#include<iostream>
#include<algorithm>

using namespace std;

int main(){

	int a,b;

	cin>>a>>b;

	for(int i = a ; i<=b ; i++){
		if(i%3==0){
			cout<<i<<endl;
			continue;	
		
		}
			int x = i;
		while(true){
			
			if(x==0) break;
			if(x%10==3){
				cout<<i<<endl;		
				break;
			}
			x = x/10;
		}
	
	}		 

	return 0;
}