2017年4月3日
#404 （div2）Anton and Permutation (分块处理）
摘要： Anton likes permutations, especially he likes to permute their elements. Note that a permutation of n elements is a sequence of numbers {a1, a2, ...,  阅读全文
posted @ 2017-04-03 18:00 Wally的博客 阅读(263) 评论(0) 推荐(0)
#404 （div2）Anton and School - 2
摘要： As you probably know, Anton goes to school. One of the school subjects that Anton studies is Bracketology. On the Bracketology lessons students usuall 阅读全文
posted @ 2017-04-03 15:16 Wally的博客 阅读(161) 评论(0) 推荐(1)