2020年10月19日
Codeforces Round #340 (Div. 2) E. XOR and Favorite Number （莫队）
摘要： ##题面 Bob has a favorite number k and ai of length n. Now he asks you to answer m queries. Each query is given by a pair li and ri and asks you to coun 阅读全文
posted @ 2020-10-19 10:38 Luglucky 阅读(89) 评论(0) 推荐(0) 编辑