maximum 10827 torus sum
[LeetCode] 931. Minimum Falling Path Sum
Given an n x n array of integers matrix, return the minimum sum of any falling path through matrix. A falling path starts at any element in the first ......
django python manage.py migrate 后报错字段长度超了 django.db.utils.OperationalError: (1118 'Row size too large. The maximum row size for the used table type, not counting BLOBs, is 65535.
现象: 在models.py 将CharField字段的maxlength=修改后,执行ython manage.py migrate 报错django.db.utils.OperationalError: (1118 'Row size too large. The maximum row siz ......
AT_agc062_c [AGC062C] Mex of Subset Sum 思维妙妙题--zhengjun
思路比较巧妙。 首先排序。 考虑目前维护出 $a_{1 \sim i}$ 不能表示的数的集合 $S$。 考虑如何加入 $a_{i+1}$。 如果当前 $sum$ $$S'=S\cup [sum+1,a_{i+1}-1] \cup \{x+a_{i+1}|x\in S\}$$ - 若 $|S\cup ......
Sum in Binary Tree
Sum in Binary Tree time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vanya really likes mat ......
Maximum Sum
Maximum Sum time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given an array a1,a2 ......
CF1817E Half-sum
`greedy` 把数分成两个集合 $A,B$,且 $A 定理 $1$ > > $A$ 集合合并的顺序一定是从大往小的,$B$ 集合是从小往大的。 应该很好猜到,但是证明需要一点推导。 大概可以局部到 $x,y,z,w$ 四个数的情况。 几种情况分别是 $\frac{x+y}{8}+\frac{z} ......
Logistic Regression and its Maximum Likelihood Estimation
# 从 Linear Regression 到 Logistic Regression 给定二维样本数据集 $D = \left\{ (\vec{x}_{1}, y_{1}), (\vec{x}_{2}, y_{2}), \ldots, (\vec{x}_{n}, y_{n}) \right\}$, ......
Windows+Celery4+eventlet,异步报错:Recursion Error: maximum recursion depth exceeded while calling a Python object
#### 前情提要:Windows环境下,使用Celery4和eventlet,在Django项目中启用异步和周期,报错如下: RecursionError: maximum recursion depth exceeded while calling a Python object 经过排查,只找 ......
[LeetCode] 2178. Maximum Split of Positive Even Integers
You are given an integer finalSum. Split it into a sum of a maximum number of unique positive even integers. For example, given finalSum = 12, the fol ......
ARC107F Sum of Abs
# ARC107F Sum of Abs **[题目传送门——洛谷](https://www.luogu.com.cn/problem/AT_arc107_f)** **[题目传送门——AtCoder](https://atcoder.jp/contests/arc107/tasks/arc107_ ......
[LeetCode] 2600. K Items With the Maximum Sum
There is a bag that consists of items, each item has a number 1, 0, or -1 written on it. You are given four non-negative integers numOnes, numZeros, n ......
920 F. SUM and REPLACE
[toc] # F. SUM and REPLACE 题目[传送门](https://codeforces.com/contest/920/problem/F) ## 题意: 给你n个数,按照顺序排列,再进行m次操作。每次操作要么是问你区间[l,r]的和,要么是让你将区间[l,r]的所有数$a_i= ......
[LeetCode] 2679. Sum in a Matrix
You are given a 0-indexed 2D integer array nums. Initially, your score is 0. Perform the following operations until the matrix becomes empty: From eac ......
elasticsearch group sum top 10
``` { "version": true, "size": 0, "sort": [ { "request_length": { "order": "desc", "unmapped_type": "boolean" } } ], "stored_fields": [ "*" ], "script ......
AtCoder Regular Contest 163 D Sum of SCC
[洛谷传送门](https://www.luogu.com.cn/problem/AT_arc163_d "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/arc163/tasks/arc163_d "AtCoder 传送门") 怎么连这种相对传统 ......
Maximum Depth of Binary Tree
Given the root of a binary tree, return its maximum depth. A binary tree's maximum depth is the number of nodes along the longest path from the root n ......
【每日一题】Problem 489C. Given Length and Sum of Digits...
