using System;

​

public class Program

{

    public static void Main()

    {

        int[] str = new int[6];

        for (int i = 0; i <  str.Length; i++)

        {

            menu();

            str[i] = Convert.ToInt32(Console.ReadLine());

        }

        Array.Sort(str);

        Console.WriteLine(str[5]-str[0]);

    }

    static void menu()

    {

        Console.WriteLine("Input: ");

    }

}