Submission #911871

#	Time	Username	Problem	Language	Result	Execution time	Memory
911871		nullchilly	Permutation (APIO22_perm)	C++17	91.33 / 100	2 ms	600 KiB

perm

#include "perm.h"
#include <bits/stdc++.h>
using namespace std;

std::vector<int> construct_permutation(long long k)
{
  int m = __lg(k) + 1;
  vector<int> zero(m + 1);
  int pad = 0;
  for (int j = 0; j <= m; j++) {
    if (k & (1ll << j)) {
      zero[m - j - 1] = ++pad;
    }
  }
  vector<int> ans;
  for (int i = 1; i < m; i++) {
    ans.push_back(i + pad - 2);
    if (zero[i]) ans.push_back(zero[i] - 1);
  }
  return ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 81.333333333 / 90