#include <bits/stdc++.h>
#define int long long
using namespace std;
using Graph = vector<vector<int>>;

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