Cod sursa(job #3343333)

Utilizator cosmin_90Drignei Cosmin-Cristian cosmin_90 Data 26 februarie 2026 23:21:00
Problema Algoritmul lui Dijkstra Scor 10
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.08 kb
#include <fstream>
#include <vector>
#include <set>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
const int NMAX=5e4;
int n,m;
int x,y,c;
vector<pair<int,int>>v[NMAX];
int dist[NMAX];
int main(){
    fin>>n>>m;
    for(int i=0;i<m;i++){
        fin>>x>>y>>c;
        v[x].push_back({y,c});
    }
    for(int i=0;i<NMAX;i++){
        dist[i]=1e6;
    }
    set<pair<int,int>> vecini;//set de pereci de distanta si nod
    vecini.insert({0,1});
    dist[1] = 0;
    while(!vecini.empty()){
        int cost=vecini.begin()->first;
        int nod=vecini.begin()->second;
        vecini.erase(vecini.begin());
        for(int i=0;i<v[nod].size();i++){
            int vecin=v[nod][i].first;
            int cost=v[nod][i].second;
            if(dist[vecin] > dist[nod] + cost){
                vecini.erase({dist[vecin], vecin});
                dist[vecin] = cost + dist[nod];
                vecini.insert({dist[vecin], vecin});
            }
        }
    }
    for(int i=2;i<=n;i++){
        fout<<dist[i]<<' ';
    }
    return 0;
}