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