Pagini recente » Cod sursa (job #1584629) | Cod sursa (job #2382186) | Cod sursa (job #1372942) | Cod sursa (job #2099137) | Cod sursa (job #1545596)
#include <cstdio>
#include <vector>
#include <queue>
#include <algorithm>
using namespace std;
vector<int> vecini[100005];
queue<int> q;
int vizitat[100005];
int n,m,x,y,s;
int main()
{
freopen("bfs.in","r",stdin);
freopen("bfs.out","w",stdout);
scanf("%d %d %d",&n,&m,&s);
for(int i = 1; i <= m; i++){
scanf("%d %d",&x,&y);
vecini[x].push_back(y);
}
/**BFS*/
q.push(s);
vizitat[s] = 1;
while(!q.empty()){
int curent = q.front();
for(int i = 0; i < vecini[curent].size(); i++){
if(vizitat[vecini[curent][i]] == 0){
vizitat[vecini[curent][i]] = vizitat[curent] + 1;
q.push(vecini[curent][i]);
}
}
q.pop();
}
for(int i = 1; i <= n; i++){
printf("%d ",vizitat[i] - 1);
}
return 0;
}