S = "428571"
N = input()
K = input()
n = 0
t = 1
for s in reversed(N):
    n += int(s) * t
    n %= 6
    t *= 10
    t %= 6
if n == 2 and int(K[-1]) % 2 == 0:
    print(S[4])
elif n == 5 and int(K[-1]) % 2 == 0:
    print(S[1])
else:
    print(S[n])