Vuodet

#include <bits/stdc++.h>

typedef long long ll;

#define M 1000000007
#define N (1 << 18)

using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int a, b;
    cin >> a >> b;

    vector<string> ans;

    for (int i = a; i <= b; ++i) {
        string num = to_string(i);
        string num2 = to_string(i * 1337);
        int j = 0;
        for (int k = 0; k < (int)num2.length(); ++k) {
            if (j == (int)num.length()) break;
            if (num[j] == num2[k]) j++;
        }

        if (j == (int)num.length()) ans.push_back(num);
    }

    cout << ans.size() << endl;
    for (string x : ans) {
        cout << x << endl;
    }

    return 0;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED