Cod sursa(job #3305590)

Utilizator lucaje123Vartolomei Luca lucaje123 Data 3 august 2025 10:34:20
Problema BFS - Parcurgere in latime Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.73 kb
#include <fstream>
#include <algorithm>
#include <vector>
#include <queue>
using namespace std;

ifstream cin("bfs.in");
ofstream cout("bfs.out");

int n, m, s, x, y, dist[100005];
vector<int> vec[100005];

void bfs(int sursa){
    queue<int> q;
    q.push(sursa);
    while(!q.empty()){
        int nod=q.front();
        q.pop();
        for(auto vecin:vec[nod]){
            if(dist[vecin]==0){
                dist[vecin]=dist[nod]+1;
                q.push(vecin);
            }
        }
    }
}

int main(){
    cin>>n>>m>>s;
    for(int i=1;i<=m;i++){
        cin>>x>>y;
        vec[x].push_back(y);
    }
    dist[s]=1;
    bfs(s);
    for(int i=1;i<=n;i++){
        cout<<dist[i]-1<<" ";
    }
}