MetricConverter

using System;

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 == "km") size = size / 0.001;
else if (sourceMetric == "mm") size = size / 1000;
else if (sourceMetric == "cm") size = size / 100;
else if (sourceMetric == "mi") size = size / 0.000621371192;
else if (sourceMetric == "in") size = size / 39.3700787;
else if (sourceMetric == "ft") size = size / 3.2808399;
else if (sourceMetric == "yd") size = size / 1.0936133;
else if (sourceMetric == "m") size = size * 1;

if (destMetric == "km") size = size * 0.001;
else if (destMetric == "mm") size = size * 1000;
else if (destMetric == "cm") size = size * 100;
else if (destMetric == "mi") size = size * 0.000621371192;
else if (destMetric == "in") size = size * 39.3700787;
else if (destMetric == "ft") size = size * 3.2808399;
else if (destMetric == "yd") size = size * 1.0936133;
else if (destMetric == "m") size = size * 1;

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