#include <bits/stdc++.h>
using namespace std;
typedef unsigned long long ul;
typedef signed long long ll;
ul over = 1000000007;

int main(void)
{
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed;
  ll a, b;
  cin >> a >> b;
  ll ans = 0;
  for (ll n = a; n <= b; ++n) {
    if (n%3==0) cout << n << endl;
    else {
      string sn = to_string(n);
      for (auto c : sn) {
        if (c=='3') {cout << n << endl; break;}
      }
    }
  }
  return 0;
}