#include<stdio.h>
#include<ctype.h>
int main (void) {
    char ch;
    if(scanf("%c", &ch) !=1 return 0;
    if(isalpha((unsigned char)ch)) {
        printf("Alphabet\n");
    }else if (isdigit((unsigned char)ch)) 
    {
        printf("Digit\n");
    }else{
        printf("Special Charater\n");
    }
    return 0;
}