#include<iostream>
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 if (i % 10 == 3)
		{
			cout << i << endl;
		}
		else if ( i/10 == 3)
		{
			cout << i << endl;
		}
		else
		{
			continue;
		}
	}
	return 0;
}