#include <iostream>

int main()
{
	unsigned long A, B;
	std::cin >> A;
	std::cin >> B;
	int num;
	for (unsigned long i = A; i <= B; i++)
	{
		if (i % 3 == 0)
		{
			std::cout << i << std::endl;
			continue;
		}
		num = i;
		for (int j = 0; j < 10; j++)
		{
			num = (num / 10) % 10;
			if (num == 3)
			{
				std::cout << num << std::endl;
				break;
			}
		}
	}
	return 0;
}