#include <bits/stdc++.h>
using namespace std;
template <typename T> using vec = vector<T>;
template <typename T> using vvec = vector<vector<T>>;

constexpr int64_t mpow(int64_t a, int64_t b, int64_t mod = 1000000007) {
    if (b <= 0) { return 1; } if (b == 1) { return a % mod; } if (b == 2) { return (a * a) % mod; }
    return (max(a * (b & 1), (int64_t)1) * mpow(mpow(a, b / 2, mod), 2, mod)) % mod;
}
constexpr int64_t mdiv(int64_t a, int64_t b, int64_t mod = 1000000007) {
    return (a * mpow(b, mod - 2, mod)) % mod;
}

int main() {
    int a, b; cin >> a >> b;
    for (int i = a; i <= b; ++i) {
        if (i % 3 == 0) {
            cout << i << endl;
            continue;
        }
        int j = i;
        while (j) {
            if (j % 10 == 3) {
                cout << i << endl;
                break;
            }
            j /= 10;
        }
    }
}