// editor4
#include<stdio.h>
#include<ctype.h>
int main()
{
    char ch;
    scanf("%c",&ch);
    if(isAlpha(ch)){
        print("Alphabet\n");
    }
    else if(isDigit(ch)){
        printf("Digit\n");
        }
    else("Special character");
}
return 0;

}