There are many similiar codes in Problem E of Round 923(Div 3) which cause unfair to genuine coders.

Here is the plagiarized code:

#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include "algo/debug.h"
#else
#define debug(...) 42
#endif
int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int tt = 1;;
  cin >> tt;;
  while (tt--) {
    int n, k;
    cin >> n >> k;
    vector<int> v(n);
    vector<int> a(k);
    a[0] = n; 
    a[1] = 1;
    for (int i = 0; i < k; i++) {
      int sign = (i % 2 == 0 ? -1 : 1), move = 0, mn = n + 1, mx = 0;
      for (int j = i; j < n; j += k) {
        v[j] = a[i] + sign * move++;
        mx = max(mx, v[j]);
        mn = min(mn, v[j]);
      }
      if (sign == -1) {
        if (i + 2 < k) {
          a[i + 2] = mn &mdash; 1;
        }
      }
      else {
        if (i + 2 < k) {
          a[i + 2] = mx + 1;
        }
      }
    }
    for (int &it : v) {
      cout << it << ' ';
    }
    cout << '\n';
  }
  return 0;
}

Here are the submission Links:

245224542 (Added Unnecessary variables)

245212452

245227590

245206405

245224640

245214010

245192424 (Changed to Perl)

245196819

and many more similiar submissions.

We know that the blog gets downvoted by many cheaters.

MikeMirzayanov plz take some actions against cheaters.