分类： Codeforces

E. Forensic Examination Translation 给定一个串S和若干个串Ti 每次询问S […]...

Description Gosha is hunting. His goal is to catch as m […]...

dsu on tree的本质是树上的启发式合并，它利用启发式合并的思想，可以将的暴力优化成，用于不带修改的子树 […]...