2017年2月3日
HDU-1520 Anniversary party (树形DP）
摘要： Problem Description There is going to be a party to celebrate the 80-th Anniversary of the Ural State University. The University has a hierarchical st 阅读全文
posted @ 2017-02-03 02:03 Robin! 阅读(182) 评论(0) 推荐(0) 编辑