#include <iostream>
using namespace std;

int main() {
    int a, b;
    string s;
    cin >> a >> b;

    for (int i = a; i <= b; i++) {
        s = to_string(i);
        if (i%3 == 0) cout << i << endl;
        else {
            for (int i = 0; i < s.size(); i++) {
                if (s[i] == '3') {
                    cout << s << endl;
                    break;
                }
            }
        }
    }
}