#include <bits/stdc++.h>
using namespace std;
using ll=long long;
int n;
map<string,int> mp;
string s;
void solve(){
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>s;
        mp[s]++;
    }
    int flag=0;
    for(auto x:mp){
        if(x.second*2>n){
            cout<<x.first<<"\n";
            return;
        }
    }
    cout<<"uh-oh\n";
}
int main(){
    ios::sync_with_stdio(false),cin.tie(0);
    int _=1;
    // cin>>_;
    while(_--)  solve();
    return 0;
}