#include <iostream>
using ll = long long;
using namespace std;
int main() {
    ll a, b; cin >> a >> b;
    for(int i = a; i <= b; i++) {
        if (i % 3 == 0) {
            cout << i << endl;
            continue;
        }
        string x = to_string(i);
        for (char c : x) {
            if (c == '3') {
                cout << i << endl;
                break;
            }
        }
    }
}