제출 #982364

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
982364		nnin	순열 (APIO22_perm)	C++17	100 / 100	2 ms	360 KiB

perm

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

vector<int> construct_permutation(long long k)
{
	int g = __lg(k);
	vector<int> ans;
	int cur = 0;
	while(cur<g) {
		ans.push_back(cur++);
	}
	for(int i=g-1;i>=0;i--) {
		if(k & (1ll<<i)) {
			if(i>0 && (k&(1ll<<(i-1))) && ans.size()>=2 && ans[ans.size()-2]>ans[ans.size()-1]) {
				i--;
				for(int j=0;j<ans.size();j++) if(ans[j]>=i) ans[j]++;
				ans.insert(ans.end()-2, i);
			} else {
				for(int j=0;j<ans.size();j++) if(ans[j]>=i) ans[j]++;
				ans.push_back(i);
			}
		}
	}
	return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:18:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for(int j=0;j<ans.size();j++) if(ans[j]>=i) ans[j]++;
      |                 ~^~~~~~~~~~~
perm.cpp:21:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(int j=0;j<ans.size();j++) if(ans[j]>=i) ans[j]++;
      |                 ~^~~~~~~~~~~

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