Cod sursa(job #3334198)

Utilizator todoranstefaniaTodoran Stefania todoranstefania Data 16 ianuarie 2026 18:54:08
Problema BFS - Parcurgere in latime Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.82 kb
#include <iostream>
#include <vector>
#include <queue>
#include <fstream>
using namespace std;
ifstream fin("bfs.in");
ofstream fout("bfs.out");
vector<int> v[100005];
int dist[100005];
int main() {
    int n, m, s;
    fin>>n>>m>>s;
    for(int i=1; i<=n; i++) {
        dist[i]=-1;
    }
    for(int i=0; i<m; i++) {
        int x, y;
        fin>>x>>y;
        v[x].push_back(y);
    }

    queue<int>q;
    q.push(s);
    dist[s]=0;
    while(!q.empty()) {
        int nod=q.front();
        q.pop();
        for (int i=0; i<v[nod].size(); i++) {
            int vecin=v[nod][i];
            if(dist[vecin]==-1) {
                dist[vecin]=dist[nod]+1;
                q.push(vecin);
            }
        }
    }
    for(int i=1; i<=n; i++) {
        fout<<dist[i]<<" ";
    }
    return 0;
}