#coding:utf-8

def main():
    N = list(input())
    M = int(input())
    # n = int(N[-1])
    n = N % 10
    m = num(M)
    jn = judge(n, m)
    print(jn)


def num(M):
    return M % 4 - 1


def judge(n, m):
    d = {#0:[0],\
         #1:[1],\
         2:[2,4,8,6],\
         3:[3,9,7,1],\
         4:[4,6],\
         #5:[5],\
         #6:[6],\
         7:[7,9,3,1],\
         8:[8,4,2,6],\
         9:[9,1]}
    if n == 0 or 1 or 5 or 6:
        return n
    elif n == 4 or 9:
        m = m % 2
        return d[n][m]
    else:
        return d[n][m]


if __name__ == '__main__':
    main()