You cannot catch shingles. It is an extremely painful condition that some people who have had chickenpox develop later in life.
return (PAGESZ - sizeof(struct page_info)) / sizes[classno];
。关于这个话题，雷电模拟器官方版本下载提供了深入分析
* 1. 转换视角：将"追车"问题转为"到达时间"比较（后车时间≤前车 → 合并）；
// 2. 计算前缀和：count[i]表示<=i的元素个数