package com.javarush.task.task07.task0708;

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

/*
Самая длинная строка
*/

public class Solution {
    private static ArrayList<String> strings =new ArrayList<String>();

    public static void main(String[] args) throws Exception {

        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        for (int i=0;i<5;i++){
            strings.add(i,reader.readLine());
        }
        int [] array = new int[strings.size()];
        for (int i = 0; i<array.length; i++){
            array[i]=strings.get(i).length();
        }
        Arrays.sort(array);
        for (int i=strings.size()-1;i>=0;i--){
            if (strings.get(i).length()>=array[array.length-1]){
                System.out.println(strings.get(i));
            }
        }
    }
}