#include<bits/stdc++.h>
#define REP(i,n) for(int i=0;i<n;i++)
#define LOOP(i,x,n) for(int i=x;i<n;i++)
#define ALL(v) (v).begin(),(v).end()
#define PB push_back
#define MP make_pair
#define FIR first
#define UB upper_bound
#define LB lower_bound
#define int long long
using namespace std;
const int MOD=1000000007;
const int INF=1000000009;

signed main(){
  int a,b;
  cin>>a>>b;
  LOOP(i,a,b+1){
    if(i%3==0){
      cout<<i<<endl;
      continue;
    }
    else{
      string s=to_string(i);
      REP(j,s.size()){
        if(s[j]=='3'){
          cout<<i<<endl;
          break;
        }
      }
    }
  }
  return 0;
}