#include "iostream"
using namespace std;

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