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LeetCode572另一个树的子树
题目描述 https://leetcode-cn.com/problems/subtree-of-another-tree/ 题解 我写的 两层DFS、双重DFS 其它题解一般也是这个思路 // Problem: LeetCode 572 // URL: https://leetcode-cn.co ...
分类:其他好文   时间:2020-07-26 19:01:52    阅读次数:62
Jenkins 安装 ruby-runtime 出错
C:\Program Files (x86)\Jenkins\plugins\ruby-runtime\WEB-INF\lib\classes.jar: The process cannot access the file because it is being used by another pr ...
分类:其他好文   时间:2020-07-24 21:30:48    阅读次数:197
题解 HDU3306 【Another kind of Fibonacci】
本篇题解用于作者本人对于矩阵乘法的印象加深,也欢迎大家的阅读。 题目大意 众所周知,斐波那契数列为 \(f(0)=1\) , \(f(1)=1\) ,\(f(n)=f(n-1)+f(n-2)~(n>=2)\) 。定义另一种斐波那契数列: \(A(0)=1\) , \(A(1)=1\) , \(A(n ...
分类:其他好文   时间:2020-07-21 22:59:28    阅读次数:75
CodeForces 1114F--Please, another Queries on Array?(欧拉函数+线段树)
题目链接:https://codeforces.com/problemset/problem/1114/F 题目大意:给你n个数,q次操作,类型1,将区间[l,r]中每个数乘以x,类型2,询问$\varphi (\prod_{i=l}^{r}a_i)$。其中初始的n个数每个小于等于300,x<=30 ...
分类:其他好文   时间:2020-07-12 19:09:23    阅读次数:52
MIT_xv6_Lab4_PartA
Introduction In part A we should add multiprocessor support to JOS, implement round-robin scheduling, and add basic environment management system call ...
分类:其他好文   时间:2020-07-11 23:16:57    阅读次数:101
Another app is currently holding the yum lock; waiting for it to exit...
使用yum安装计划任务功能,结果提示: Another app is currently holding the yum lock; waiting for it to exit... 可能是系统自动升级正在运行,yum在锁定状态中。 已经有一个yum进程在运行了,使用kill干掉它: [root@ ...
分类:移动开发   时间:2020-07-10 11:28:21    阅读次数:88
Collections.sort的使用
现有需求对某个List集合进行排序,List中存放的是Person对象,按Person的年龄正序和倒序排序,先看实现代码: package test.collection; public class Person { String name; int age; public String getNa ...
分类:其他好文   时间:2020-07-08 01:19:36    阅读次数:67
WCF on .NET Core missing client Negotiate scheme in authorization scheme
https://stackoverflow.com/questions/53784440/wcf-on-net-core-missing-client-negotiate-scheme-in-authorization-scheme Well its too bad if another proje ...
分类:Web程序   时间:2020-07-07 15:38:36    阅读次数:92
Leetcode: 879. Profitable Schemes
Description There are G people in a gang, and a list of various crimes they could commit. The i-th crime generates a profit[i] and requires group[i] g ...
分类:其他好文   时间:2020-07-04 13:37:37    阅读次数:57
codeforces Educational Round 80
Deadline Yet Another Meme Problem *Two Arrays *Minimax Problem *Messenger Simulator A、Deadline 题意: 完成一个计划需要$d$天,但是可以优化,优化$x$天的情况下,完成时间是$x+\lceil \frac ...
分类:其他好文   时间:2020-07-04 01:23:30    阅读次数:65
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