#include <stdio.h>
int main ()
{
    char ch;
    scanf("%c",&ch);
    if((ch >= 'a' && ch <='z') || (ch >= 'A' && ch <= 'Z')){
  printf("Alphabet");{
}
 if (ch>= '0' && ch <='9')
    printf("Digit");
    else {
        printf("Special character:");
  }
return 0;