摘要: 链接 https://www.lydsy.com/JudgeOnline/problem.php?id=2870 思路 先把树转化为二叉树 再链分治 %%yyb 代码 cpp include include include include include include define ll long 阅读全文
posted @ 2019-02-13 10:05 ComplexPug 阅读(348) 评论(0) 推荐(0) 编辑