#include <iostream>
#include <vector>

using namespace std;

void obidji(vector<int> &zamak, int n, int i) {
    if(i>=n) return;
    obidji(zamak, n, 2*i+1);
    cout << zamak[i] << " ";
    obidji(zamak, n, 2*i+2);
}

int main() {
    int n;
    cin >> n;
    vector<int> a(n);
    for(int &x : a) cin >> x;
    obidji(a, n, 0);
    cout << endl;
}