Cod sursa(job #2384839)

Utilizator VersinMadalinaVERSIN IONELA MADALINA VersinMadalina Data 21 martie 2019 11:10:08
Problema BFS - Parcurgere in latime Scor 50
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.97 kb
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>

using namespace std;
vector<int> list[100000];
queue <int >q;
bool visit[10000];
int dist[100000];
int n,m,s;

void bfs(int node)
{
    int i;
    q.push(node);
    visit[node]=1;
    dist[node]=1;

    while(!q.empty())
    {
        int t=q.front();
          q.pop();
          for(i=0;i<list[t].size();i++)
          {
              if(!visit[list[t][i]])

              {
                  q.push(list[t][i]);
                  visit[list[t][i]]=1;
                  dist[list[t][i]]=dist[t]+1;
               }
          }

    }


}
int main()
{
    int i,x,y;
    ifstream cin("bfs.in");
    ofstream cout("bfs.out");
    cin>>n>>m>>s;

    for(i=1;i<=m;i++)
        {
            cin>>x>>y;
            list[x].push_back(y);
        }
        bfs(s);
        for(i=1;i<=n;i++)
            cout<<dist[i]-1<<" ";
    return 0;int t=q.front();
     q.pop();
}