N = int(input())
M = int(input())
n = N % 10
m = M % 4
if M == 0:
    ans = 1
elif n == 0:
    ans = 0
elif n == 1:
    ans = 1
elif n == 2:
    if m == 1:
        ans = 2
    elif m == 2:
        ans = 4
    elif m == 3:
        ans = 8
    elif m == 0:
        ans = 6
elif n == 3:
    if m == 1:
        ans = 3
    elif m == 2:
        ans = 9
    elif m == 3:
        ans = 7
    elif m == 0:
        ans = 1
elif n == 4:
    if m == 1:
        ans = 4
    elif m == 2:
        ans = 6
    elif m == 3:
        ans = 4
    elif m == 0:
        ans = 6
elif n == 5:
    ans = 5
elif n == 6:
    ans = 6
elif n == 7:
    if m == 1:
        ans = 7
    elif m == 2:
        ans = 9
    elif m == 3:
        ans = 3
    elif m == 0:
        ans = 1
elif n == 8:
    if m == 1:
        ans = 8
    elif m == 2:
        ans = 4
    elif m == 3:
        ans = 2
    elif m == 0:
        ans = 6
elif n == 9:
    if m == 1:
        ans = 9
    elif m == 2:
        ans = 1
    elif m == 3:
        ans = 9
    elif m == 0:
        ans = 1
print(ans)