Submission #1118734

#	Time	Username	Problem	Language	Result	Execution time	Memory
1118734		Username_taken12	Permutation (APIO22_perm)	C++17	Compilation error	0 ms	0 KiB

perm

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

vector<int> construct_permuation(long long k) {
	int cnt = 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;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permuation(long long int)':
perm.cpp:5:12: error: 'popcount' was not declared in this scope
    5 |  int cnt = popcount((unsigned long long) k);
      |            ^~~~~~~~