("dijkstra.out");
    f>>N>>M;
    for(i=1;i<=N;i++)
    {
        f>>x>>y>>c;
        graf[x].push_back(y);
        grafc[x].push_back(c);
    }
    for(i=2;i<=N;i++)
        dist[i]=1000000000;
    dijkstra(1,N);
    for(i=2;i<=N;i++)
        if(dist[i]==1000000000)
        dist[i]=0;
    for(i=2;i<=N;i++)
        g<<dist[i]<<" ";
    return 0;
}