Cod sursa(job #2665171)

Utilizator TraianVVisan Traian-Dimitrie TraianV Data 30 octombrie 2020 11:16:24
Problema BFS - Parcurgere in latime Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.63 kb
#include <fstream>
#include <vector>
#include <queue>
using namespace std;
ifstream f("date.in");
ofstream g("date.out");
vector<int> v[100010];
queue<int> q;
int n,m,s,d[100010],x,y,i;
int main()
{
    f>>n>>m>>s;
    for(i=0;i<m;i++)
    {
        f>>x>>y;
        v[x].push_back(y);
    }
    d[s]=1;
    q.push(s);
    while(q.size())
    {
        x=q.front();
        q.pop();
        for(auto j:v[x])
            if(!d[j])
            {
                d[j]=d[x]+1;
                q.push(j);
            }
    }
    for(i=1;i<=n;i++)
        g<<d[i]-1<<' ';
    f.close();
    g.close();
    return 0;
}