#include<stdio.h>
int main()
{
    char ch;
    scanf("%c",&ch);
    if( isalpha (ch)) {
     printf("Alphabet");
     
    }
     else if ( isdigit (ch))
     {
         printf("Digit");
         
     }
     else {
         
     printf("Special Character");  
         
     }
     return 0;
}