N = int(input()[-1])
Mstr = input()
M = int(Mstr[-2:])
if Mstr == '0':
	print(1)
elif N in (0, 1, 5, 6):
	print(N)
elif N == 2:
	print([2, 4, 8, 6][(M-1) % 4])
elif N == 3:
	print([3, 9, 7, 1][(M-1) % 4])
elif N == 4:
	print([4, 6][(M-1) % 2])
elif N == 7:
	print([7, 9, 3, 1][(M-1) % 4])
elif N == 8:
	print([8, 4, 2, 6][(M-1) % 4])
elif N == 9:
	print([9, 1][(M-1) % 2])

# 0 -> 0
# 1 -> 1
# 2 -> 4 -> 8 -> 6 -> 2
# 3 -> 9 -> 7 -> 1 -> 3
# 4 -> 6 -> 4
# 5 -> 5
# 6 -> 6
# 7 -> 9 -> 3 -> 1 -> 7
# 8 -> 4 -> 2 -> 6 -> 8
# 9 -> 1 -> 9