Cod sursa(job #3246759)

Utilizator AlexandraVarutuValexandra AlexandraVarutu Data 4 octombrie 2024 12:31:57
Problema BFS - Parcurgere in latime Scor 50
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.7 kb
#include <fstream>
#include <cstring>
#include <algorithm>
#include <vector>
using namespace std;
ifstream fin("bfs.in");
ofstream fout("bfs.out");
int n,m,st,x,y;
int a[10001][10001];
int q[1000001];
int viz[1000001];
int main()
{
    fin>>n>>m>>st;
    for(int i=1;i<=m;i++){
        fin>>x>>y;
        if(x!=y)
            a[x][y]=1;
    }
    int p,u;
    p=u=1;
    q[p]=st;
    viz[st]=1;
    while(p<=u){
        int k=q[p];
        for(int i=1;i<=n;i++){
            if(a[k][i]==1&&viz[i]==0){
                q[++u]=i;
                viz[i]=viz[k]+1;
            }
        }
        p++;
    }

    for(int i=1;i<=n;i++)
        fout<<viz[i]-1<<" ";


    return 0;
}