sufisuf_isufi指后缀 sufi<sufj⟺ ?suf_i < suf_j \Longleftrightarrow ~~?sufi<sufj⟺ ? 最长公共前缀 of sufi and sufj=d⟺ ?~ of ~suf_i~and~suf_j =d\Longleftrightarrow ~~~? of sufi and sufj=d⟺ ? 我的意思是如何连边,玄两关