while 1:
 try:
  a,b=map(int,input().split())
  c,d=map(int,input().split())
  e=a*d-b*c
  if e==0:
   print('cheat!')
  else:
   print('%.5f %.5f'%(d/e,-b/e))
   print('%.5f %.5f'%(-c/e,a/e))
 except:
  break