using System;

public class Program

{

    public static void Main()

    {

        //Sarah Muñoz

        int N, N1 = 0;

        Console.WriteLine("Write as many numbers as you want, and once you write a zero, I'll tell you which number was the highest");

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

        N1 = N;

        while (N != 0)

        {

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

          if (N > N1)

          {

          }

        }

        Console.WriteLine("The highest number is " + N1);

    }

}