摘要: 链接w:http://www.lydsy.com/JudgeOnline/problem.php?id=3489 题解:http://blog.csdn.net/PoPoQQQ/article/details/42104273 QwQ树套树好容易T啊,于是在磊少的带领下爽卡一波常数~     阅读全文
posted @ 2016-03-14 10:17 Lukaluka 阅读(296) 评论(0) 推荐(0) 编辑