四条指令，两种走法

运行下面这段程序，填写它打印出来的结果。

STAGES = 5
FLUSH = 3

def pipelined(n):
    return n + STAGES - 1

def wrong_guesses(pattern):
    last = -1
    wrong = 0
    for t in pattern:
        if last == -1 or t != last:
            wrong = wrong + 1
        last = t
    return wrong

n = 4
print(str(n * STAGES) + "/" + str(pipelined(n)) + "/"
      + str(round(n * STAGES / pipelined(n), 2)))