#include <iostream>
using namespace std;

int main() {
    
    int a,b;
    cin >> a >> b;
    
    for(int i = a; i < b; i++){
        if(i/10 == 3 || i%10 == 3 || i%3 == 0){
            cout << i << "\n";
        }
        else{
            break;
        }
    }
    
    return 0;
}