Pagini recente » Cod sursa (job #1518369) | Cod sursa (job #919763) | Cod sursa (job #3209716) | Cod sursa (job #2502537) | Cod sursa (job #3005160)
#include <fstream>
#include <vector>
using namespace std;
ifstream in("bfs.in");
ofstream out("bfs.out");
const int N=100000 + 2;
int n, m, s, v[N];
vector <int> vec[N];
void bfs(int nd, int cnt){
v[nd] = cnt;
vector <int> la;
for(auto i: vec[nd] ){
if(v[i] == 0){
v[i] = cnt;
la.push_back(i);
}
}
for(auto i: la){
bfs(i, cnt+1);
}
}
int main()
{
in >> n >> m >> s;
for(int i=1; i<=m; i++){
int x, y;
in >> x >> y;
vec[x].push_back(y);
}
bfs(s, 1);
for(int i=1; i<=n; i++){
out<< v[i] - 1 << " ";
}
return 0;
}