#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < n; i++)
#define INF 100000000
using namespace std;

int a, b;

int main(){	
	cin >> a >> b;
	for(int i = a; i <= b; i++){
		int j = i;
		if(i%3 == 0){
			cout << i << endl;
			continue;
		}
		while(true){
			if(j == 0) break;
			if(j%10 == 3){
				cout << i << endl;
				break;
			}
			j /= 10;
		}
	}
}