Submission #1040721

#	Time	Username	Problem	Language	Result	Execution time	Memory
1040721		MarwenElarbi	Permutation (APIO22_perm)	C++17	0 / 100	0 ms	604 KiB

perm

#include <bits/stdc++.h>
#include "perm.h"
using namespace std;
#define pb push_back
std::vector<int> construct_permutation(long long k)
{
	k--;
	vector<int> tab;
	int cnt=0;
	for (int i = 63; i >= 0; --i)
	{
		if(k>=(1ll<<i)){
			k-=(1ll<<i);
			tab.pb(i+1);
			cnt+=i+1;
		}
	}
	vector<int> ans;
	for (int i = 0; i < tab.size(); ++i)
	{
		for (int j = cnt-tab[i]+1; j <= cnt; ++j)
		{
			ans.pb(j);
		}
		cnt-=tab[i];
	}
	return ans;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:19:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |  for (int i = 0; i < tab.size(); ++i)
      |                  ~~^~~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 90