#include<bits/stdc++.h>
using namespace std;
#define mx 1000000
bool vis[mx];
int n,e,cnt;
vector<int>v[mx];
int dis[mx];
map<int,int>m;
map<int,int>::iterator it;
int  bfs(int sn,int z)
{
    int i,j;
    for(it=m.begin();it!=m.end();it++){
        vis[it->first]=false;
        dis[it->first]=5000000;
    }
    dis[sn]=0;
    vis[sn]=true;
    queue<int >q;
    q.push(sn);
    while(!q.empty()){
        int x=q.front();
        q.pop();
        for(i=0;i<v[x].size();i++){
            if(vis[v[x][i]]==false){
                dis[v[x][i]]=dis[x]+1;
                vis[v[x][i]]=true;
                q.push(v[x][i]);
            }
        }
    }
    return cnt;
}
int main()
{
    int i,j,a,b,p,k=0,l=0,c=0;
    while(1){
        p=0;
        cin>>e;
        if(e==0) break;
        for(i=0;i<e;i++){
            int n1,n2;
            cin>>n1>>n2;
            l=m[n1]++;
            if(l==0) p++;
            k=m[n2]++;
            if(k==0) p++;
            v[n1].push_back(n2);
            v[n2].push_back(n1);
        }

        while(1){
            c++;
            cnt=0;
            scanf("%d%d",&a,&b);
            if(a==0 && b==0) break;
            bfs(a,p);
            for(it=m.begin();it!=m.end();it++){
                if(dis[it->first]>b) cnt++;
            }
            cout<<"Case "<<c<<": "<<cnt<<" nodes not reachable from node "<<a<<" with TTL = "<<b<<"."<<endl;
        }
        for(it=m.begin();it!=m.end();it++){
            v[it->first].clear();
        }
         m.clear();
         cout<<endl;
    }

}