// editor4

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