2024年12月16日
Insane Problem(思维)
摘要： Wave is given five integers \(k\), \(l_1\), \(r_1\), \(l_2\), and \(r_2\). Wave wants you to help her count the number of ordered pairs \((x, y)\) suc 阅读全文
posted @ 2024-12-16 12:41 shen_kong 阅读(135) 评论(0) 推荐(0)