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HDU - 1698 Just a Hook(线段树区间整体修改值,查询区间和)
In the game of DotA, Pudge’s meat hook is actually the most horrible thing for most of the heroes. The hook is made up of several consecutive metallic ...
分类:其他好文   时间:2019-05-02 09:54:43    阅读次数:135
Longest Subsequence CodeForces - 632D (lcm)
大意: 给定序列$a$, 求选出最长的一个子序列, 使得lcm不超过m. 刚开始想复杂了, 想着枚举gcd然后背包, 这样复杂度就是$O(\sum\limits_{i=1}^m \frac{m\sigma_0(i)}{i})$...... 估计了一下1e6大概只有1e8, 感觉剪个枝应该就可以过了, ...
分类:其他好文   时间:2019-05-01 18:41:00    阅读次数:108
codeforces269B
Greenhouse Effect CodeForces - 269B Emuskald is an avid horticulturist and owns the world's longest greenhouse — it is effectively infinite in length. ...
分类:其他好文   时间:2019-05-01 01:24:19    阅读次数:90
[LeetCode] Minimum Number of K Consecutive Bit Flips 连续K位翻转的最小次数
In an array containing only 0s and 1s, a bit flip consists of choosing a (contiguous) subarray of length and simultaneously changing every 0 in the su ...
分类:其他好文   时间:2019-04-30 01:08:50    阅读次数:133
[leetcode] 5.Longest Palindromic Substring
开始觉得挺简单的 写完发现这个时间超限了: 用pycharm跑了下 要4秒,结果就是它自己。[testcase:85] 发现之前判断轴对称的方法太低级了 不用逐位判断 轴对称的前一半和后一半的逆序是同一字符串即可。 testcase:95 f比g多一个 ...
分类:其他好文   时间:2019-04-27 09:39:30    阅读次数:133
Leetcode 14. Longest Common Prefix
https://leetcode.com/problems/longest common prefix/ ...
分类:其他好文   时间:2019-04-26 14:57:10    阅读次数:120
【LeetCode刷题系列 - 003题】Longest Substring Without Repeating Characters
题目: Given a string, find the length of the longest substring without repeating characters. Example 1: Input: "abcabcbb" Output: 3 Explanation: The ans ...
分类:其他好文   时间:2019-04-26 00:33:28    阅读次数:131
【leetcode】1027. Longest Arithmetic Sequence
题目如下: Given an array A of integers, return the length of the longest arithmetic subsequence in A. Recall that a subsequence of A is a list A[i_1], A[i ...
分类:其他好文   时间:2019-04-24 23:35:51    阅读次数:207
14.Diameter of Binary Tree(二叉树的直径)
Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of the **longest** path b... ...
分类:其他好文   时间:2019-04-15 20:29:09    阅读次数:178
POJ 2533 - Longest Ordered Subsequence - [最长递增子序列长度][LIS问题]
题目链接:http://poj.org/problem?id=2533 Time Limit: 2000MS Memory Limit: 65536K Description A numeric sequence of ai is ordered if a1 < a2 < ... < aN. Let ...
分类:其他好文   时间:2019-04-15 16:03:37    阅读次数:152
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