import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.StringTokenizer;
class Main {
public static void main (String [] args) throws Exception {
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
int testCaseCount=Integer.parseInt(br.readLine());
for (int testCase=1;testCase<=testCaseCount;testCase++) {
int c=Integer.parseInt(br.readLine());
HashMap<String,Integer> map=new HashMap<>();
for (int i=0;i<c;i++) {
StringTokenizer st=new StringTokenizer(br.readLine());
map.put(st.nextToken(), Integer.parseInt(st.nextToken()));
}
int d=Integer.parseInt(br.readLine());
String target=br.readLine();
if (!map.containsKey(target) || map.get(target)>d+5) System.out.println("Case "+testCase+": Do your own homework!");
else if (map.get(target)>d) System.out.println("Case "+testCase+": Late");
else System.out.println("Case "+testCase+": Yesss");
}
}
}
