摘要: Codeforces 754E:Dasha and cyclic table 题目链接:http://codeforces.com/problemset/problem/754/E 题目大意:$A$矩阵($size(A)=n \times m$,仅含'a'-'z')在整个平面做周期延拓,问$B$矩阵 阅读全文
posted @ 2017-04-08 01:21 barriery 阅读(452) 评论(0) 推荐(1) 编辑