#include <iostream>
using namespace std;
bool isThree(int n)
{

	if (n % 3 == 0)
	{
		return true;
	}
	while (n > 0)
	{
		if (n % 10 == 3)
		{
			return true;
		}
		n = n / 10;
	}
	return false;
}

int main()
{
	int A;
	int B;
	for (;;)
	{
		cin >> A >> B;
		if (B <A||A<0||B<0)
		{
			cout << "もう一度入力" << endl;
			continue;
		}
		break;
	}
	for (A; A <= B; A++)
	{
		if (isThree(A))
		{
			cout << A << endl;
		}
	}
	return 0;
}