제출 #1118735

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1118735		Username_taken12	순열 (APIO22_perm)	C++17	컴파일 에러	0 ms	0 KiB

perm

#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]<<" ";
	cout<<endl;
}*/

컴파일 시 표준 에러 (stderr) 메시지

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