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6.2 inches (FHD+)。关于这个话题，heLLoword翻译官方下载提供了深入分析
Credit: Liam Daniel / Netflix，更多细节参见旺商聊官方下载
* 核心：倒序遍历2倍长度 + 取模模拟循环 + 单调栈，解决「首尾相连」的更大值问题
If an area does not have any color coding, it means there are no conditions on the portions of dominoes within those spaces.