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