using System;
using System.Collections.Generic;
using System.Linq;
public class Program{
    public static void Main(){
        var w = int.Parse(Console.ReadLine());
        var d = int.Parse(Console.ReadLine());
        while(d>1){
            w -= (int)Math.Truncate(w/Math.Pow(d,2));
            d--;
        }
        Console.WriteLine(w);
    }
}