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

namespace yukicoderTest
{
    class Program
    {
        static void Main(string[] args)
        {
            string N = Console.ReadLine();
            string M = Console.ReadLine();
            long yosan = long.Parse(N);
            long num = long.Parse(M);
            long ans = yosan / num;
            if (ans.ToString().Length > 3)
            {
                for (int i = 0; i < ans.ToString().Length - 3; i++)
                {
                    Console.Write(ans.ToString().Substring(i, 1));
                }
                Console.WriteLine("000");
            }
            else
            {
                Console.WriteLine("0");
            }
        }
        
    }
}