随笔分类 -  hdu

【可持久化Trie】bzoj 3261 hdu 6191
摘要：https://www.cnblogs.com/zcysky/p/6910661.html 江山自有人才出，写的很漂亮，代码一看就懂 bzoj 3261有个坑，就是要把第零个数字也加到trie里，否则可能漏算or算错 bzoj 3261代码 插入的是前缀和，查询的是x^sum[n],贪心得到结果就相 阅读全文
posted @ 2018-04-02 19:40 岚之川 阅读(141) 评论(0) 推荐(0)
hdu 5839 Special Tetrahedron 计算几何 求特殊四面体个数
摘要：Special Tetrahedron Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 175 Accepted Submission(s): 6 阅读全文
posted @ 2016-08-14 22:11 岚之川 阅读(227) 评论(0) 推荐(0)
hdu4901 The Romantic Hero 计数dp
摘要：The Romantic Hero Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 1797 Accepted Submission(s): 阅读全文
posted @ 2016-07-29 23:03 岚之川 阅读(144) 评论(0) 推荐(0)