#include <stdio.h>
void main ()
{
char ch;
scanf("%c",&ch);

if((ch>='A'&&ch<='Z')||(ch>='a'&&ch<='z'))
  {
    printf("Alphabet");
  }
else if(ch>='0'&&ch<='9'){
  {
    printf("Digit");
  }
  else
  {
    printf("Special Character");
  }
}