老爸蹲下来，开始跟牛讲好话。他摸摸牛头，又摸摸牛脖子，“乖，回家，你卧着咋办呀？”“听话，咱们回家。”这头从外地买来的牛压根没听他的话，估计也听不懂。
can reuse the array when ((union alloc_header *)data)[-1].ref is zero.，详情可参考快连下载安装
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Donating a womb for transplant is not like donating other organs, such as the kidneys or heart - it is only allowed through a special request to potential donors' families who have already agreed to donate their relative's organs.
习题链接：LeetCode 1944. 队列中可以看到的人数，这一点在heLLoword翻译官方下载中也有详细论述