n=int(input())
m=int(input())
pos=n%10

if m==0:
 print(1)
else:
 if pos==0:
  print(0)
 elif pos==1:
  print(1)
 elif pos==2:
  if m%4==1:
   print(2)
  elif m%4==2:
   print(4)
  elif m%4==3:
   print(8)
  elif m%4==0:
   print(6)
 elif pos==3:
  if m%4==1:
   print(3)
  elif m%4==2:
   print(9)
  elif m%4==3:
   print(7)
  elif m%4==0:
   print(1)
 elif pos==4:
  if m%2==1:
   print(4)
  else :
   print(6)
 elif pos==5:
   print(5)
 elif pos==6:
  print(6)
 elif pos==7:
  if m%4==1:
   print(7)
  elif m%4==2:
   print(9) 
  elif m%4==3:
   print(3)
  elif m%4==0:
   print(1)
 elif pos==8:
  if m%4==1:
   print(8)
  elif m%4==2:
   print(4) 
  elif m%4==3:
   print(2)
  elif m%4==0:
   print(6)
 elif pos==9:
   if m%2==1:
    print(9)
   else :
    print(1)