2020年6月15日
C - Vacation
摘要： Problem Statement Taro's summer vacation starts tomorrow, and he has decided to make plans for it now. The vacation consists of NN days. For each ii ( 阅读全文
posted @ 2020-06-15 12:19 DeaL57 阅读(222) 评论(0) 推荐(0) 编辑
A - Frog 1
摘要： Problem Statement There are NN stones, numbered 1,2,…,N1,2,…,N. For each ii (1≤i≤N1≤i≤N), the height of Stone ii is hihi. There is a frog who is initi 阅读全文
posted @ 2020-06-15 09:15 DeaL57 阅读(329) 评论(0) 推荐(0) 编辑
D. Prime Graph
摘要： Every person likes prime numbers. Alice is a person, thus she also shares the love for them. Bob wanted to give her an affectionate gift but couldn't 阅读全文
posted @ 2020-06-15 08:33 DeaL57 阅读(220) 评论(0) 推荐(0) 编辑