#include <iostream>
#include <string>
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 (auto c : s)if (c == '3') {
				cout << i << endl;
				break;
			}
		}
	}
}