package com.javarush.task.task07.task0708;

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

/*
Самая длинная строка
*/

public class Solution {
    private static List<String> strings;

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