using System;

public class Program

{

    public static void Main()

    {

        //Yaretzi

        int num;

        int max;

        Console.WriteLine("Write as many numbers as you want but once you write a zero I’ll tell you the highest");

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

        max = num;

​

        while (num != 0)

        {

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

        if (num > max)

        {

        max = num;

        }

​

        }

​

        Console.WriteLine("The highest number is " + max);

​

​

    }

}