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

    """
    l = [0, 1, 6, 1, 6, 5, 6, 1, 6, 1]

    if m <= 1:
        print(n ** m)
    else:
        print(l[n % 10])
    """
    print(((n % 10) ** m) % 10)