#include <bits/stdc++.h>
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;
        }
        else {
            string s = to_string(i);
            for (int j = 0; j < s.length(); ++j) {
                if (s[j] == '3') {
                    cout << i << endl;
                    break;
                }
            }
        }
    }
}