2019年5月7日
Queries for Number of Palindromes（区间dp）
摘要： You've got a string s = s1s2... s|s| of length |s|, consisting of lowercase English letters. There also are q queries, each query is described by two 阅读全文
posted @ 2019-05-07 16:50 black_hole6 阅读(199) 评论(0) 推荐(0)
Dungeon Master(三维bfs)
摘要： You are trapped in a 3D dungeon and need to find the quickest way out! The dungeon is composed of unit cubes which may or may not be filled with rock. 阅读全文
posted @ 2019-05-07 09:55 black_hole6 阅读(404) 评论(0) 推荐(0)