#include <stdio.h>

int main (void) {
  long a, b;
  scanf ("%ld %ld", &a, &b);

  char buff[16] = { 0 };

  for (; a <= b; a++){
    if (a % 3 == 0)
	    goto ok;

    sprintf (buff, "%ld", a);
    for (int i = 0; buff[i] != '\0'; i++) {
	  if (buff[i] == '3') {
ok:
	    printf ("%ld\n", a);
	    continue;
	  }
	  }
  }
}