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#pragma GCC optimize("Ofast,unroll-loops")
// #pragma comment(linker, "/stack:200000000")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma,tune=native")

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

using namespace std;
using namespace __gnu_pbds;

typedef int ll;
typedef long double ld;
typedef pair <ll, ll> pll;

#ifdef SINA
#define dbg(...) __f(#__VA_ARGS__, __VA_ARGS__)
template <typename Arg1> void __f(const char* name, Arg1&& arg1) { cout << name << " : " << arg1 << std::endl; }
template <typename Arg1, typename... Args> void __f (const char* names, Arg1&& arg1, Args&&... args) {
	const char* comma = strchr(names + 1, ',');cout.write(names, comma - names) << " : " << arg1<<" | ";__f(comma+1, args...); }
#define dbg2(x, j, n) cout<< #x << " : "; output((j), (n), x, 1); cout.flush();
#else
#define dbg(...) 0
#define dbg2(x, j, n) 0
#endif
#define SZ(x) ((ll)((x).size()))
#define File(s, t) freopen(s ".txt", "r", stdin); freopen(t ".txt", "w", stdout);
#define input(j, n, a) for (int _i = (j); _i < (n)+(j); _i++) cin>> a[_i];
#define output(j, n, a, t) for (int _i = (j); _i < (n)+(j); _i++) cout<< a[_i] << (((t) && _i != (n)+(j)-1)? ' ' : '\n');
#define kill(x) return cout<< (x) << endl, 0
#define cl const ll
#define fr first
#define sc second
#define lc (v << 1)
#define rc (lc | 1)
#define mid ((l + r) >> 1)
#define All(x) (x).begin(), (x).end()

cl inf = sizeof(ll) == 4 ? (1e9 + 10) : (3e18), mod = 1e9 + 7, MOD = 998244353;

template <class A,class B> ostream& operator << (ostream& out,const pair<A,B>&a){return out<<'('<<a.first<<", "<<a.second<<')';}
template <class A> ostream& operator << (ostream& out, const vector<A> &a) {
	out<< '['; for (int i = -1; ++i < int(a.size());) out<< a[i] << (i + 1 < int(a.size()) ? ", " : ""); return out<<']'; }
template <class T, typename _t = less <T> > using Tree = tree <T, null_type, _t, rb_tree_tag, tree_order_statistics_node_update>;

cl N = 1e5 + 7;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
const long long mods[5] = {mod, MOD, 1000000123, mod + 2, mod + 6};
long long md [2];

inline void decide () {
	md[0] = mods[rng() % 5];
	md[1] = mods[rng() % 5];
	if (md[0] == md[1]) md[1] = (md[0] != mods[2] ? mods[2] : mods[1]);
}
struct Hash {
	typedef long long ll;
	ll x, y;
	inline Hash (cl &_x = 0, cl &_y = 0) : x(_x), y(_y) {}
	friend bool operator < (const Hash &a, const Hash &b) { return a.x == b.x ? a.x < b.x : a.y < b.y; }
	friend bool operator == (const Hash &a, const Hash &b) { return (a.x == b.x && a.y == b.y); }
	friend Hash operator * (const Hash &a, cl &b) { return Hash((a.x * b) % md[0], (a.y * b) % md[1]); }
	friend Hash operator + (const Hash &a, cl &b) { return Hash((a.x + b) % md[0], (a.y + b) % md[1]); }
	friend Hash operator + (const Hash &a, const Hash &b) { return Hash((a.x + b.x) % md[0], (a.y + b.y) % md[1]); }
	friend Hash operator * (const Hash &a, const Hash &b) { return Hash((a.x * b.x) % md[0], (a.y * b.y) % md[1]); }
	friend Hash operator - (const Hash &a, const Hash &b) { return Hash((a.x - b.x + md[0]) % md[0], (a.y - b.y + md[1]) % md[1]); }
	friend Hash operator ^ (Hash a, Hash b) {
		Hash t (1, 1);
		for (; b.x; b.x >>= 1, a.x = a.x * a.x % md[0]) if (b.x & 1) t.x = t.x * a.x % md[0];
		for (; b.y; b.y >>= 1, a.y = a.y * a.y % md[1]) if (b.y & 1) t.y = t.y * a.y % md[1];
		return t;
	}
} base (N, N - 4);

struct DS {
	map <Hash, ll> mp;
	ll cnt;
	DS () : cnt(0) {}

	inline void insert (const Hash &x) { ll y = ++mp[x]; if (y == 1) cnt++; }
	inline void erase (const Hash &x) { ll y = --mp[x]; if (!y) cnt--; }
} ds;

pll ans = {-1, 1};
Hash h [N];
vector <ll> adj [N];

void DFS (cl &v = 1, cl &pr = 0) {
	h[v] = Hash (1, 1);
	for (auto &u : adj[v]) if (u != pr) {
		DFS(u, v);
		h[v] = h[v] + (base ^ h[u]);
	}
	ds.insert(h[v]);
}

void dfs (cl &v = 1, cl &pr = 0) {
	ans = max(ans, pll(ds.cnt, v));
	for (auto &u : adj[v]) if (u != pr) {
		Hash hu = base ^ h[u]; ds.erase(h[v]); h[v] = h[v] - hu; ds.insert(h[v]);
		Hash hv = base ^ h[v]; ds.erase(h[u]); h[u] = h[u] + hv; ds.insert(h[u]);
		dfs(u, v);
		ds.erase(h[u]); h[u] = h[u] - hv; ds.insert(h[u]);
		ds.erase(h[v]); h[v] = h[v] + hu; ds.insert(h[v]);
	}
}

int main ()
{
	ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);

	decide();

	ll n; cin>> n;
	for (ll i = 1, v, u; i < n; i++) {
		cin>> v >> u;
		adj[v].push_back(u);
		adj[u].push_back(v);
	}

	DFS(); dfs();

	kill(ans.sc);

	cerr<< "\nTime elapsed: " << 1000 * clock() / CLOCKS_PER_SEC << "ms\n";

	return 0;
}
/*

*/