N = int(input()[-1])
M = input()
if N == 5 and M[-1] == "0":
    print(5)
    exit()
if M == "0":
    print(1)
    exit()
if N == 0:
    print(0)
    exit()
ans2 = 1
if len(M) > 2:
    M = int(M[len(M) - 2:])
    ans2 = 6
else:
    M = int(M)
if N % 2 == 0:
    print((ans2 * N ** M) % 10)
else:
    print((N ** M) % 10)