#include <bits/stdc++.h>
using namespace std;

int main() {
	int n;
	cin>>n;
	vector<int> adjList[n];
	for(int i=0;i<n-1;i++){
		int x,y;
		cin>>x>>y;
		adjList[x].push_back(y);
		adjList[y].push_back(x);
	}
	for(int i=0;i<n;i++){
		if(adjList[i].size()<=2){
			cout<<i<<" ";
		}
	}
	return 0;
}