#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;
}