#include <vector>
#include <list>
#include <map>
#include <set>
#include <queue>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <limits>
#include <tuple>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <ctime>

using namespace std;

int solve(long long num) {
	long long w = 10;
	if (num % 3 == 0) return 1;
	else {
		while (num > w) {
			if (num%w == 3) {
				return 1;
				break;
			}
			num *= 10;
		}
	}
	return 0;
}

int main() {
	long long a, b, i, ans = 0;
	cin >> a >> b;
	for (i = a; i <= b; i++) {
		int num;
		num = solve(i);
		if (num == 1) cout << i << endl;
	}
	return 0;
}