using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

        List <string> Words = new List <string> ();

        string Word;

        while ((Word=Console.ReadLine()) !="")

        {

            Words.Add(Word);

        }

        string minWord = Words.Min();

        Console.WriteLine(minWord);

        string maxWord = Words.Max();

        Console.WriteLine(maxWord);

        double averageLength = GetAverageLength (Words);

        Console.WriteLine(averageLength);

    }

    public static double GetAverageLength (List <string> Words)

    {

        double mediumLength = 0;

        foreach (string word in Words)

        {

            mediumLength += word.Length;

        }

        mediumLength /= Words.Count;

        return mediumLength;

    }

}