#include<stdio.h>
#include<ctype>
void determineCT(char ch){
    if (isdigit(ch)){
        printf("Digit\n");
    }else if(isalpha(Ch)) {
        char lower_ch=tplower(ch);
        if (lower_ch == 'a' || lower_ch =='e' || lower_ch == 'i' || lower_ch == 'o' || lower_ch == 'u'){
            printf("Alphabet\n");
        }else{
            printf("Alphabet\n");
        }
    }else {
        printf("Special character\n");
    }
}
int main(){
    char ch;
    scanf("%c", &ch);
    determineCT(ch);
    return 0;
}