Metric Converter

using System;

namespace MetricConverter
{
    class Program
    {
        static void Main(string[] args)
        {
            double number = double.Parse(Console.ReadLine());
            string inputMetric = Console.ReadLine();
            string outputMetric = Console.ReadLine();

            if (inputMetric == "mm") {
                if (outputMetric == "cm") {
                    number /= 10;
                }
                else
                {
                    number /= 1000;
                }
            }
            else if (inputMetric == "cm") {
                if (outputMetric == "m") {
                    number /= 100;
                }
                else
                {
                    number *= 10;
                }
            }
            else
            {
                if (outputMetric == "cm") {
                    number *= 100;
                }
                else
                {
                    number *= 1000;
                }
            }
            Console.WriteLine($"{ number:f3}");
        }
    }
}