Problem Description John is a manager of a CPU chip factory, the factory produces lots of chips everyday. To manage large amounts of products, every processor has a serial number. More specifically, the factory produces n chips today, the i-th chip p…

链接:http://acm.hdu.edu.cn/showproblem.php?pid=5536 题面; Chip Factory Time Limit: 18000/9000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 6277    Accepted Submission(s): 2847 Problem Description John is a manager o…

题目传送门:http://acm.hdu.edu.cn/showproblem.php?pid=5536 Chip Factory Time Limit: 18000/9000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 4915    Accepted Submission(s): 2205 Problem Description John is a manager of…

<题目链接> 题目大意: 给定一个数字序列,让你从中找出三个不同的数,从而求出:$\max_{i,j,k} (s_i+s_j) \oplus s_k$的值. 解题分析:先建好01字典树,然后枚举两个不同的数,从字典树中删除这两个数,然后进行匹配,找到能够使 $ (s_i+s_j) \oplus s_k$ 值最大的值.之后再将这两个数插入,进行下一轮询问. #include <bits/stdc++.h> using namespace std; #define clr(a,b) m…

给你n个数,a1....an,求(ai+aj)^ak最大的值,i不等于j不等于k 思路:先建字典树,暴力i,j每次删除他们,然后贪心找k,再恢复i,j,每次和答案取较大的,就是答案,有关异或的貌似很多都用字典树,也是醉了 /*Problem : 5536 ( Chip Factory ) Judge Status : Accepted RunId : 15506230 Language : G++ Author : qianbi08*/ #include<iostream> #include&…

题意: 给一个集合,多次询问,每次给一个k,问你集合和k异或结果最大的哪个 题解: 经典的01字典树问题,学习一哈. 把一个数字看成32位的01串,然后查找异或的时候不断的沿着^为1的路向下走即可 #include <bits/stdc++.h> #define endl '\n' #define IO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0) #define rep(ii,a,b) for(int ii=a;ii<=b;++i…

Chip Factory Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=5536 Description John is a manager of a CPU chip factory, the factory produces lots of chips everyday. To manage large amounts of products, every proc…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=5536 题目大意是给了一个序列,求(si+sj)^sk的最大值. 首先n有1000,暴力理论上是不行的. 此外题目中说大数据只有10组,小数据最多n只有100.(那么c*n^2的复杂度应该差不多) 于是可以考虑枚举i和j,然后匹配k. 于是可以先把所有s[k]全部存进一个字典树, 然后枚举s[i]和s[j],由于i.j.k互不相等,于是先从字典树里面删掉s[i]和s[j],然后对s[i]+s[j]这个…

Chip Factory Time Limit: 18000/9000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 1842    Accepted Submission(s): 833 Problem Description John is a manager of a CPU chip factory, the factory produces lots of chip…

传..传送:http://acm.hdu.edu.cn/showproblem.php?pid=5687 Problem C Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 131072/131072 K (Java/Others)Total Submission(s): 2697    Accepted Submission(s): 743 Problem Description 度熊手上有一本神奇的字典,你可以在它里面做如下三个…