摘要: 原题链接:http://codeforces.com/problemset/problem/271/D 题目原文: D. Good Substrings time limit per test 2 seconds memory limit per test 512 megabytes input s 阅读全文
posted @ 2018-03-10 16:43 Smile590 阅读(364) 评论(0) 推荐(0) 编辑