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