package com.javarush.task.task07.task0712;

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

/*
Самые-самые
*/

public class Solution {
    public static void main(String[] args) throws Exception {
         BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        ArrayList<String> list = new ArrayList<String>();
        int max = 0, min = 0;
        for (int i = 0; i < 10; i++) {
            list.add(i, reader.readLine());
        }
        for (int i = 0; i < 10; i++){
            if (list.get(i).length() > max) {
                max = list.get(i).length();
            }
        if (list.get(i).length() < min) {
            min = list.get(i).length();
        }
     }
        String s = min < max ? list.get(min) : list.get(max);
        System.out.println(s);
    }
}