import java.util.*;

public class Test{
    public static void main(String[] args){
        Scanner s = new Scanner(System.in);
         int a = s.nextInt(),b = s.nextInt();

        for(int i=a;i<=b;i++){
        	if(i%3 == 0){
        		System.out.println(i);
        		continue;
        	}
        	else{
        		String str = String.valueOf(i);

        		for(int j=0;j<str.length();j++){
        			if(str.charAt(j) == '3'){
        				System.out.println(i);
        				break;
        			}
        		}
        	}
        }
    }
}