#include <bits/stdc++.h>
using namespace std;

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

    for (int i=a; i<=b; ++i) {
        bool ok = false;
        if (i % 3 == 0) ok = true;
        int k = i;
        while (!ok && k>0) {
            if (k % 10 == 3) ok = true;
            k /= 10;
        }
        if (ok) {
            cout << i << endl;
        }
    }

    return 0;
}