metricconverter

using System;

namespace MetricConverter
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            double amount = double.Parse(Console.ReadLine());
            string inValue = Console.ReadLine();
            string outValue = Console.ReadLine();

            double result = 0;

            switch(inValue)
            {
                case "m":
                    switch (outValue)
                    {
                        case "m": result = amount;break;
                        case "mm": result = amount*1000;break;
                        case "cm": result = amount*100;break;
                        case "mi": result = amount*0.000621371192;break;
                        case "in": result = amount*39.3700787;break;
                        case "km": result = amount*0.001;break;
                        case "ft":result = amount*3.2808399;break;
                        case "yd": result = amount*1.0936133;break;
                    }break;
                    case "mm":
                    switch (outValue)
                    {
                        case "mm": result = amount; break;
                        case "m": result = amount / 1000;break;
                        case "cm": result = amount / 1000 * 100;break;
                        case "mi": result = amount / 1000 * 0.000621371192;break;
                        case "in": result = amount / 1000 * 39.3700787;break;
                        case "km": result = amount / 1000 * 0.001;break;
                        case "ft": result = amount / 1000 * 3.2808399;break;
                        case "yd": result = amount / 1000 * 1.0936133;break;
                    }break;
                    case "cm":
                    switch (outValue)
                    {
                        case "cm": result = amount; break;
                        case "m": result = amount / 100;break;
                        case "mm": result = amount / 100 * 1000;break;
                        case "mi": result = amount / 100 * 0.000621371192;break;
                        case "in": result = amount / 100 * 39.3700787;break;
                        case "km": result = amount / 100 * 0.001;break;
                        case "ft": result = amount / 100 * 3.2808399;break;
                        case "yd": result = amount / 100 * 1.0936133;break;
                    }break;
                    case "mi":
                    switch (outValue)
                    {
                        case "mi": result = amount; break;
                        case "m": result = amount / 0.000621371192;break;
                        case "mm": result = amount / 0.000621371192 * 1000;break;
                        case "cm": result = amount / 0.000621371192 * 100;break;
                        case "in": result = amount / 0.000621371192 * 39.3700787;break;
                        case "km": result = amount / 0.000621371192 * 0.001;break;
                        case "ft": result = amount / 0.000621371192 * 3.2808399;break;
                        case "yd": result = amount / 0.000621371192 * 1.0936133;break;
                    }break;
                    case "in":
                    switch (outValue)
                    {
                        case "in": result = amount; break;
                        case "m": result = amount / 39.3700787;break;
                        case "mm": result = amount / 39.3700787 * 1000;break;
                        case "cm": result = amount / 39.3700787 * 100;break;
                        case "mi": result = amount / 39.3700787 * 0.000621371192;break;
                        case "km": result = amount / 39.3700787 * 0.001;break;
                        case "ft": result = amount / 39.3700787 * 3.2808399;break;
                        case "yd": result = amount / 39.3700787 * 1.0936133;break;
                    }break;
                    case "km":
                    switch (outValue)
                    {
                        case "km": result = amount; break;
                        case "m": result = amount / 0.001;break;
                        case "mm": result = amount / 0.001 * 1000;break;
                        case "cm": result = amount / 0.001 * 100;break;
                        case "mi": result = amount / 0.001 * 0.000621371192;break;
                        case "in": result = amount / 0.001 * 39.3700787;break;
                        case "ft": result = amount / 0.001 * 3.2808399;break;
                        case "yd": result = amount / 0.001 * 1.0936133;break;
                    }break;
                    case "ft":
                    switch (outValue)
                    {
                        case "ft": result = amount; break;
                        case "m": result = amount / 3.2808399;break;
                        case "mm": result = amount / 3.2808399 * 1000;break;
                        case "cm": result = amount / 3.2808399 * 100;break;
                        case "mi": result = amount / 3.2808399 * 0.000621371192;break;
                        case "in": result = amount / 3.2808399 * 39.3700787;break;
                        case "km": result = amount / 3.2808399 * 0.001;break;
                        case "yd": result = amount / 3.2808399 * 1.0936133;break;
                    }break;
                    case "yd":
                    switch (outValue)
                    {
                        case "yd": result = amount; break;
                        case "m": result = amount / 1.0936133;break;
                        case "mm": result = amount / 1.0936133 * 1000;break;
                        case "cm": result = amount / 1.0936133 * 100;break;
                        case "mi": result = amount / 1.0936133 * 0.000621371192;break;
                        case "in": result = amount / 1.0936133 * 39.3700787;break;
                        case "km": result = amount / 1.0936133 * 0.001;break;
                        case "ft": result = amount / 1.0936133 * 3.2808399;break;
                    }break;
            }
            Console.WriteLine($"{result} {outValue}");
        }
    }
}