#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;
        
    
    
}