#include <bits/stdc++.h>

using namespace std;

string to_s(int a)
{
    string res = "";

    while (log10(a) >= 0) {
        res += '0' + a % 10;
        a /= 10;
    }

    return res;
}

int main()
{
    int a, b; cin >> a >> b;

    for (int i = a; i <= b; ++i) {
        if (i % 3 == 0 || to_s(i).find("3") != string::npos) {
            cout << i << endl;
        }
    }
}