#include<iostream>

using namespace std;

int main() {
	int A, B;
	cin >> A >> B;

	while (A != B) {
		if (A % 3 == 0) {
			cout << A << endl;
		}
		else {
			int a = A;
			while (a != 0) {
				if (a % 10 == 3) {
					cout << A << endl;
					break;
				}
				a = a / 10;
			}
		}
		A++;
	}
	return 0;
}