#include<iostream>
using namespace std;

int main(){
    int a, b;
    cin >> a >> b;
    for (int i = a;i <= b; i++){
        if(i%3==0){
            cout<<i<<endl;
            continue;
        }
        while(1){
            if(i%10==3){
                cout<<i<<endl;
                break;
            }
            if(!(i=i/10)){
                break;
            }
        }
    }
    return 0;
}