#include <stdio.h>
int 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");
}
   return 0;
}