Pagini recente » Cod sursa (job #2396598) | Cod sursa (job #502497) | Cod sursa (job #1762725) | Cod sursa (job #2201863) | Cod sursa (job #2919635)
#include <fstream>
#include <vector>
#include <queue>
using namespace std;
ifstream in("bfs.in");
ofstream out("bfs.out");
int dist[100005];
vector<int>g[100005];
queue<int>q;
int lee(int start)
{
dist[start]=1;
q.push(start);
while(!q.empty())
{
int varf=q.front();
for(int i=0;i<g[varf].size();i++)
{
int vecin;
vecin=g[varf][i];
if(dist[vecin]==0)
{
dist[vecin]=dist[varf]+1;
q.push(vecin);
}
}
q.pop();
}
}
int main()
{
int n,m,s;
in>>n>>m>>s;
for(int i=1;i<=m;i++)
{
int x,y;
in>>x>>y;
g[x].push_back(y);
}
lee(s);
for(int i=1;i<=n;i++)
out<<dist[i]-1<<' ';
return 0;
}