多校 - 随笔分类 - _fukua

hdu 5382 GCD?LCM!

摘要：先考虑化简f函数发现，f函数可以写成一个递归式，化简后可以先递推求出所有f函数的值，所以可以先求出所有S函数的值，对于询问，O(1)回答代码： //File Name: hdu5382.cpp //Author: long //Mail: 736726758@qq.com //Created 阅读全文

posted @ 2016-10-26 14:44 _fukua 阅读(261) 评论(0) 推荐(0)

hdu 5288 OO’s Sequence 枚举+二分

摘要：Problem DescriptionOO has got a array A of size n ,defined a function f(l,r) represent the number of i (li) satisfy aimod aj=0,now OO want to know∑i=1... 阅读全文

posted @ 2015-10-06 01:35 _fukua 阅读(224) 评论(0) 推荐(0)

HDU 5289 2015 Multi-University Training Contest 1 1002 RMQ+二分

摘要：AssignmentTime Limit: 4000/2000 MS (Java/Others)Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1758Accepted Submissio... 阅读全文

posted @ 2015-07-25 12:48 _fukua 阅读(194) 评论(0) 推荐(0)

HDU 5294 多校第一场1007题最短路+最小割

摘要：Tricks DeviceTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1285Accepted Subm... 阅读全文

posted @ 2015-07-22 19:51 _fukua 阅读(370) 评论(0) 推荐(0)

随笔分类 - 多校