Cod sursa(job #1300285)

Utilizator bence21Bako Bence bence21 Data 24 decembrie 2014 12:04:38
Problema Algoritmul lui Dijkstra Scor 20
Compilator cpp Status done
Runda Arhiva educationala Marime 0.73 kb
#include<fstream>
using namespace std;
long n,m,kov[1000000],k=1,h=1;
int s[50001],t[5000][5000];
int main()
{
    ifstream f("dijkstra.in");
    ofstream g("dijkstra.out");
    f>>n>>m;
    long i,a,b,c;
    for(i=2;i<=n;i++)
        s[i]=1001;
    for(i=1;i<=m;i++)
    {
        f>>a>>b>>c;
        t[a][b]=c;
    }
    kov[k]=1;
    for(;k<=h;k++)
    for(i=1;i<=n;i++)
    {
        if(t[kov[k]][i]!=0)
        {
            if(s[kov[k]]+t[kov[k]][i]<s[i])
            {
                s[i]=s[kov[k]]+t[kov[k]][i];
                kov[++h]=i;
            }
        }
    }
    for(i=2;i<=n;i++)
        if(s[i]==1001)
        g<<0<<" ";
    else g<<s[i]<<" ";
    f.close();
    g.close();
    return 0;
}