using System;

public class Program

{

    public static void Main()

    {

        double hefresh = 0 ;

        double min = 5000;

        double max = 0;

        string nameMin = "";

        string nameMax = "";

        for(int i = 1 ; i <= 3 ; i++)

        {

            Console.WriteLine("enter name: ");

            string name = Console.ReadLine();

            Console.WriteLine("enter jump: ");

            double jump = double.Parse(Console.ReadLine());

            if(jump > max)

            {

                max = jump;

                nameMax = name;

            }

            if(jump < min)

            {

                min = jump;

                nameMin = name;

            }

        }

        hefresh = max-min;

        Console.WriteLine("the best studend at jump is =  " + nameMax);

        Console.WriteLine("his score is: " + max);

        Console.WriteLine("the worst studend at jump is =  " + nameMin);

        Console.WriteLine("his score is: " + min);

        Console.WriteLine("the hefresh is: " + hefresh);

    }

}