#include <bits/stdc++.h>
#define int long long

using namespace std;

void solve () {
    int n;
    cin >> n;

    map <string, int> mp;
    for (int i = 0; i < n; i ++) {
        string s;
        cin >> s;

        mp[s] ++;
    }

    for (auto [s, x] : mp) {
        if (x > n / 2) {
            cout << s << '\n';
            return;
        }
    }
    cout << "uh-oh\n";
}

signed main () {
    ios::sync_with_stdio (false);
    cin.tie (nullptr);

    int T = 1;
    // cin >> T;

    while (T --) {
        solve ();
    }
}