#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
int main(){
    char str[1001][16];
    int count[1001];
    int n,i,j,index;
    int cnt;
    while(scanf("%d",&n),n){
        index=0;
        char temp[16];
        memset(count,0,sizeof(count));
        while(n--){
            scanf("%s",temp);
            for(j=0;j<index;j++){
                if(strcmp(temp,str[j])==0){
                    count[j]++;
                    break;
                }
            }
            if(j==index){
                memcpy(str[index++],temp,sizeof(temp));
                count[j]++;
            }


        }
        for(i=0,cnt=0;i<index;i++)
                if(count[i]>count[cnt])
                cnt=i;
        printf("%s\n",str[cnt]);

    }
}