using System;

​

class Program

{

​

    static void Main()

    {

        Console.WriteLine("Chose metric system \n cm , m , km");

        string metric = Console.ReadLine();

        double unit = double.Parse(Console.ReadLine());

​

​

        if (metric == "cm")

        {

            Console.WriteLine("you chose cm now take different metric like \n m or km");

            string metric1 = Console.ReadLine();

            if (metric1 == "km")

            {

                double result = unit / 100000;

                Console.WriteLine("cm to km is : {0} ", result);

            }else if(metric1 == "m")

            {

                double result = unit / 100;

                Console.WriteLine("cm to m is : {0} ", result);

            }

            else

            {

                Console.WriteLine("vyvel si greshna merna edinica");

            }

        }

​

    }

​

}