SN = input()
SM = input()

if SM == '0':
    ans = 1
else:
    N = int(SN[-1])
    r = [
            [0, 0, 0, 0],
            [1, 1, 1, 1],
            [6, 2, 4, 8],
            [1, 3, 9, 7],
            [6, 4, 6, 4],
            [5, 5, 5, 5],
            [6, 6, 6, 6],
            [1, 7, 9, 3],
            [6, 8, 4, 2],
            [1, 9, 1, 9]
    ]
    x = int(SM[-2:])
    ans = r[N][x%4]
print(ans)