#include<stdio.h>
#include<ctype.h>
void main()
{ 
    char ch;
    scanf("%c",&ch);
    if (ch.isalpha(ch))
    {
        printf("Alphabet");
    }
    else if(ch.isdigit(ch))
    {
        printf("Digit");
    }
    else 
    {
        printf("Special Character");
    }
}