#include <bits/stdc++.h>
#define INF 2000000000000000000
#define ll long long
#define pll pair<ll, ll>
using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  ll A, B;
  cin >> A >> B;
  for (ll i = A; i <= B; ++i) {
    string si = to_string(i);
    if (i % 3 == 0) {
      cout << i << "\n";
    }
    else {
      for (ll j = 0; j < si.size(); ++j) {
        if (si.at(j) == '3') {
          cout << i << "\n";
          break;
        }
      }
    }
  }
}