def get_answer(n, m):
    if m == 0:
        return 1
    else:
        if n == 0:
            return 0
        if n == 1:
            return 1
        if n == 2:
            if m % 4 == 1:
                return 2
            elif m % 4 == 2:
                return 4
            elif m % 4 == 3:
                return 8
            else:
                return 6
        if n == 3:
            if m % 4 == 1:
                return 3
            elif m % 4 == 2:
                return 9
            elif m % 4 == 3:
                return 7
            else:
                return 1
        if n == 4:
            if m % 2 == 1:
                return 4
            else:
                return 6
        if n == 5:
            return 5
        if n == 6:
            return 6
        if n == 7:
            if m % 4 == 1:
                return 7
            elif m % 4 == 2:
                return 9
            elif m % 4 == 3:
                return 3
            else:
                return 1
        if n == 8:
            if m % 4 == 1:
                return 8
            elif m % 4 == 2:
                return 4
            elif m % 4 == 3:
                return 2
            else:
                return 6
        if n == 9:
            if m % 2 == 1:
                return 9
            else:
                return 1

def main():

    n = input()
    m = int(input())
    num = int(n[-1])
    ans = get_answer(num, m)
    print(ans)

if __name__ == '__main__':
    main()