[原题](https://codeforces.com/problemset/problem/489/C) #### 解决思路 结果值越大,要求满足后续数位能成立的情况下,当前数位的值尽可能大;取最小结果同理 ##### 误区 1. 注意边界 - 一般情况下,数字开头不能为 0,除非数字长度为 ** ......
Codeforces 1458F - Range Diameter Sum
先考虑直径的一些求法:最普遍的想法肯定是从点集中任意一个点开始 DFS 找到距其最远的点,再一遍 DFS 找到距离你找到的那个点最远的点。但是放在这个题肯定是不太行的。因此考虑一种更常用的求法:**合并**。更直观地说:我们定义树上一个圆 $(x,r)$ 表示距离 $x$ 点 $\le r$ 的所有 ......
[LeetCode] 1186. Maximum Subarray Sum with One Deletion
Given an array of integers, return the maximum sum for a non-empty subarray (contiguous elements) with at most one element deletion. In other words, y ......
Subset Sum 问题单个物品重量限制前提下的更优算法
## 前言 看了 [ShanLunjiaJian 关于这个问题的文章](https://www.luogu.com.cn/blog/uakioi/nv-knapsack),是完全没看懂,沙东队爷的中枢神经内核配置把我偏序了。叉姐在下面提了个论文,论文找不到资源,谁搞到了可以 Q 我一份之类的拜谢了。 ......
Row size too large. The maximum row size for the used table type
> # 原文链接:https://blog.csdn.net/yyj108317/article/details/108756493 在一段自动创建mysql表的[sql语句](https://so.csdn.net/so/search?q=sql语句&spm=1001.2101.3001.7020 ......
「解题报告」CF1810G The Maximum Prefix
水篇题解。 最大值并不好考虑,我们尝试拆贡献,求最大值小于等于 $k$ 的概率,然后将概率差分一下即可得到恰好等于 $k$ 的概率,而最大值小于等于 $k$ 的概率是很容易通过一个 $O(n^2)$ DP 求出来的,但是这样我们还需要再枚举一个 $k$,复杂度 $O(n^3)$,难以接受。 那么我们 ......
stata gen egen sum不同功能
clear input x 1 2 3 4 end gen sx_gen = sum(x) egen sx_egen = sum(x) list , clean noobs //gen 提供的 sum() 函数执行的是「累积加总」,而 egen 提供的 sum() 函数则进行「整体加总」 ......
CF1810G The Maximum Prefix
经典套路。 ## 题意 你将随机生成一个长度为 $k$ 的数组 $a$,其中 $a_i$ 有 $p_i$ 概率为 $1$,否则为 $-1$。定义其前缀和数组 $s_i = \sum\limits_{j = 1}^{i}a_j, i \in [0, k]$。如果前缀和数组的最大值为 $t(t \in ......
每日一题力扣 1262 https://leetcode.cn/problems/greatest-sum-divisible-by-three/
、 题解 这道题目核心就算是要知道如果x%3=2的话,应该要去拿%3=1的数字,这样子才能满足%3=0 贪心 sum不够%3的时候,就减去余数为1的或者余数为2的 需要注意 两个余数为1会变成余数为2的,所以可能减去2个余数为1 核心代码如下 public int maxSumDivThreeOth ......
菜鸟工作日记--------------记录一次vue npm install时报错Maximum call stack size exceeded的解决过程
因为有一个项目需要修改一下前端,运行时报错,就使用npm i 补充一下依赖 没想到npm i 也报错了 在网上搜了一些方法 有一个是这样说的:在使用npm install 命令安装 npm 包时,遇到 “Maximum call stack size exceeded” 报错信息 解决办法: 可以将 ......
AtCoder Regular Contest 141 E Sliding Edge on Torus
[洛谷传送门](https://www.luogu.com.cn/problem/AT_arc141_e "洛谷传送门") [AtCoder 传送门](https://atcoder.jp/contests/arc141/tasks/arc141_e "AtCoder 传送门") $(i, j) \ ......
[LeetCode] 1262. Greatest Sum Divisible by Three
Given an integer array nums, return the maximum possible sum of elements of the array such that it is divisible by three. Example 1: Input: nums = [3, ......