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HDU 3709 Balanced Number 枚举+数位DP
枚举支点之后数位DP,注意姿势#include #include #include #include #include #include #include #include #include #include #include #include #include using namespace st...
分类:其他好文   时间:2014-08-02 18:11:43    阅读次数:301
SPOJ MULTQ3
/*sum[root][i]表示root节点的子叶子%3余i的总数 lazy懒惰标记*/ 1 #include 2 #include 3 using namespace std; 4 #define N 400010 5 int sum[N][3],lazy[N]; 6 void pushup(.....
分类:其他好文   时间:2014-08-02 17:51:03    阅读次数:270
SPOJ 8059. Stocks Prediction (矩阵嵌矩阵)
题目大意: 给出一个递推的关系。 这个递推的关系可以求出 s_1 s_2 s_3 .... s_m 然后再告诉一个 k 与 n 求出segma( s_k , s_2*k , s_3*k)...共n项。 思路分析: 首先给出来的是递推关系式。 所以可以用一个矩阵递推出 s [i]... 但是他要的是每隔k的值。 定义s的递推矩阵是 A SUM = S_k + S_2*...
分类:其他好文   时间:2014-08-02 12:49:03    阅读次数:219
SPOJ AMR10A Playground(计算几何)
Playground Time limit: 2s Source limit: 50000B Memory limit: 256MB My kid's school cleared a large field on their property recently to convert it into a play...
分类:其他好文   时间:2014-08-01 19:43:32    阅读次数:328
SPOJ AMR 10I Dividing Stones(搜索)
Dividing Stones Time limit: 7s Source limit: 50000B Memory limit: 256MB There are N stones, which can be divided into some piles arbitrarily. Let the v...
分类:其他好文   时间:2014-08-01 19:42:12    阅读次数:261
Convert Sorted List to Binary Search Tree leetcode java
题目:Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST.题解:之前做过一道是从sorted array转换到BinarySearc....
分类:编程语言   时间:2014-08-01 04:54:21    阅读次数:310
[leetcode]Balanced Binary Tree
Balanced Binary TreeGiven a binary tree, determine if it is height-balanced.For this problem, a height-balanced binary tree is defined as a binary tre...
分类:其他好文   时间:2014-07-31 23:20:20    阅读次数:267
[leetcode]Convert Sorted Array to Binary Search Tree
Convert Sorted Array to Binary Search TreeGiven an array where elements are sorted in ascending order, convert it to a height balanced BST.算法:根据有序数组,生...
分类:其他好文   时间:2014-07-31 23:20:00    阅读次数:270
Balanced Binary Tree(Java代码没过,什么原因???)
Given a binary tree, determine if it is height-balanced. For this problem, a height-balanced binary tree is defined as a binary tree in which the depth of the two subtrees of every node never diffe...
分类:编程语言   时间:2014-07-31 20:55:47    阅读次数:197
Convert Sorted Array to Binary Search Tree leetcode java
题目:Given an array where elements are sorted in ascending order, convert it to a height balanced BST.题解:先复习下什么是二叉搜索树(引自Wikipedia):二叉查找树(Binary Search ....
分类:编程语言   时间:2014-07-31 05:21:55    阅读次数:215
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