Cod sursa(job #2968604)

Utilizator gabriel.9619Gabriel Stefan Tita gabriel.9619 Data 21 ianuarie 2023 16:54:11
Problema Algoritmul lui Dijkstra Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.03 kb
#include <fstream>
#define INF 2000000000
#include <vector>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");

struct muchie{
    int x, cost;
};

int d[50001], viz[50001];
vector <muchie> l[50001];

int main()
{
    int n, i, m, x, y, c, j, p;
    fin>>n>>m;
    for(i=1;i<=m;i++)
    {
        fin>>x>>y>>c;
        l[x].push_back({y, c});
    }
    for(i=1;i<=n;i++)
    {
        d[i]=INF;
    }
    d[1]=0;
    int minn;
    for(i=1;i<=n;i++)
    {
        minn=INF;
        p=-1;
        for(j=1;j<=n;j++)
        {
            if(d[j]<minn&&viz[j]==0)
            {
                minn=d[j];
                p=j;
            }
        }
        if(minn==INF)
        {
            break;
        }
        viz[p]=1;
        for(j=0;j<l[p].size();j++)
        {
            if(d[l[p][j].x]>d[p]+l[p][j].cost)
            {
                d[l[p][j].x]=d[p]+l[p][j].cost;
            }
        }
    }
    for(i=2;i<=n;i++)
    {
        fout<<d[i]<<" ";
    }
}