【kd-tree】bzoj3053 The Closest M Points

【【kd-tree】bzoj3053 The Closest M Points】的更多相关文章

【kd-tree】bzoj3053 The Closest M Points

同p2626.由于K比较小,所以不必用堆. #include<cstdio> #include<cstring> #include<cmath> #include<algorithm> using namespace std; typedef double db; #define N 50001 #define INF 2147483647.0 #define KD 5//Î¬¶ÈÊý int qp[KD]; int n,root,kd,K; int dn;…

【BZOJ】3053: The Closest M Points（kdtree）

http://www.lydsy.com/JudgeOnline/problem.php?id=3053 本来是1a的QAQ.... 没看到有多组数据啊.....斯巴达!!!!!!!!!!!!!!!!! 本题裸的kdtree,比上一题还要简单...................................... 对于当前点,判断进入左或右子树,然后看答案是否能过分割线..如果能,进入右或左子树.........并且如果答案个数小于k,也要进入.. 然后就浪吧........... #inc…

BZOJ3053:The Closest M Points(K-D Teee)

Description The course of Software Design and Development Practice is objectionable. ZLC is facing a serious problem .There are many points in K-dimensional space .Given a point. ZLC need to find out the closest m points. Euclidean distance is used a…

【HDOJ】4347 The Closest M Points

居然是KD解. /* 4347 */ #include <iostream> #include <sstream> #include <string> #include <map> #include <queue> #include <set> #include <stack> #include <vector> #include <deque> #include <algorithm>…

BZOJ3053: The Closest M Points

题解: 我们可以事先在堆里放入插入m个inf然后不断的比较当前值与堆首元素的大小,如果小于的话进入. 估计函数也可以随便写写... query的时候貌似不用保留dir... return 0写在 while 里面我也是醉了... 不用开long long为什么大家都开了... k-d tree助我进第一版代码: #include<cstdio> #include<cstdlib> #include<cmath> #include<cstring> #inc…

【Symmetric Tree】cpp

题目: Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center). For example, this binary tree is symmetric: 1 / \ 2 2 / \ / \ 3 4 4 3 But the following is not: 1 / \ 2 2 \ \ 3 3 Note:Bonus points if you could solve…

【Same Tree】cpp

题目: Given two binary trees, write a function to check if they are equal or not. Two binary trees are considered equal if they are structurally identical and the nodes have the same value. 代码: /** * Definition for a binary tree node. * struct TreeNode…