摘要: 题目大意:给定一个长为$n$($n\leq 10^6$)的序列S,定义一个合法的五元组$(a,b,c,d,e)$合法当且仅当 $$ ( S_a \mid S_b ) and S_c and ( S_d \bigotimes S_e ) = 2^k $$ $$ S_a and S_b = 0 $$ 对 阅读全文
posted @ 2018-07-24 21:03 OYJason 阅读(278) 评论(0) 推荐(0) 编辑