Cod sursa(job #1592827)

Utilizator ClaudiuHHiticas Claudiu ClaudiuH Data 7 februarie 2016 23:22:14
Problema Algoritmul lui Dijkstra Scor 10
Compilator cpp Status done
Runda Arhiva educationala Marime 1.01 kb
// bellman-ford
#include <iostream>
#include <queue>
#include <fstream>
using namespace std;

ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");

struct nod
{
    int val, cost;
};

vector <nod> grf[50001];
queue <int> coada;

int d[50001];
int n, m, i, a, b, c;
int main()
{
    fin>>n>>m;
    for(i=1; i<=m; i++)
    {
        fin>>a>>b>>c;
        nod act;
        act.val=b;
        act.cost=c;
        grf[a].push_back(act);
    }
    for(i=1; i<=n; i++)
    {
        d[i]=100000;
    }
    coada.push(1); d[1]=0;
    while(!coada.empty())
    {
        int cx=coada.front();
        coada.pop();
        for(i=0; i < grf[cx].size(); i++)
        {
            if(d[cx] + grf[cx][i].cost < d[grf[cx][i].val])
            {
                coada.push(grf[cx][i].val);
                d[grf[cx][i].val] = d[cx]+grf[cx][i].cost;
            }
        }
    }
    for(i=2; i<=n; i++)
    {
        if(d[i]!=100000)
            fout<<d[i]<<" ";
        
    }
}