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