#include<stdio.h>
#include<string.h>
#include<stdlib.h>

int main()
{
    char subject[110][25],due[25];
    int D,t,n,day[110],i,j,flag,ca=0,x,y;
    scanf("%d",&t);
    for(x=0; x<t; x++)
    {
        scanf("%d",&n);
        i = 0;
        for(y=0; y<n; y++)
        {
            scanf("%s %d",subject[i],&day[i]);
            i++;
        }
        scanf("%d",&D);
        scanf("%s",due);
        flag = 0;
        printf("Case %d: ",++ca);
        for(j=0; j<i; j++)
        {
            if( strcmp(due,subject[j]) == 0)
            {
                flag = 1;
                if( day[j] < D )
                {
                    printf("Yesss\n");
                }
                else if( day[j] <= (D+5) )
                {
                    printf("Late\n");
                }
                else
                {
                    printf("Do your own homework!\n");
                }
                break;
            }
        }
        if(flag == 0)
        {
            printf("Do your own homework!\n");
        }
    }
    return 0;
}