#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
using namespace std;

int main() {
    long long a,b;
    cin >> a >> b;
    for(long long i = a;i <= b;i++){
        if(i % 3 == 0)cout << i << endl;
        else{
            string s = to_string(i);
            for(int j = 0;j < s.length();j++){
                if(s[j] == '3'){
                    cout << i << endl;
                    break;
                }
            }
        }
    }
    return 0;
}