Submission #574162

#	Time	Username	Problem	Language	Result	Execution time	Memory
574162		Lawliet	Permutation (APIO22_perm)	C++17	91.33 / 100	2 ms	340 KiB

perm

#include "perm.h"
#include <bits/stdc++.h>

using namespace std;

vector<int> construct_permutation(long long k)
{
	int mn = 0;
	vector<int> ans;

	while( k > 1 )
	{
		if( k & 1 )
			ans.push_back( mn++ ), k ^= 1;
		else
			ans.push_back( -1 ), k >>= 1;
	}

	int mx = (int)ans.size() - 1;

	for(int i = 0 ; i < ans.size() ; i++)
		if( ans[i] == -1 ) ans[i] = mx--;

	reverse( ans.begin() , ans.end() );

	return ans;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:21:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |  for(int i = 0 ; i < ans.size() ; i++)
      |                  ~~^~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 81.333333333 / 90