Submission #731433

#	Time	Username	Problem	Language	Result	Execution time	Memory
731433		ogibogi2004	Permutation (APIO22_perm)	C++17	71.22 / 100	13 ms	1332 KiB

perm

#include "perm.h"
#include<bits/stdc++.h>
#define ll long long
using namespace std;
vector<int> construct_permutation(long long k)
{
    vector<int>ret;
    int sz=0;
    k--;
    while(k)
    {
        ll p=0;
        while((1ll<<p)-1<=k)
        {
            p++;
        }
        p--;
        ret.push_back(p);
        k-=(1ll<<p)-1;
    }
    for(int i=0;i<ret.size();i++)sz+=ret[i];
    vector<int>ans;
    for(int i=0;i<ret.size();i++)
    {
        for(int j=1;j<=ret[i];j++)
        {
            ans.push_back(sz-ret[i]+j);
        }
        sz-=ret[i];
    }
    for(int i=0;i<ans.size();i++)ans[i]--;
    //for(auto xd:ans)cout<<xd<<" ";
    //cout<<endl;
	return ans;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
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 i=0;i<ret.size();i++)sz+=ret[i];
      |                 ~^~~~~~~~~~~
perm.cpp:23:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for(int i=0;i<ret.size();i++)
      |                 ~^~~~~~~~~~~
perm.cpp:31:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for(int i=0;i<ans.size();i++)ans[i]--;
      |                 ~^~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 61.215384618 / 90