#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int MAXN = 1000;
int N, A[MAXN+10];
bool vis[MAXN+10][MAXN+10];
vector<pii> dp[MAXN+10][MAXN+10];
vector<pii> &solve(int now, int pp)
{
if(vis[now][pp]) return dp[now][pp];
vis[now][pp]=1;
vector<pii> &ret=dp[now][pp];
if(now*2>N)
{
ret.push_back({now, A[pp]});
return ret;
}
if(now*2+1>N)
{
if(A[pp]>A[now*2])
{
ret.push_back({now, A[now*2]});
ret.push_back({now*2, A[pp]});
}
else
{
ret.push_back({now, A[pp]});
ret.push_back({now*2, A[now*2]});
}
return ret;
}
if(A[pp]<A[now*2] && A[pp]<A[now*2+1])
{
vector<pii> &p=solve(now*2, now*2), &q=solve(now*2+1, now*2+1);
ret.resize(p.size()+q.size()+1);
ret[0]={now, A[pp]};
merge(p.begin(), p.end(), q.begin(), q.end(), ret.begin()+1);
return ret;
}
if(A[now*2]<A[pp] && A[now*2]<A[now*2+1])
{
vector<pii> &p=solve(now*2, pp), &q=solve(now*2+1, now*2+1);
ret.resize(p.size()+q.size()+1);
ret[0]={now, A[now*2]};
merge(p.begin(), p.end(), q.begin(), q.end(), ret.begin()+1);
return ret;
}
if(A[now*2+1]<A[pp] && A[now*2+1]<A[now*2])
{
vector<pii> ret1, ret2;
vector<pii> &p1=solve(now*2, pp), &q1=solve(now*2+1, now*2);
ret1.resize(p1.size()+q1.size()+1);
ret1[0]={now, A[now*2+1]};
merge(p1.begin(), p1.end(), q1.begin(), q1.end(), ret1.begin()+1);
vector<pii> &p2=solve(now*2, now*2), &q2=solve(now*2+1, pp);
ret2.resize(p2.size()+q2.size()+1);
ret2[0]={now, A[now*2+1]};
merge(p2.begin(), p2.end(), q2.begin(), q2.end(), ret2.begin()+1);
ret=min(ret1, ret2);
return ret;
}
}
int main()
{
scanf("%d", &N);
for(int i=1; i<=N; i++) scanf("%d", &A[i]);
vector<pii> ans=solve(1, 1);
for(auto it : ans) printf("%d ", it.second);
}
