## Breadth first search depth first search dynamic programming LeetCode topic: transmitting information

original text https://lwebapp.com/zh/post/l...problemChild A is playing A message passing game with his friends. The rules of the game are as follows:There are n players. All players are numbered 0 ~ n-1 respectively, of which the number of child A is 0Each player has A fixed number of other players who can transmit information (or not). The re ...

Posted by **koglakci** on *Tue, 01 Mar 2022 08:20:37 +0100*

## Shu Chuan's going to the meeting alone

Problem surface
Description
[title background] In 215 ad, Liu Bei took Yizhou, and Sun Quan ordered Zhuge Jin to ask Liu Bei for Jingzhou. Liu Bei refused, and Sun Quan was so angry that he sent LV Meng to lead the army to take Changsha, Lingling and Guiyang. Changsha, Guiyang and Shu will surrender immediately. After learning that, Liu B ...

Posted by **Bladescope** on *Fri, 18 Feb 2022 21:46:05 +0100*

## BFS and DP -- the 70th biweekly match of Li Kou

⭐ New pit in winter vacation -- daily question notes of code Fox First question, greedy thought (take the largest two at a time, and then the largest third for free - the amount of sugar you can take for free is limited. Why not take one expensive one for free) The second problem is mathematical thinking (all numbers are in a range, so you onl ...

Posted by **sparrrow** on *Wed, 02 Feb 2022 18:05:46 +0100*

## [WC2022] selected lectures on miscellaneous topics - Deng Mingyang

Quotations
First of all, please attach the quotation of Mr. Deng. If there is anything you haven't collected, please let me know.
"Competition in the same field"
"The advantage is in me"
I'm a fan of coconut juice. I'm good at typesetting.
Don't look at \ (\ tt steam \), it's boring.
stars
Title Description
A star can be a ...

Posted by **InfiniteA** on *Thu, 27 Jan 2022 11:40:06 +0100*

## P2081 [NOI2012] lost amusement park

Title portal P2081
Some definitions:
Define that \ (fa_ \) represents the father of \ (u \), \ (facet_ \) represents the number of parent nodes of \ (u \) (value \ (1 \) or \ (2 \)), \ (son_ \) represents the number of sons of \ (u \), \ (ch_ \) represents the child nodes of \ (u \), and \ (down_ \) represents the expected path length starting ...

Posted by **TempleDMDKrazd** on *Sat, 15 Jan 2022 01:38:05 +0100*

## LeetCode-416. Split equal sum subset

Topic source
416. Segmentation and subsets
Title details
Give you a non empty array containing only positive integers, {nums. Please judge whether this array can be divided into two subsets so that the sum of the elements in the two subsets is equal.
Example 1:
Input: num = [1,5,11,5]
Output: true
Explanation: an array can be divided into [1, 5 ...

Posted by **mattcass** on *Tue, 04 Jan 2022 08:12:18 +0100*

## [improvement group training 2021] Round2

I'm too lazy to talk nonsense. I'm a fool.
C
Title Description
Given a tree with \ (n \) points, record \ (L(u,v) \) as the number of points on the \ ((u,v) \) simple path. For the path \ ((a,b),(c,d) \) point disjoint Quad \ ((a,b,c,d) \), we want to know how many different values \ ((L(a,b),L(c,d)) \) have.
\(n\leq 5\cdot 10^5\)
solution
The ...

Posted by **gigabyt3r** on *Fri, 12 Nov 2021 03:07:43 +0100*

## Noip simulation 85 2021.10.29 (to depression Trilogy)

preface
Thanks to the author, I was directly depressed in the examination room
Although I only saw Darling in the FRANXX, I still felt bad for \ (ichigo \) for a long time
T1 \ ((ichigo) \)
I came to see you dressed up like you like, Guang, no, da, darling
Uncomfortable!!! But it's hard for me to cut \ (T1 \) without cutting it off
On the exa ...

Posted by **le007** on *Fri, 29 Oct 2021 12:32:40 +0200*

## Educational codeforces round 112 (rated for Div. 2)

A. PizzaForces
A. PizzaForces Easy to understand, omitted Idea: simply be greedy. Divide n into such forms as n=10+x+10y, then 10y individuals use y large cakes, and the remaining 10+x uses three combinations of cakes to see which saves the most time
AC_code:
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int main( ...

Posted by **jola** on *Thu, 16 Sep 2021 02:35:10 +0200*