//c
//https://github.com/WEIZIBIN/acm/blob/master/hdu1004.c
#include <stdio.h>
#include <string.h>
int main()
{
int i, n, j;
char s[1005][15];
int count[1005] = {0};
while(scanf("%d", &n) != EOF && n != 0)
{
int max = -1;
int maxIndex = -1;
memset(count,0,sizeof(count));
for (i = 0; i < n; ++i)
{
scanf("%s", s[i]);
}
for (i = 0; i < n; ++i)
{
for (j = 0; j < n; ++j)
{
if(s[i][0] != ' ')
{
if (i != j)
{
if (s[j][0] != ' ')
{
if (strcmp(s[i], s[j]) == 0)
{
count[i]++;
s[j][0] = ' ';
}
}
}
}
else
i++;
}
}
for (i = 0; i < n; ++i)
{
if(count[i] > max)
{
max = count[i];
maxIndex = i;
}
}
printf("%s
", s[maxIndex]);
}
return 0;
}