2021年12月24日
【CF4D Mysterious Present】题解
摘要： 题目链接 题目 Peter decided to wish happy birthday to his friend from Australia and send him a card. To make his present more mysterious, he decided to make 阅读全文
posted @ 2021-12-24 19:02 zhangtingxi 阅读(126) 评论(0) 推荐(0)
【CF3D Least Cost Bracket Sequence】题解
摘要： 题目链接 题目 This is yet another problem on regular bracket sequences. A bracket sequence is called regular, if by inserting "+" and "1" into it we get a c 阅读全文
posted @ 2021-12-24 18:32 zhangtingxi 阅读(95) 评论(0) 推荐(0)