#include <bits/stdc++.h>
using namespace std;

#ifdef DEBUG_
#include <compe/debug.hpp>
#else
#define dump(...)
#endif

#define FastIO cin.tie(nullptr), ios_base::sync_with_stdio(false);
#define rep(i, n) for (int i = 0; i < (int)(n); ++i)
#define output(msg) cout << (msg) << '\n'
#define die(msg)         \
  do {                   \
    cout << msg << endl; \
    exit(0);             \
  } while (0)
#define all(k) k.begin(), k.end()
#define INFi 1 << 30
#define INFll 1LL << 60

template <typename T> bool chmax(T& a, const T& b) {
  return ((a < b) ? (a = b, true) : (false));
}
template <typename T> bool chmin(T& a, const T& b) {
  return ((a > b) ? (a = b, true) : false);
}

using llint = long long int;

bool is_3(int n) {
  if (n % 3 == 0) return true;

  bool can_div{false};
  string s = to_string(n);
  rep(i, (int)s.size()) {
    if (s[i] == '3') can_div = true;
  }
  return can_div;
}

int main() {
  FastIO;
  int a, b;
  cin >> a >> b;

  for (int i = a; i <= b; ++i) {
    if (is_3(i)) output(i);
  }
}