metric

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

namespace Metric_Converter
{
    class Program
    {
        static void Main(string[] args)
        {
            double numForTransformation = double.Parse(Console.ReadLine());
            string inputValue = Console.ReadLine();
            string outputValue = Console.ReadLine();

            double velueCm = 0;

            if (inputValue=="mm")
            {
                 velueCm = numForTransformation / 10;
            }
            else if (inputValue=="cm")
            {
                 velueCm = numForTransformation * 1;
            }
            else if (inputValue=="m")
            {
                 velueCm = numForTransformation *100.00;
            }
            double mirrorVelue = 0;

            if (outputValue=="mm")
            {
                mirrorVelue = velueCm * 10;
            }
            else if (outputValue=="m")
            {
                mirrorVelue = velueCm / 100;
            }
            else if (outputValue=="cm")
            {
                mirrorVelue = velueCm * 1;
            }

            Console.WriteLine($"{mirrorVelue:F3}");
        }
    }
}