#include<stdio.h>
int main(){
    char ch;
    
    scanf("%c",&ch);
    
    if (ch >= 'a' && ch <= 'z') || (ch >= "A" && ch <= 'z'){
        printf("Alphabet");
    }
    else if(ch >= '0' && ch <= '9'){
        printf("Digit");
    }
    else{
        printf("Special Character");
    }
    return 0;
}