#include<stdio.h>
#include<iostream>
#include<map>
 
using namespace std;
 
map<string,int>mp;
 
int main()
{
    int test,i,D,a,tc,subject,finish;
    char s[20];
    scanf("%d",&test);
    for(tc=1;tc<=test;tc++)
    {
        scanf("%d",&subject);
        for(i=1;i<=subject;i++)
        {
            scanf("%s %d",s,&finish);
            mp[s]=finish;
        }
        scanf("%d",&D);
        scanf("%s",s);
        if(mp.find(s)!=mp.end() && mp[s]<=D)
        {
            printf("Case %d: Yesss\n",tc);
        }
        else if(mp.find(s)!=mp.end() && mp[s]<=D+5)
        {
            printf("Case %d: Late\n",tc);
        }
        else
        {
            printf("Case %d: Do your own homework!\n",tc);
        }
        mp.clear();
    }
 
    return 0;
}