#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i,n) for(int i=0;i<n;i++)
typedef pair<int,int>P;

int main(){
  ll a,b;
  cin>>a>>b;
  for(ll x=a;x<=b;x++){
    if(x%3==0){
      cout<<x<<endl;
      continue;
    }
    ll temp=x;
    while(temp>0){
      if(temp%10==3){
        cout<<x<<endl;
        break;
      }
      temp/=10;
    }
  }
  return 0;
}