#include <bits/stdc++.h>
#define rep(i,a,b) for(int i = (a); i < (b); i++)
#define all(A) (A).begin(),(A).end()
#define MOD 1000000007
using namespace std;
using ll = long long;
using Graph = vector<vector<int>>;

int main() {
	int a,b; cin >> a >> b;
	rep(i,a,b+1){
		string s = to_string(i);
		if(i%3 == 0){
			cout << i << endl;
			continue;
		}
		rep(j,0,(int)s.size()){
			if(s[j] == '3'){
				cout << i << endl;
				break;
			}
		}

	}
}