Cod sursa(job #2373486)

Utilizator ChelaruGabrielaChelaru Gabriela ChelaruGabriela Data 7 martie 2019 13:45:14
Problema BFS - Parcurgere in latime Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1 kb
#include <iostream>
#include <fstream>
#include <vector>
using namespace std;
ifstream fin("bts.in");
ofstream fout("bts.out");
vector <int> graf[50];
int main()
{
    int n, m, s,x,y;
    fin>>n>>m>>s;

    for(int i=0;i<m;i++)
        {
            fin>>x;
            fin>>y;
            graf[x].push_back(y);
        }

    int coada[100007];

    int left=1,right=1;
    int elem;
    int dis[100003],viz[100003];
    for(int i=0;i<=n; i++)
    {
        dis[i]=-1;
        viz[i]=0;
        coada[i]=0;
    }
    coada[++right]=s;
    viz[s] = 1;
    dist[s] = 0;
    int vecin;
    while(left<=right)
    {
        int index=coada[left];
        left++;
        int lim=graf[index].size();
        for(int i=0;i<lim;i++)
            if(!(viz[vecin]))
            {
                viz[vecin]=1;
                dis[vecin]=dis[index] + 1;
                coada[++right]=vecin;
            }
    }
    for(int i=1;i<=n;i++)
        fout<<dis[i]<<' ';

    return 0;
}