modlist = [[], [1], [2, 4, 8, 6], [3, 9, 7, 1], [4, 6], [5], [6], [7, 9, 3, 1], [8, 4, 2, 6], [9, 1]]

N = int(raw_input())
M = int(raw_input())

ans = 1
if M != 0:
	n = int(str(N)[-1])
	m = M - 1
	ans = modlist[n][m%len(modlist[n])]
print ans