随笔分类 -  思维

Codeforces Round #658 (Div. 2) Sequential Nim
摘要：There are nn piles of stones, where the ii -th pile has aiai stones. Two people play a game, where they take alternating turns removing stones. In a m 阅读全文
posted @ 2020-07-22 23:46 璃灵 阅读(113) 评论(0) 推荐(0)
Gym - 102569J The Battle of Mages
摘要：Two mages play the game. Both of them has their own set of creatures. Each creature is characterized by the integer — its strength. At the beginning o 阅读全文
posted @ 2020-07-15 23:46 璃灵 阅读(525) 评论(0) 推荐(0)
Gym - 102569H Tree Painting
摘要：You are given a tree with nn vertices and (n−1)(n−1) edges. At the beginning its edges and vertices are not painted. You can perform the following ope 阅读全文
posted @ 2020-07-15 23:41 璃灵 阅读(401) 评论(0) 推荐(0)
Gym - 102569K Table
摘要：There are 4 bars, possibly, having different lengths. Can they be used as the legs of the table, such that: The legs stay vertically in the vertices o 阅读全文
posted @ 2020-07-15 22:06 璃灵 阅读(233) 评论(0) 推荐(0)
2020牛客暑期多校训练营（第二场）C Cover the Tree
摘要：———————————————————————————————————————————————————————————— 今天的签到题就是手速题，除了签到最简单就是这道的（虽然过的人不多，但是真的简单）。 emmm手推+大胆猜测得出dfs序（其实比赛的时候没有意识到是dfs序，但是不碍事），后来发现 阅读全文
posted @ 2020-07-13 23:52 璃灵 阅读(194) 评论(0) 推荐(0)
2020牛客暑期多校训练营（第一场）F Infinite String Comparision
摘要：最后有个>没截全。 ———————————————————————————————————————————————————————————————————————— 签到题，全场唯一会做。思路是对的，代码码歪了。 直接补是不行的，样例3很明显了。重复两次再补足就ok了。但是码歪了。 看了一下别人的代 阅读全文
posted @ 2020-07-13 00:19 璃灵 阅读(198) 评论(0) 推荐(0)