题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4908 BestCoder Sequence Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 618    Accepted Submission(s): 214 Problem Description Mr Potato is a code…

题目链接:HDOJ - 5160 题目分析 第一眼看上去,要求统计所有不同排列对答案的贡献.嗯...完全没有想法. 但是,如果我们对每个数字单独考虑,计算这个数字在总答案中的贡献,就容易多了. 对于一个数字 ai ,有 ni 个 .比它大的数字有 p 个,比它小的数字有 q 个.所有的数字一共有 N 个. 首先,比它小的数字对它不会造成影响,所以我们只要考虑它和比它大的数字.那么我们就在 N 个位置中,选 (ni + p) 个位置,给它和比它大的数字. 然后比它大的数字有 x1 种排列,比它小的…

BestCoder Sequence Problem Description Mr Potato is a coder. Mr Potato is the BestCoder. One night, an amazing sequence appeared in his dream. Length of this sequence is odd, the median number is M, and he named this sequence as Bestcoder Sequence. A…

A.预处理出来,0(1)输出. Task schedule Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 387    Accepted Submission(s): 193 Problem Description 有一台机器,而且给你这台机器的工作表.工作表上有n个任务,机器在ti时间运行第i个任务,1秒就可以完毕1个任务. 有m个…

HDOJ5054 Alice and Bob Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 302    Accepted Submission(s): 229 Problem Description Bob and Alice got separated in the Square, they agreed that if they…

Sequence  Accepts: 59  Submissions: 650  Time Limit: 2000/1000 MS (Java/Others)  Memory Limit: 65536/65536 K (Java/Others) Problem Description \ \ \ \    Holion August will eat every thing he has found. \ \ \ \    Now there are many foods,but he does…

1.BestCoder Round #89 2.总结:4个题,只能做A.B,全都靠hack上分.. 01  HDU 5944   水 1.题意:一个字符串,求有多少组字符y,r,x的下标能组成等比数列. 2.总结:有个坑,y,r,x顺序组公比q>1,也可反着来x,r,y顺序组. #include<iostream> #include<cstring> #include<cmath> #include<queue> #include<algorit…

BestCoder Round #90 本次至少暴露出三个知识点爆炸.... A. zz题 按题意copy  Init函数 然后统计就ok B. 博弈 题  不懂  推了半天的SG.....  结果这个题.... C 数据结构题   我写了半个小时分块   然后发现     改的是颜色.... 我的天  炸炸炸 D. 没看懂题目要干啥.....  官方题解要搞死小圆…

BestCoder Round #7 Start Time : 2014-08-31 19:00:00    End Time : 2014-08-31 21:00:00Contest Type : Register Public   Contest Status : Ended Current Server Time : 2014-08-31 21:12:12 Solved Pro.ID Title Ratio(Accepted / Submitted)   1001 Little Pony…

Time Limit: 3000/1500 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 354    Accepted Submission(s): 100 Problem Description ZYB has a tree with N nodes,now he wants you to solve the numbers of nodes distanced no m…