摘要: 1400-1500 Codeforces Round #741 (Div. 2) C. Rings 1600-1700 Codeforces Round #515 (Div. 3) E. Binary Numbers AND Sum **思路:**对s2求前缀和,倒着遍历s1的字符串,当前遍历到i, 阅读全文
posted @ 2021-09-16 09:55 qingyanng 阅读(47) 评论(0) 推荐(0) 编辑