제출 #1118734

#제출 시각아이디문제언어결과실행 시간메모리
1118734Username_taken12순열 (APIO22_perm)C++17
컴파일 에러
0 ms0 KiB
#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;
}

컴파일 시 표준 에러 (stderr) 메시지

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);
      |            ^~~~~~~~