n_str = input().strip()
k_str = input().strip()

# Step 1: Compute N mod 6
a = 0
for c in n_str:
    a = (a * 10 + int(c)) % 6

# Step 2: Determine if K is even or odd (K mod 2)
k_parity = int(k_str[-1]) % 2 if k_str else 0

# Step 3: Determine remainder based on a and k_parity
remainder = 0
if a == 0:
    remainder = 0
elif a == 1:
    remainder = 1
elif a == 2:
    remainder = 2 if k_parity else 4
elif a == 3:
    remainder = 3
elif a == 4:
    remainder = 4
elif a == 5:
    remainder = 5 if k_parity else 1

# Mapping remainders to their respective digits in the cycle "285714"
digits_order = [4, 2, 8, 5, 7, 1]
print(digits_order[remainder])