import java.util.Scanner;
 
class no207{
	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);
		    }else if( (A/10==3) ||((A%10)%3==0)){
		        System.out.println(A);
		    }else{}
		}
		
	}
}