#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int MOD = 1000000007;
#define sz(x) (ll)(x).size()
#define rd ({ll x; cin >> x; x; })
#define dbg(x) cerr << "[" #x "]  " << (x) << "\n\n"
// #define errv(x) {cerr << "["#x"]  ["; for (const auto& ___ : (x)) cerr << ___ << ", "; cerr << "]\n";}
// #define errvn(x, n) {cerr << "["#x"]  ["; for (auto ___ = 0; ___ < (n); ++___) cerr << (x)[___] << ", "; cerr << "]\n";}
#define cerr if(0)cerr
#define xx first
#define yy second
mt19937 rnd(std::chrono::high_resolution_clock::now().time_since_epoch().count());
/*_________________________________________________________________________________________________________________________*/
vector<ll> out;
struct cNode {
    ll u, len;
};
ll dfs(vector<cNode> adj[], ll node, ll par)
{
    cerr << node << "<---" << par << "\n";
    // cerr << node << endl;
    if (out[node] != -1)
        return out[node];
    ll newLen = 0;
    for (cNode& it : adj[node]) {
        if (it.u == par)
            continue;
        if (it.len == -1)
            it.len = dfs(adj, it.u, node);
        newLen = max(newLen, it.len + 1);
    }
    return out[node] = newLen;
}
void Solve()
{
    ll n;
    cin >> n;
    out = vector<ll>(n + 1, -1);
    vector<cNode> adj[n + 1];
    for (int i = 0; i < n - 1; i++) {
        ll u, v;
        cin >> u >> v;
        adj[u].push_back({ v, -1 });
        adj[v].push_back({ u, -1 });
    }
    set<pair<ll, ll>> st;
    for (int i = 1; i <= n; i++) {
        st.insert({ dfs(adj, i, 0), i });
    }
    cout << st.begin()->first << " " << st.begin()->second << "\n";
}

int32_t main()
{
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    int t = 1;
    // cin >> t;
    for (int i = 1; i <= t; i++) {
        // cout << "Case #" << i << ": "; // cout << "Case " << i << ": ";
        Solve();
    }
    return 0;
}
// Coded by Tahsin Arafat (@TahsinArafat)