using System;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            int floor = 0;
            string[] strn = Console.ReadLine().Split(' ');
            int S = int.Parse(strn[0]);
            int F = int.Parse(strn[1]);
            Console.WriteLine(S / F + 1);
        }
    }
}