#include "stdio.h"
#include "ctype.h"
main () {
  int y;
  int f = 1;
  printf("Hello World!\n"); 
  fflush(NULL);
  for ( y = 0 ; y++ < 11 ;) {
    f *= y;
    printf("Factorial %2x:  %8d\n", y, f);
    fflush(NULL);
  }
  return 0;
}