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

int main() {
  long long a, b;
  cin >> a >> b;
  
  while(1){
    if(a > b) break;
    bool ok = false;
    if(a % 3 == 0) ok = true;
    long long k = a;
    while(k > 0){
      if(k % 10 == 3) ok = true;
      k /= 10;
    }
    if(ok) cout << a << endl;
    a++;
  }
}