ID

input/code.cpp: In function 'int main()':
input/code.cpp:30:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < 10-qwe.size(); ++i) cout << 0;
                                   ^

#include <iostream>
#include <vector>

using namespace std;

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int n;
  cin >> n;
  vector<long> asd;
  long d = 0;
  for (int i = 1; i <= n; ++i) {
    for (;; ++d) {
      bool allow = 1;
      for (long e : asd) {
        int diff = 0;
        long te = e, td = d;
        for (int j = 0; j < 10; ++j) {
          if (te % 10 != td % 10) diff += 1;
          te /= 10;
          td /= 10;
        }
        if (diff < 2) { allow = 0; break; }
      }
      if (allow) { asd.push_back(d); break; } 
    }
  }
  string qwe = to_string(asd.back());
  for (int i = 0; i < 10-qwe.size(); ++i) cout << 0;
  cout << asd.back();
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: ACCEPTED

Test 13

Verdict: ACCEPTED

Test 14

Verdict: ACCEPTED

Test 15

Verdict: ACCEPTED