Cod sursa(job #3368115)

Utilizator NegoLuisNegoita Luis NegoLuis Data 13 octombrie 2026 11:28:09
Problema BFS - Parcurgere in latime Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.84 kb
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>
using namespace std;
int main() {
    ifstream fin("bfs.in");
    ofstream fout("bfs.out");

    int n, m, s;
    fin>>n>>m>>s;

    vector<vector<int>> adj(n + 1);
    for (int i = 0; i < m; ++i) {
        int u, v;
        fin >> u >> v;
        adj[u].push_back(v);
    }

    vector<int> dist(n + 1, -1);
    queue<int> q;

    dist[s] = 0;
    q.push(s);

    while (!q.empty()) {
        int u = q.front();
        q.pop();

        for (int v : adj[u]) {
            if (dist[v] == -1) {
                dist[v] = dist[u] + 1;
                q.push(v);
            }
        }
    }

    for (int i = 1; i <= n; ++i) {
        fout << dist[i] << " ";
    }
    
    fout << "\n";

    fin.close();
    fout.close();

    return 0;
}