#include<stdio.h>
int main()
{
    int 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;
}