import java.util.*;
import java.math.*;
import java.io.*;
public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
	    int A = sc.nextInt();
	    int B= sc.nextInt();
	    for(; A<=B; A++){
	        if(A%3==0){
	            System.out.println(A);
	            continue;
	        }
	        int tmp = A;
	        while(tmp!=0){
	            if(tmp%10==3){
	                System.out.println(A);
	                break;
	            }
	            tmp/=10;
	        }
	    }
	}

}