#include "perm.h"
#include<bits/stdc++.h>
using namespace std;
deque<int> find_p(long long k,int shift)
{
deque<int> ret;
if(k==2)
{
ret.push_back(shift);
return ret;
}
if(k==3)
{
ret.push_back(shift+1);
ret.push_back(shift);
return ret;
}
if(k%2==0)
{
ret=find_p(k/2,shift);
ret.push_back(shift+ret.size());
return ret;
}
else
{
ret=find_p(k-1,shift);
ret.push_front(shift+ret.size());
return ret;
}
}
vector<int> construct_permutation(long long k)
{
/*
vector<int> a;
vector<int> ret;
while(k>0)
{
if(k%2==1)a.push_back(1);
else a.push_back(0);
k/=2;
}
int n=a.size();
int idx=0;
for(idx=0;idx<n-1;idx++)ret.push_back(idx);
for(int i=n-2;i>=0;i--)
{
if(a[i]==0)continue;
ret.insert(ret.begin()+i,idx++);
}
*/
vector<int> ret;
deque<int> temp=find_p(k,0);
while(!temp.empty()){ret.push_back(temp.front());temp.pop_front();}
return ret;
}
