Cod sursa(job #2035848)
| Utilizator | Data | 9 octombrie 2017 21:26:01 | |
|---|---|---|---|
| Problema | BFS - Parcurgere in latime | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva educationala | Marime | 0.67 kb |
#include <bits/stdc++.h>
using namespace std;
ifstream fin("bfs.in");
ofstream fout("bfs.out");
int main()
{
int N,M,S,i,j;
fin>>N>>M>>S;
vector<int> dist(N+10);
vector<vector<int>> v(N+10);
queue<int> q;
dist[S]=1;
for(;M;M--)
{
fin>>i>>j;
v[i].push_back(j);
}
q.push(S);
while(!q.empty())
{
int now = q.front();
q.pop();
for(int i=0;i<v[now].size();i++)
{
if(!dist[v[now][i]])
{
q.push(v[now][i]);
dist[v[now][i]]=dist[now]+1;
}
}
}
for(int i=1;i<=N;i++)
fout<<dist[i]-1<<' ';
return 0;
}
