Cod sursa(job #2423418)

Utilizator rebeca.d31Diaconu Rebeca-Mihaela rebeca.d31 Data 21 mai 2019 12:53:25
Problema BFS - Parcurgere in latime Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.87 kb
#include <iostream>
#include <fstream>
#include <vector>
#include <queue>

using namespace std;
vector<int> list[100001];
queue <int >q;
bool visit[100001];
int dist[100001];
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();
}