习题链接：LeetCode 1944. 队列中可以看到的人数
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，这一点在一键获取谷歌浏览器下载中也有详细论述
if (n <= 1) return;
民生无小事，枝叶总关情。“哪里有人民需要，哪里就能做出好事实事，哪里就能创造业绩。”
Last year, Ford set a new industry record: It issued 152 safety recalls, almost twice the previous high set by General Motors back in 2014. More than 24 million vehicles were recalled in the US last year, and more than half—13 million—were either Fords or Lincolns. By contrast, Tesla issued 11 recalls, affecting just 745,000 vehicles.