#include<stdio.h>
int main ()
{
  char ch;
  scanf("%c", &ch);
  if ((ch >= 'A' && ch <= '9') || (ch >='a' && <= 'Z'))
  {
      printf("Alphabet");
  }
  else if ( ch >='0' && ch <= '9')
  {
      printf("Digit");
  }
  else
  {
      printf("Special Character");
  }
  return 0;
}