#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

const int MAXN = 1e5 + 123;
vector<int> g[MAXN];

vector<int> current_path;
vector<int> diameter;

void dfs(int v, int p = -1) {
  current_path.push_back(v);
  for (int u : g[v]) {
    if (u != p) {
      dfs(u, v);
    }
  }
  if (diameter.size() < current_path.size()) {
    diameter = current_path;
  }
  current_path.pop_back();
}

int main() {
  int n;
  cin >> n;
  for (int i = 0; i < n - 1; i++) {
    int a, b;
    cin >> a >> b;
    g[a-1].push_back(b-1);
    g[b-1].push_back(a-1);
  }

  dfs(0);
  dfs(diameter.back());

  for (int i : diameter) {
    cout << i << " ";
  }
  cout << endl;
}