package com.javarush.task.task07.task0712;

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

/*
Самые-самые
*/

public class Solution {
    public static void main(String[] args) throws IOException {
        //напишите тут ваш код
        Reader r = new InputStreamReader(System.in);
        BufferedReader reader = new BufferedReader(r);
        ArrayList<String> res = new ArrayList<String>(10);
        String big = null;
        int max = 0;
        int min = 0;
        String small = null;
        int numBig = 0;
        int numSmall = 0;

        for (int i = 0; i < 10; i++) {
            String s = reader.readLine();
            res.add(s);
        }
        min = res.get(0).length();

        for (int i = 0; i < 10; i++) {
            if (max < res.get(i).length()) {
                max = res.get(i).length();
                big = res.get(i);
                numBig = i;
            }
            if (min >= res.get(i).length()) {
                min = res.get(i).length();
                small = res.get(i);
                numSmall = i;
            }
        }
        if (numBig < numSmall)
            System.out.println(big);
        else if (numBig > numSmall)
            System.out.println(small);
    }
}