#coding: utf-8
##yuki_51

w=int(raw_input())
d=int(raw_input())

if d==1:
 print w

while d>1:
 rest=w*1.0/d**2
 if rest<1.0:
  d=d-1
  continue
 else:
  w=w-int(rest+0.000001)
 if d==2:
  print w
 d=d-1