#include <algorithm>
#include <iostream>
#include <vector>
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;
            continue;
        }
        for (int t = i; t > 0; t /= 10) {
            if (t % 10 == 3) {
                cout << i << endl;
                break;
            }
        }
    }
    return 0;
}