/**
 *  author:   TakeruOkuyama
 *  created:  2020-04-09 14:53:46
**/
#include <bits/stdc++.h>
#define rep(i, n) for(int i = 0; i < (n); i++)
using namespace std;
using ll = long long;
using P = pair<int, int>;

const int MOD = 1000000007;

int main(){
    int A, B;
    cin >> A >> B;
    for(int i = A; i <= B; i++){
        if(i % 3 == 0){
            cout << i << endl;
            continue;
        }
        string S = to_string(i);
        rep(j, S.size()){
            if(S.at(j) == '3'){
                cout << i << endl;
                continue;
            }
        }
    }
return 0;}

/**
 * g++ code.cpp
 * ./a.out
 * shift + ctrl + i
**/