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