#include <stdio.h>
int main ()
{
    int n,t;
        scanf ("%d\n",&n);
    for (int i=1;i<=n;i++)
    {scanf ("%d",&t);
    if (t>=0&&t<=100)
        {
    t=t/10;
    switch (t)
  {
    case 10:printf ("A\n");
    break;
    case 9:printf ("A\n");
    break;
    case 8:printf ("B\n");
    break;
    case 7:printf ("C\n");
    break;
    case 6:printf ("D\n");
    break;
    default:printf ("E\n");
    break;
  }
        }
    else {printf ("No answer!\n");}
    }
        return 0;
}