#include<iostream>
#include<vector>
#include<algorithm>
#include<cstdio>
using namespace std;
int main(){
    long long a,b,sum=0;
    cin >> a >> b;
    for(long long i=a;i<=b;i++){
        for(int j=10;j<=1000000000;j*=10){
            if(i%j==3){
                cout << i << endl;
                break;
            }
            if(i%3==0){
                cout << i << endl;
                break;
            }
        }
    }
    return 0;
}