#include <bits/stdc++.h>   using namespace std;   int a[200010], b[200010], n, cnt = 0;   int main() {     ios::sync_with_stdio(0);     cin >> n;     for (int i = 2; i <= n; i++) cin >> a[i];     for (int tmp = n; tmp; tmp = a[tmp]) b[++cnt] = tmp;     reverse(b + 1, b + cnt + 1);     for (int i = 1; i <= cnt; i++) cout << b[i] <<    ;     return 0;   }   