ol_5_08

#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

int main()
{
    ifstream cin("input.txt");
    int n;
    cin>>n;

    vector <int> a, s;
    a.resize(n);
    for(int i = 0; i < n; i++)
        cin>>a[i];

    int i = 1;
    n = 0;
    while(a[i-1] != 0)
    {
        cout<<i<<' ';
        s.push_back(i);
        n++;
        i = a[i-1];
    }
    cout<<i<<' ';
    for(int i = n-1; i >= 0; i--)
        cout<<s[i]<<' ';

}