MetricConverter

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace MetricConverter
{
    class MetricConverter
    {
        static void Main(string[] args)
        {
            var size = double.Parse(Console.ReadLine());
            var sourceMetric = Console.ReadLine().ToLower();
            var destMetric = Console.ReadLine().ToLower();

            if(sourceMetric == "mm")
                size = size / 1000;
            if(sourceMetric == "cm")
                size = size / 100;
            if(sourceMetric == "mi")
                size = size / 0.000621371192;
            if(sourceMetric == "in")
                size = size / 39.3700787;
            if(sourceMetric == "km")
                size = size / 0.001;
            if(sourceMetric == "ft")
                size = size / 3.2808399;
            if(sourceMetric == "yd")
                size = size / 1.0936133;

            if(destMetric == "mm")
                size = size * 1000;
            if(destMetric == "cm")
                size = size * 100;
            if(destMetric == "mi")
                size = size * 0.000621371192;
            if(destMetric == "in")
                size = size * 39.3700787;
            if(destMetric == "km")
                size = size * 0.001;
            if(destMetric == "ft")
                size = size * 3.2808399;
            if(destMetric == "yd")
                size = size * 1.0936133;


            Console.WriteLine(size + " " + destMetric);

        }
    }
}