#include <bits/stdc++.h>

using namespace std;

using i64 = long long;

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 [a, b] : mp){
        if (b >= (n + 1) / 2){
            cout << a << "\n";
            return;
        }
    }
    cout << "uh-oh\n";
}

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

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