综合
Codeforces Beta Round 7 D Palindrome Degree
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题目 源地址: http://codeforces.com/problemset/problem/7/D 理解 被引入的新概念吓到了= =,...
原文:https://xuanwo.io/2014/11/16/cf-7d/上一篇Codeforces Beta Round 9 D How many trees? (Div.2 Only)下一篇Codeforces Beta Round 8 B Obsession with Robots
