#include "bits/stdc++.h"
#define int long long
#define ull unsigned long long
#define double long double
#define PII pair<int,int>
#define TIII tuple<int,int,int>
#define LL __int128
#define eps 1e-6
using namespace std;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
constexpr int N = 2e5 + 10, M = 2e6 + 10, mod = 1e9 + 7, inf = 1e18;
int n, m;

void solve()
{
    map<string, int> mp;
    cin >> n;
    string ans;
    for (int i = 1; i <= n; i++)
    {
        string s;
        cin >> s;
        mp[s]++;
        if (mp[s] * 2 > n) ans = s;
    }
    cout << (ans == "" ? "uh-oh" : ans) << endl;
}

signed main()
{
    std::ios::sync_with_stdio(false);
    cin.tie(nullptr), cout.tie(nullptr);
    cout << fixed << setprecision(2);

#ifndef ONLINE_JUDGE
    freopen("in.txt", "rt", stdin);
    freopen("out.txt", "wt", stdout);
#endif

    int Cases = 1;
    //cin >> Cases;
    while (Cases--)
    {
        solve();
    }
    return 0;
}