Cod sursa(job #2779567)

Utilizator BlaugranasEnal Gemaledin Blaugranas Data 4 octombrie 2021 11:06:58
Problema BFS - Parcurgere in latime Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.44 kb
#include<bits/stdc++.h>
using namespace std;
ifstream f("bfs.in");
ofstream g("bfs.out");
vector<int> L[100001];
int v[100001],c[100001],n,p,u,s,x,y,m;
int main()
{
    f>>n>>m>>s,L.resize(n+1);
    while(m--)
        f>>x>>y,L[x].push_back(y);
    for(v[s]=p=u=1,c[1]=s;p<=u;++p)
        for(auto a:L[c[p]])
            if(!v[a])
                c[++u]=a,v[a]=v[c[p]]+1;
    for(p=1;p<=n;++p)
        g<<v[p]-1<<' ';
    return 0;
}