Pagini recente » Cod sursa (job #1560030) | Cod sursa (job #32894) | Cod sursa (job #2699098) | Cod sursa (job #1436224) | Cod sursa (job #335488)
Cod sursa(job #335488)
#include <iostream>
#include <vector>
#include <queue>
using namespace std;
#define nmax 100001
int N,M,S;
int sol[nmax];
vector <int> V[nmax];
queue <int> Q;
void bf ()
{
Q.push (S); sol[S]=1;
while (!Q.empty())
{
int i = Q.front(); Q.pop();
for (int j=0; j<V[i].size(); ++j)
{
int x = V[i][j];
if (!sol[x])
{
Q.push(x);
sol[x] = sol[i]+1;
}
}
}
}
int main ()
{
freopen ("bfs.in","r",stdin);
freopen ("bfs.out","w",stdout);
cin>>N>>M>>S;
while (M--)
{
int a,b; cin>>a>>b;
V[a].push_back(b);
}
bf();
for (int i=1; i<=N; ++i) cout<<sol[i]-1<<' ';
return 0;
}