#include <string.h>
#include <iostream>
#include <algorithm>
#include <stdlib.h>
#include <stdio.h>
using namespace std;
int main()
{
    int i,j,n,t;
    while (cin>>n&&n)
    {
        char c[1005][20];
        int a[1005];
        memset(a,0,sizeof(a));
        for (i=0;i<n;i++)
        {
            cin>>c[i];
            for (j=0;j<i;j++)
            {
                if (strcmp(c[i],c[j])==0)
                a[i]++;
            }
        }
        int max=0,t=0;
        for (i=0;i<n;i++)
        {
            if (a[i]>max)
            {
                max=a[i];
                t=i;
            }
        }
        cout<<c[t]<<endl;

    }



    return 0;
}