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

int main()
{
	ios_base::sync_with_stdio(false);
	int n;
	cin>>n;
	vector<vector<int>> G(n+5);
	for(int i=1;i<n;i++)
	{
		int u,v;
		cin>>u>>v;
		G[u].push_back(v);
		G[v].push_back(u);
	}
	vector<int> pa(n+5),dep(n+5);
	vector<int> ord;
	function<void(int,int)> dfs=[&](int u,int p)
	{
		ord.push_back(u);
		for(auto v:G[u])
		{
			if(v==p)continue;
			pa[v]=u;
			dep[v]=dep[u]+1;
			dfs(v,u);
		}
	};
	dep[1]=0;pa[1]=0;
	dfs(1,0);
	auto r=max_element(dep.begin(),dep.end())-dep.begin();
//	for(int i=1;i<=n;i++)cerr<<i<<' '<<dep[i]<<' '<<pa[i]<<endl;
	
	dep[r]=0;pa[r]=0;
	dfs(r,0);
	auto nr=max_element(dep.begin(),dep.end())-dep.begin();
	int len=dep[nr];
	if(len<=2)
	{
		cout<<"NO\n";
		return 0;
	}
//	cerr<<"! "<<len<<endl;
	while(dep[nr]>(len+1)/2)nr=pa[nr];
	ord.clear();dep[nr]=0;
	dfs(nr,pa[nr]);
	dfs(pa[nr],nr);
	cout<<"YES\n";
	for(auto x:ord)
		cout<<x<<' ';
	
	return 0;
}