* 时间复杂度：O(n log n)（主要来自排序），空间复杂度：O(n)
Selfridge took his first flight on December 6, 1907, on a Bell's tetrahedral kite, rising to 168 feet (51 m) in the air above Bras d'Or Lake in Nova Scotia, Canada. This was the first recorded passenger flight of any heavier-than-air craft in Canada.，推荐阅读新收录的资料获取更多信息
。业内人士推荐新收录的资料作为进阶阅读
Read full article
No other details provided.，详情可参考新收录的资料
Tributes have been paid to a young British hiker who was among 19 people killed when a packed passenger bus veered off a treacherous stretch of road and plunged 200 metres down a steep mountainside in Nepal.