#include <bits/stdc++.h>
using namespace std;
int main()
{
    int a,b,temp;
    cin>>a>>b;
    for(;a<=b;a++){
        temp=a;
        while(temp>0){
            if(temp%10==3||temp/10==3||temp%3==0){
                cout<<a<<endl;
                break;
            }
            temp/=10;
        }
    }
    return 0;
}