#include<bits/stdc++.h>
using namespace std;
constexpr int M=3e5+5;
vector<int>ans,adj[M];
int n,u,v;bool vis[M];
int read(){
    int x=0;char ch=getchar();
    while (!isdigit(ch)) ch=getchar();
    while (isdigit(ch)) x=x*10+ch-48,ch=getchar();
    return x;
}
void dfs(int x,int f){
    vis[x]=1;ans.emplace_back(x);
    for (auto y:adj[x]) if (!vis[y]&&y!=f) dfs(y,x);
}
int main(){ n=read();
    for (int i=1;i<n;i++){
        int x=read(),y=read();
        adj[x].emplace_back(y);
        adj[y].emplace_back(x);
    }
    for (int i=1;i<=n;i++) if (adj[i].size()>1)
        for (auto j:adj[i]) if (adj[j].size()>1)
            u=i,v=j;
    if (!u&&!v) return puts("No"),0;
    puts("YES");dfs(u,v);dfs(v,u);
    for (auto x:ans) printf("%d ",x);
    return 0;
}