#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;
		}
	}
}