#include<bits/stdc++.h>
using namespace std;
typedef long long LL;
const int N=1e5+10;
map<string,LL>mp;
string s;
int main() 
{
	ios::sync_with_stdio(false);cin.tie(nullptr);
    LL n;
    cin>>n;
    LL maxn=0;
    string t;
    for(int i=1;i<=n;i++)
    {
    	cin>>s;
    	mp[s]++;
    	if(mp[s]>maxn)
    	{
    		t=s;
    		maxn=mp[s];
    	}
        if(maxn>=n/2)
        {
            t=s;
            break;
        }
    }
    if(maxn<=n/2)
    {
    	cout<<"uh-oh"<<endl;
    }
    else cout<<t<<endl;
    return 0;
}