2019年9月15日
2019ICPC沈阳网络赛-D-Fish eating fruit(树上DP, 换根, 点分治)
摘要： 链接: https://nanti.jisuanke.com/t/41403 题意: State Z is a underwater kingdom of the Atlantic Ocean. This country is amazing. There are nn cities in the 阅读全文
posted @ 2019-09-15 16:42 YDDDD 阅读(316) 评论(0) 推荐(0)