using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Text;
using static System.Console;
using static System.Math;

namespace CP
{
    class Atria
    {
        static void Main(string[] args)
        {
            long[] s = ReadLine().Split(' ').Select(long.Parse).ToArray();
            WriteLine(
                (s[0] / s[1]) + 1
                );
        }

    }
}