package com.codegym.task.task07.task0708;

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

/*
Longest string

*/

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

    public static void main(String[] args) throws Exception {
        //write your code here
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        List<Integer> int_array = new ArrayList<>();
        for (int i = 0; i < 5; i++) {
            String s = reader.readLine();
            strings.add(s);
            int_array.add(s.length());
        }
        int longest = Collections.max(int_array);

        for (int i = 0; i < strings.size(); i++) {
            if (strings.get(i).length() == longest){
                System.out.println(strings.get(i));
            }
        }
    }
}