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A - A Simple Problem with Integers (线段树的区间修改与区间查询)
You have N integers, A1, A2, ... , AN. You need to deal with two kinds of operations. One type of operation is to add some given number to each number ...
分类:其他好文   时间:2020-03-20 18:39:27    阅读次数:72
codeforces 1236 A. Bad Ugly Numbers
A. Bad Ugly Numbers time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given a integ ...
分类:其他好文   时间:2020-03-20 12:47:21    阅读次数:68
LeetCode | 0409. Longest Palindrome最长回文串【Python】
LeetCode 0409. Longest Palindrome最长回文串【Easy】【Python】【字符串】 Problem "LeetCode" Given a string which consists of lowercase or uppercase letters, find the ...
分类:编程语言   时间:2020-03-19 21:26:18    阅读次数:69
LeetCode 7 Reverse Integer
题目: Given a 32-bit signed integer, reverse digits of an integer. Example 1: Input: 123 Output: 321 Example 2: Input: -123 Output: -321 Example 3: Inpu ...
分类:其他好文   时间:2020-03-18 23:36:39    阅读次数:72
LeetCode | 0106. Construct Binary Tree from Inorder and Postorder Traversal从中序与后序遍历序列构造二叉树【Python】
LeetCode 0106. Construct Binary Tree from Inorder and Postorder Traversal从中序与后序遍历序列构造二叉树【Medium】【Python】【二叉树】【递归】 Problem "LeetCode" Given inorder and ...
分类:编程语言   时间:2020-03-18 21:58:48    阅读次数:66
[LeetCode] 940. Distinct Subsequences II
Given a string S, count the number of distinct, non-empty subsequences of S . Since the result may be large, return the answer modulo 10^9 + 7. Exampl ...
分类:其他好文   时间:2020-03-18 09:38:23    阅读次数:52
[LintCode] 1844. subarray sum equals k II
Given an array of integers and an integer k, you need to find the minimum size of continuous subarrays whose sum equals to k, and return its length. i ...
分类:其他好文   时间:2020-03-18 09:33:00    阅读次数:42
[LeetCode] 543. Diameter of Binary Tree
二叉树的直径。题意是给一个二叉树,找二叉树里面的最大直径。最大直径的定义是任意两个node之间的最大距离。例子, Given a binary tree 1 / \ 2 3 / \ 4 5 Return 3, which is the length of the path [4,2,1,3] or ...
分类:其他好文   时间:2020-03-18 09:24:23    阅读次数:76
换根dp
"https://codeforces.com/contest/1324/problem/F" description you are given a tree, in which the vertices are all printed either black or white. , find ...
分类:其他好文   时间:2020-03-18 00:04:49    阅读次数:76
[CodeForces] 1325D Ehab the Xorcist
Given 2 integers u and v, find the shortest array such that bitwise-xor of its elements is u, and the sum of its elements is v. Input The only line co ...
分类:其他好文   时间:2020-03-17 08:26:52    阅读次数:63
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