相机：观众的眼睛。这里用的是 PerspectiveCamera（透视相机）。
▲提示词：A photo of an everyday scene at a busy cafe serving breakfast. In the foreground is an anime man with blue hair, one of the people is a pencil sketch, another is a claymation person
。业内人士推荐Line官方版本下载作为进阶阅读
思路：先对 nums2 用单调栈求每个元素的下一个更大值，存入 Map 缓存；再遍历 nums1 直接查 Map 得结果。时间复杂度 O(len1 + len2)。
Descending into the windowless basement of a second world war air-raid bunker built for civilians in central Berlin is arguably an eerie enough evocation of what it means to endure life in a conflict.