#include <stdio.h>
#include <ctype.h>
int main()
{
    char ch;
    scanf("%c", &ch);
    if(isalpha(ch)) {
    printf("Alphabet");
    }
    else if (isdigit(ch)) {
        printf("Digit");
    }
    else {
        printf("Special character");
    }
    return0;
    
}