def main():

  ans_list = []
  yosan = int(input())
  ninzu = int(input())
  kinto = yosan//ninzu
  ketasu = len(str(kinto))
  bunkatsu = list(str(kinto))
  bunkatsu.reverse()
  for i, number in enumerate(bunkatsu):
    if i <= 2:
      number = 0
      ans_list.append(str(number))
    else:
      ans_list.append(str(number))
  ans_list.reverse()
  ans = "".join(ans_list)
  if int(ans) <1000:
    print(0)
  else:
    print(ans)
  
if __name__ == '__main__':
  main()