package com.javarush.task.task07.task0712;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;


public class Solution {
    public static void main(String[] args) throws IOException {
        ArrayList<String> list = new ArrayList<>();
        BufferedReader bufferedReader = new BufferedReader (new InputStreamReader(System.in));
        int minLenght = Integer.MAX_VALUE;
        int maxLenght = 0;
        for (int i = 0; i < 10; i++){
            list.add(bufferedReader.readLine());
            if (list.get(i).length() > maxLenght) maxLenght = list.get(i).length();
            if (list.get(i).length() < minLenght) minLenght = list.get(i).length();
        }

        int indexOfFirstMinOrMaxValue=0;
        for (int i = list.size()-1; i > 0  ; i--) {
            if (list.get(i).length() == maxLenght || list.get(i).length() == minLenght) indexOfFirstMinOrMaxValue = i;
        }

        System.out.println(list.get(indexOfFirstMinOrMaxValue));
    }
}