using System;
public class Program
{
public static void Main()
double num, num2;
Console.WriteLine("enter a number");
num = double.Parse(Console.ReadLine());
num2 = 0;
while (num - num2 > 0)
num2 = num;
}
if (num==0)
Console.WriteLine("finish");
Console.WriteLine("sidra ola");
else
Console.WriteLine("lo sidra ola");