#include <bits/stdc++.h>
using namespace std;

int main() {
	int64_t A, B;
	cin >> A >> B;

	int64_t c;
	for (int i = A; i <= B; i++) {
		if (!(i % 3)) {
			cout << i << endl;
		}
		else {
			int n = i;
			while (n) {
				if (n % 10 == 3) {
					cout << i << endl;
					break;
				}

				n /= 10;
			}
		}
	}
}