But as he hard launches his music career, the 21-year-old knows he can't escape his identity, so he might as well embrace it.
The tree behind the grid
。关于这个话题，safew官方版本下载提供了深入分析
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// 核心过滤：弹出栈中「≤当前元素」的数（易错点2：必须是≤，不是<）
// 逻辑：count（矮个子数） + （栈非空则+1，代表能看到第一个更高的人；否则+0）