装得下和装不下

运行下面这段程序，填写它打印出来的结果。

BLK = 4
LINES = 4

def cache(addrs):
    tags = [-1] * LINES
    hit = 0
    miss = 0
    for a in addrs:
        b = a // BLK
        line = b % LINES
        if tags[line] == b:
            hit = hit + 1
        else:
            miss = miss + 1
            tags[line] = b
    return hit, miss

a = cache(list(range(16)) * 2)
b = cache(list(range(32)) * 2)
print(str(a[1]) + "/" + str(b[1]) + "/" + str(b[1] // a[1]))