#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;
}