import java.util.Scanner;
public class Main{
public static void main(String[] args){
Scanner input = new Scanner(System.in);
int n = input.nextInt();
String[] str = new String[1+n];
int min = 1000;
for (int i = 0; i <str.length; i++) {
str[i] = input.nextLine();
}
for (String s : str) {
if(s.length()!=0){
min = Math.min(min,s.length());
}
}
for (String s : str) {
if(s.length()==min){
System.out.println(s);
break;
}
}
}
}