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package com.javarush.task.task07.task0712;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
/*
Самые-самые
*/
public class Solution {
public static void main(String[] args) throws IOException {
BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
ArrayList<String> list = new ArrayList<String>();
int a = 0;
int b = 0;
String a1 = null;
String b1 = null;
for (int i = 0; i < 10; i++) {
list.add(reader.readLine());
}
int min = list.get(0).length();
int max = list.get(0).length();
for (int i = 0; i < list.size(); i++) {
if (list.get(i).length() < min) {
min = list.get(i).length();
a = list.indexOf(i);
a1 = list.get(i);
}
}
for (int i = 0; i < list.size(); i++) {
if (list.get(i).length() > max) {
max = list.get(i).length();
b = list.indexOf(i);
b1 = list.get(i);
}
}
if(a < b){
System.out.println(a1);
}
else if(b < a){
System.out.println(b1);
}
}
}