using System;

namespace JustLikethat
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            var number = double.Parse(Console.ReadLine());
            var input = Console.ReadLine();
            var output = Console.ReadLine();


            switch (input)
            {
                case "m":; break;
                case "mm": number = number / 1000; break;
                case "cm": number = number / 100; break;
                case "mi": number = number / 0.000621371192; break;
                case "in": number = number / 39.3700787; break;
                case "km": number = number / 0.001; break;
                case "ft": number = number / 3.2808399; break;
                case "yd": number = number / 1.0936133; break;
                default:; break;
            }
            switch (output)
            {
                case "m": number = number * 1; break;
                case "mm": number = number * 1000; break;
                case "cm": number = number * 100; break;
                case "mi": number = number * 0.000621371192; break;
                case "in": number = number * 39.3700787; break;
                case "km": number = number * 0.001; break;
                case "ft": number = number * 3.2808399; break;
                case "yd": number = number * 1.0936133; break;
                default:; break;
            }
            Console.WriteLine("{0}{1}" , number , output);
        }
    }
}