Cod sursa(job #3333506)

Utilizator G3K0Airinei Gabriel Vlad G3K0 Data 13 ianuarie 2026 19:51:54
Problema BFS - Parcurgere in latime Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.77 kb
#include <bits/stdc++.h>

using namespace std;
ifstream f("bfs.in");
ofstream g("bfs.out");
const int Nmax=1e5+5;
vector<int> l[Nmax];
int v[Nmax];
void bfs (int x,int n)
{
    int s=x;
    queue <int> q;
    q.push(x);
    v[x]=1;

    while(!q.empty())
    {
        x=q.front();
        q.pop();
        for(auto it : l[x])
            if(v[it]==0)
            {
                q.push(it);
                v[it]=v[x]+1;

            }



    }
    for(int i=1; i<=n; i++)
        if(i==s)
            g<<0<<' ';
        else
                g<<v[i]-1<<' ';






}
int main()
{
    int n,m,s;
    f>>n>>m>>s;
    while(m--)
    {

        int x,y;
        f>>x>>y;
        l[x].push_back(y);

    }
    bfs(s,n);
    return 0;
}