#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <functional>
#include <set>
#include <sstream>
#include <map>
#include <queue>
#include <stack>

using namespace std;


int main()
{
		
	unsigned long long A,B;
	cin>>A>>B;
	
	for(long long i=A;i<=B;i++){
		
		if(i%3==0){
			cout<<i<<endl;
			continue;
		}
		
		stringstream ss;
		ss<<i;
		string s=ss.str();
		
		for(int j=0;j<s.size();j++){
			if(s[j]=='3'){
				cout<<i<<endl;
				break;
			}
		}
		
	}

	return 0;
}