using System;

public class Program

{

    public static void Main()

    {

        //Luisa Weissbach

        int num, num2; 

        Console.WriteLine("Hello, write any number, when you write a zero I´ll tell you what the highest number was");

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

        num2 = num; 

        while (num != 0 )

        {

            Console.WriteLine("Write another number");

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

            if (num > num2)

            {

                num2 = num; 

            }

        }

        Console.Write("The highest number was:" + num2);

    }

}