Submission #820943

#	Time	Username	Problem	Language	Result	Execution time	Memory
820943		Hanksburger	Permutation (APIO22_perm)	C++17	71.22 / 100	11 ms	1108 KiB

perm

#include "perm.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> vec, ans;
vector<int> construct_permutation(long long k)
{
    vec.clear();
    ans.clear();
    for (long long i=59; i>=1; i--)
    {
        while (k>(1LL<<i)-1)
        {
            k-=(1LL<<i)-1;
            vec.push_back(i);
        }
    }
    long long sum=0;
    for (long long i=0; i<vec.size(); i++)
    {
        for (long long j=sum+vec[i]-1; j>=sum; j--)
            ans.push_back(j);
        sum+=vec[i];
    }
    reverse(ans.begin(), ans.end());
    return ans;
}

Compilation message (stderr)

perm.cpp: In function 'std::vector<int> construct_permutation(long long int)':
perm.cpp:18:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for (long long i=0; i<vec.size(); i++)
      |                         ~^~~~~~~~~~~

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