#include <bits/stdc++.h>
#define PB push_back
using namespace std;
const int N = 100100;
vector<int> g[N];
int n, mrk[N], ans, who_kto[N];
void dfs(int v, int p){
for (int u : g[v]){
if (u == p) continue;
dfs(u, v);
if (mrk[u] < 0){
ans += 2;
if (mrk[v] < 0){
mrk[v] = u;
mrk[u] = v;
} else {
mrk[u] = mrk[v];
mrk[v] = u;
}
}
}
}
int main(){
ios_base::sync_with_stdio(0); cin.tie(0);
#ifdef _LOCAL
freopen("in.txt","r",stdin);
#endif // _LOCAL
cin >> n;
for (int i = 1; i < n; i++){
int x, y; cin >> x >> y;
x--; y--;
g[x].PB(y);
g[y].PB(x);
}
fill(mrk, mrk + n, -1);
dfs(0, -1);
if (mrk[0] < 0) {
ans += 2;
mrk[0] = mrk[g[0][0]];
mrk[g[0][0]] = 0;
}
cout << ans << " " << ans << '\n';
for (int i = 0; i < n; i++)
who_kto[mrk[i]] = i;
for (int i = 0; i < n; i++)
cout << who_kto[i] + 1 << " ";
cout << '\n';
for (int i = 0; i < n; i++)
cout << who_kto[i] + 1 << " ";
cout << '\n';
return 0;
}
