Dogs act like toddlers when you need help - but cats just watch. Scientists compared 3 groups: pet dogs, cats, and human toddlers in an experiment where a human parent hides and pretends to look for an object. 75% of dogs and children helped. Cats only helped if it was in their personal interest.

· · 来源:maker资讯

Paul Costelloe's son pays tribute

BBC紀錄片:暗處的鏡頭——調查中國酒店偷拍影片黑市

Matthew Li,详情可参考夫子

Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04

* 核心思路:单调递减栈(找「上一个比当前价格大的元素索引」),时间复杂度O(n),空间复杂度O(n)

Why is HMR

Our digitised version of the FT newspaper, for easy reading on any device.