using System;
class Sample
{
    public static void Main()
    {
        string str = Console.ReadLine();
        string[] st = str.Split(" ");
        int a = int.Parse(st[0]);
        int b = int.Parse(st[1]);
        if (a % b == 0)
        {
            Console.WriteLine(a / b + 1);
        }
        else
        {
            Console.WriteLine(a / b + 2);
        }

    }
}