#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

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