Vuodet

#include <bits/stdc++.h>

typedef long long ll;

using namespace std;

void solve(int a, int b) {
  vector<int> leet;

  for (int i = a; i <= b; i++) {
    int tgt = i;
    ll lol = i * 1337;
    while (lol && tgt) {
      if (lol % 10 == tgt % 10)
        tgt /= 10;
      lol /= 10;
    }
    if (!tgt)
      leet.push_back(i);
  }

  cout << leet.size() << "\n";
  for (auto u : leet)
    cout << u << "\n";
}

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

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED