#define _USE_MATH_DEFINES	//M_PI(π),M_SQRT2(√2)
#include <iostream>			//std::cout, std::cin
#include <string>			//std::string,std::to_string(C++11)
#include <vector>			//std::vector
#include <valarray>			//std::valarray
#include <algorithm>		//std::sort
#include <time.h>			//localtime_s
#include <cstdlib>			//abs
#include <cmath>			//abs,std::pow,sqrt,sin,cos,round,floor,ceil
#include <fstream>			//std::ifstream
#include <iomanip>			//std::setprecision,std::setw,std::setfill
#include <random>			//std::random(C++11)
#include <numeric>			//std::accumulate

int main(void) {

	//test用
	//std::ifstream in("test.txt");
	//std::cin.rdbuf(in.rdbuf());

	//const unsigned int MODULO = 1000000007;	//MODULO 10^9+7用

	unsigned int A, B;
	std::cin >> A >> B;
	std::string temp;

	for (unsigned int i = A; i <= B; i++) {
		if (i % 3 == 0) {
			std::cout << i << std::endl;
		}
		else {
			temp = std::to_string(i);
			for (int j = 0; j < temp.length(); j++) {
				if (temp[j] == '3') {
					std::cout << i << std::endl;
					break;
				}
			}
		}
	}

}