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