Cod sursa(job #2267339)

Utilizator andrei42Oandrei42O andrei42O Data 23 octombrie 2018 15:51:55
Problema BFS - Parcurgere in latime Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.64 kb
#include <bits/stdc++.h>
#define FISIERE 1
using namespace std;
#if FISIERE
string file_name="bfs";
ifstream f(file_name+".in");
ofstream g(file_name+".out");
#endif
const int N = 100010;
int n,m,nod,i,j,d[N];
vector<int> v[N];
queue<int> q;
int main()
{
    f>>n>>m>>nod;
    for(; m; m--)
    {
        f>>i>>j;
        v[i].push_back(j);
    }
    q.push(nod);d[nod]=1;
    while(q.size())
    {
        nod=q.front();
        q.pop();
        for(auto vec:v[nod])
        if(!d[vec])
        {
            q.push(vec);d[vec]=d[nod]+1;
        }
    }
    for(int i=1;i<=n;i++)
        g<<d[i]-1<<' ';
    return 0;
}