2022年10月9日
Codeforces：B. New Year and Ascent Sequence[模拟]
摘要： ##题面 A sequence a=[a1,a2,…,al] of length l has an ascent if there exists a pair of indices (i,j) such that 1≤i<j≤l and ai<aj. For example, the sequenc 阅读全文
posted @ 2022-10-09 21:37 ancer 阅读(45) 评论(0) 推荐(0)