using System;

namespace MetricsConverter
{
    class Program
    {
        static void Main(string[] args)
        {
            double num = double.Parse(Console.ReadLine());
            string unit = Console.ReadLine();
            string unit2 = Console.ReadLine();
            if (unit == "m")
            {
                if (unit2 == "cm")
                    num =num * 100;
            else if (unit2 == "mm")
                    num =num * 1000;

            }
            else if (unit == "mm")
            {
                if (unit2 == "cm")
                    num =num / 10;
              else if (unit2 == "m")
                    num =num/1000;

            }
            else if (unit == "cm")
            {
                if (unit2 == "m")
                    num =num / 100;
				else if (unit2 == "mm")
                    num =num * 10;
            }
            Console.WriteLine($"{num:F3}");
        }
    }
}