using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace yukicoder_51 {
    class Program {
        static void Main(string[] args) {
            long w = long.Parse(Console.ReadLine());
            long d = long.Parse(Console.ReadLine());
            double l;
            for (; d > 1; d--) {
                l = w / (d * d);
                l = Math.Floor(l);
                w -= (int)l;
            }
            Console.WriteLine(w);
            Console.ReadLine();
        }
    }
}