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