Vuodet

#include <iostream>
#include <vector>

using namespace std;

int main() {
    cin.sync_with_stdio(false);
    cin.tie(nullptr);

    int a, b;
    cin >> a >> b;

    vector<int> ret;
    for(int x = a; x <= b; ++x) {
        string a = std::to_string(1337 * x);
        size_t i = 0;
        for(char c : std::to_string(x)) {
            while(i < a.size() && a[i] != c) {
                ++i;
            }
            if(i == a.size()) {
                goto nope;
            }
            ++i;
        }
        ret.push_back(x);
        nope: {}
    }

    cout << ret.size() << "\n";
    for(int x : ret) {
        cout << x << "\n";
    }

    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED