#include<iostream>
using namespace std;

typedef long long ll;

int main(void)
{
    ll a,b;
    cin>>a>>b;
    
    
    
    for(ll i=a;i<=b;i++)
    {
        ll tmp=i;
        if(tmp%3==0)
        {
            cout<<i<<endl;
        }
        else
        {
            while(tmp>0)
            {
                if(tmp%10==3)
                {
                    cout<<i<<endl;
                    break;
                }
                else
                {
                    tmp/=10;
                }
            }
        }
    }
    
}