using System;

public class Program

{

    public static void Main()

    {

        //Diego Coss

        int nm1, nm2, nm3;

    Console.WriteLine("Hello, give me a number please");

    nm1 = int.Parse(Console.ReadLine());

    Console.WriteLine("give me another number please");

    nm2 = int.Parse(Console.ReadLine());

    Console.WriteLine("give me another number please");

    nm3 = int.Parse(Console.ReadLine());

        if (nm1<nm2 && nm1>nm3 || nm1>nm2 && nm1<nm3)

        {

    Console.WriteLine("The middle number is: " + nm1);

        }

        else if ( nm2<nm1 && nm2>nm3 || nm2>nm1 && nm2<nm3 )

        {

    Console.WriteLine("The middle number is: " + nm2);

        }

        else if ( nm3<nm1 && nm3>nm2 || nm3>nm1 && nm3<nm2 )

        {

    Console.WriteLine("The middle number is: " + nm3);

        }

        else if (nm1 == nm2 || nm1 == nm3 || nm2 == nm3)

        {

        Console.WriteLine("Try again with other numbers");  

        }

        }

    }

​