Cod sursa(job #2919635)

Utilizator velciu_ilincavelciu ilinca velciu_ilinca Data 18 august 2022 15:21:18
Problema BFS - Parcurgere in latime Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.82 kb
#include <fstream>
#include <vector>
#include <queue>
using namespace std;
ifstream in("bfs.in");
ofstream out("bfs.out");
int dist[100005];
vector<int>g[100005];
queue<int>q;
int lee(int start)
{
    dist[start]=1;
    q.push(start);
    while(!q.empty())
    {
        int varf=q.front();
        for(int i=0;i<g[varf].size();i++)
        {
            int vecin;
            vecin=g[varf][i];
            if(dist[vecin]==0)
            {
                dist[vecin]=dist[varf]+1;
                q.push(vecin);
            }
        }
        q.pop();
    }
}
int main()
{
    int n,m,s;
    in>>n>>m>>s;
    for(int i=1;i<=m;i++)
    {
        int x,y;
        in>>x>>y;
        g[x].push_back(y);
    }
    lee(s);
    for(int i=1;i<=n;i++)
        out<<dist[i]-1<<' ';
    return 0;
}