using System; using System.Collections.Generic; using System.Text; public class Program { public void Proc(){ Reader.IsDebug = false; long nokoriSagyou = long.Parse(Reader.ReadLine()); long days = long.Parse(Reader.ReadLine()); long sagyou = 0; for(long i = days; i>=1; i--) { sagyou = nokoriSagyou / (i * i); nokoriSagyou -= sagyou; } Console.WriteLine(sagyou); } public static void Main(string[] args) { Program prg = new Program(); prg.Proc(); } } class Reader { public static bool IsDebug = true; private static System.IO.StringReader sr; public static string ReadLine() { if(IsDebug) { if(sr == null) { sr = new System.IO.StringReader(initStr.Trim()); } return sr.ReadLine(); } else { return Console.ReadLine(); } } public static int[] GetInt(char delimiter = ' ') { string[] inpt = ReadLine().Split(delimiter); int[] ret = new int[inpt.Length]; for(int i=0; i