垫开之后

运行下面这段程序，填写它打印出来的结果。

BLK = 4

def traffic(seq):
    owner = {}
    moves = 0
    for core, addr in seq:
        b = addr // BLK
        if owner.get(b, -1) != core:
            moves = moves + 1
            owner[b] = core
    return moves

bad = []
good = []
for _ in range(5):
    bad.append((0, 0))
    bad.append((1, 1))
    good.append((0, 0))
    good.append((1, 4))
print(str(traffic(bad)) + "/" + str(traffic(good)))