摘要: This is just sad. Wait, no, not just sad. Sad and enraging. Great job! -- Um_nik A. Long Shuffle (1600) 打表容易发现当 $n$ 为偶数时,对于所有 $k \in [1,n/2]$,$(A_{2k- 阅读全文
posted @ 2023-02-23 08:35 苹果蓝17 阅读(134) 评论(0) 推荐(0) 编辑