if __name__ == "__main__":
    n = int(input()) % 10
    m = int(input())

    if m == 0:
        print(n ** m)
    elif n == 0 or n == 1 or n == 5 or n == 6:
        print(n)
    else:
        d = {2 : [2, 4, 8, 6],
             3 : [3, 9, 7, 1],
             4 : [4, 6],
             7 : [7, 9, 3, 1],
             8 : [8, 4, 2, 6],
             9 : [9, 1]
            }
        no = d[n]
        print(no[(m - 1) % len(no)])