using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    static string InputPattern = "InputX";

    static List<string> GetInputList()
    {
        var WillReturn = new List<string>();

        if (InputPattern == "Input1") {
            WillReturn.Add("100 2");
            //100.666666666667
        }
        else if (InputPattern == "Input2") {
            WillReturn.Add("0 30");
            //10
        }
        else if (InputPattern == "Input3") {
            WillReturn.Add("114 514");
            //285.333333333333
        }
        else {
            string wkStr;
            while ((wkStr = Console.ReadLine()) != null) WillReturn.Add(wkStr);
        }
        return WillReturn;
    }

    static void Main()
    {
        List<string> InputList = GetInputList();
        int[] wkArr = InputList[0].Split(' ').Select(X => int.Parse(X)).ToArray();
        int M = wkArr[0];
        int N = wkArr[1];

        decimal Answer = M;
        for (int I = 1; I <= N; I++) {
            Answer += 1M / 3M;
        }
        Console.WriteLine(Answer);
    }
}