#include<bits/stdc++.h>
using namespace std;

int main() {
	int n,i,len=0;
	string arr[1010];
	cin>>n;
	for(i=1;i<=n;i++){
		cin>>arr[i];
	}
	sort(arr+1,arr+n+1);
	for(i=1;i<=n;i++){
		if(len<arr[i].size()){
			len = arr[i].size();
		}
	}
	for(i=n;i>=1;i--){
		if(len==arr[i].size()){
			cout<<arr[i];
			break;
		}
	}
    return 0;
}

/**************************************************************
	Problem: 2082
	User: admin
	Language: C++
	Result: Accepted
	Time:15 ms
	Memory:2084 kb
****************************************************************/