#include<iostream>
#include<string>

using namespace std;

int main()
{
    long long A, B;
    long long i, j;
    string str;
    
    cin >> A >> B;
    
    for (i = A; i <= B; ++i)
    {
        if (i%3 == 0)
        {
            cout << i << endl;
        }
        else
        {
            str = to_string(i);
            for (j = 0; j <= str.length(); ++j)
            {
                if(str[j] == '3')
                {
                    cout << i << endl;
                    break;
                }
            }
        }
    }
}