#include<stdio.h>
#include<ctype.h>
int main()
{
    char ch; 
    scanf("%c,&ch");
    if(isalpha(ch))
    {
        printf("Alphabet");
    }
    if(isdigit(ch))
    {
        printf("Digit");
    }
    else
    {
        printf("Special Character");
    }
    return 0;
}