Submission #1118735

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1118735	2024-11-26 04:47:42	Username_taken12	Permutation (APIO22_perm)	C++17	Compilation error	0 ms	0 KiB

perm

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#include <bits/stdc++.h>
using namespace std;
vector<int> construct_permuation(long long k) {
  int cnt = std::popcount((unsigned long long) k); 
  int size =0;
  long long t=k;
  while(t>0){
    size++;
    t/=2;
  }
  int len = size+cnt-1;
  int h=len;
  int a =1;
  vector<int> out;
  while(k>1){
    if(k%2==1)
      out.push_back(h--);
    out.push_back(a++);
    k/=2;
  }
  return out;
}
/*int main() {
  long long k; cin>>k;
  vector<int> ans = construct_permuation(k);
  for(int i=0; i<ans.size(); i++)
    cout<<ans[i]<<" ";
 
 
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Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permuation(long long int)':
perm.cpp:6:17: error: 'popcount' is not a member of 'std'; did you mean 'count'?
    6 |  int cnt = std::popcount((unsigned long long) k);
      |                 ^~~~~~~~
      |                 count