Pagini recente » Cod sursa (job #2787296) | Cod sursa (job #2066823) | Cod sursa (job #379081) | Cod sursa (job #1871359) | Cod sursa (job #2131148)
#include <fstream>
#include <cstring>
#include <vector>
using namespace std;
vector <int > v[100002];
ifstream f("bfs.in");
ofstream g("bfs.out");
int n,m,s;
int viz[100002];
void bf(int st)
{
for(int i=0;i<v[st].size();i++)
{
if(viz[v[st][i]]==-1)
{
viz[v[st][i]]=viz[st]+1;
bf(v[st][i]);
}
}
}
int main()
{
int x,y,s;
f>>n>>m>>s;
for(int i=1;i<=m;i++)
{
f>>x>>y;
v[x].push_back(y);
}
for(int i=1;i<=n;i++)
{
viz[i]=-1;
}
viz[s]=0;
bf(s);
for(int i=1;i<=n;i++)
{
g<<viz[i]<<" ";
}
return 0;
}