# coding: utf-8
#yuki_167

n=int(raw_input())
m=int(raw_input())

if m==0: res=1
elif n%10==0: res=0
elif n%10==1: res=1
elif n%10==2:
 if m%4==1: res=2
 elif m%4==2: res=4
 elif m%4==3: res=8
 elif m%4==0: res=6
elif n%10==3:
 if  m%4==1: res=3
 elif m%4==2: res=9
 elif m%4==3: res=7
 elif m%4==0: res=1
elif n%10==4:
 if m%2==1: res=4
 elif m%2==0: res=6
elif n%10==5:
 res=5
elif n%10==6:
 res=6
elif n%10==7:
 if m%4==1: res=7
 elif m%4==2: res=9
 elif m%4==3: res=3
 elif m%4==0: res=1
elif n%10==8:
 if m%4==1: res=8
 elif m%4==2: res=4
 elif m%4==3: res=2
 elif m%4==0: res=6
elif n%10==9:
 if m%2==1: res=9
 elif m%2==0: res=1
elif m%10==0:
 res=0

print res