package com.javarush.task.task07.task0708;

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

/*
Самая длинная строка
*/

public class Solution {
    private static ArrayList<String> strings;
    private static int maxStr;

    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
      strings = new ArrayList<String>();
        for(int i=0;i<5;i++)
        {
            String s = reader.readLine();
            if(maxStr<=s.length()){maxStr=s.length();}
            strings.add(s);
        }
        for(int i=0; i<5;i++)
        {
            String s1;
            s1 = strings.get(i);
            if(s1.length() == maxStr)
            {
                System.out.println(strings.get(i));
            }
        }
    }
}