package fr.codegym.task.task07.task0709;

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

/*
Exprimons-nous de façon plus concise
*/

public class Solution {
    private static List<String> chaines = new ArrayList<>();
    public static void main(String[] args) throws Exception {

        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int min = 0;

        for (int i=0; i<5; i++){
            String s = reader.readLine();
            chaines.add(s);

            for (String chaine : chaines) {
                if (chaine.length() < chaines.get(i).length()) {
                    min = chaine.length();
                }
            }
        }

        for (String chaine : chaines) {
            if (chaine.length() == min)
                System.out.println(chaine);
        }
    }
}