#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main()
{
int n = 0;
while (scanf("%d",&n) != EOF && n!= 0)
{
char str[1000][16];//只对各不相同的颜色进行存储
memset(str,0,sizeof(str));//all set to be NUL
char tmp[16];
int count[1000] = {0};//对应每个str[i]统计个数
int len = 0;//str长度
for (int i=0; i<n; i++)
{
scanf("%s",tmp);
int tmplen = strlen(tmp);
if (len == 0)//first color
{
strncpy(str[0],tmp,tmplen);
len = 1;
count[0] = 1;
continue;
}
for (int i=0; i<len; i++)
{
if (strcmp(str[i],tmp) == 0)//str[i]和tmp同色，则对应count[i]++
{
count[i]++;
break;
}
if (i == len-1)//之前所有的str[i]和tmp都不同色，添加新色str[len]
{
strncpy(str[len],tmp,tmplen);
count[len] = 1;
len++;
break;//注意此处要break，否则最后一次匹配len++，会导致for额外循环一次！
}
}
}
int max = count[0];
int pos = 0;
for (int i=0; i<len; i++)
{
//printf("%s:%d\n", str[i],count[i]);
if (count[i] > max)
{
max = count[i];
pos = i;
}
}
printf("%s\n",str[pos]);
}
return 0;
}