using System;
using System.Linq;
using System.Collections.Generic;
using static System.Console;

public class hello{
    public static void Main(){

        //No.388 階段 (1)
        var s = ReadLine().Trim().Split(' ').Select(int.Parse).ToArray(); 
        var st = s[0];//39
        var f = s[1]; //10
        
        WriteLine(Math.Floor((double)st/f) + 1    );
        
        /*
        long count=0;
        while(st>0){
            count++;
             st -= f;
            if( st < 0) break; 
        }
        WriteLine(count);
        */
    }
}