hard so try you

Don't try so hard, the best things come when you least expect them to.
2017-08-21 13:24:00
Don't try so hard, the best things come when you least expect them to.
```
Don't try so hard, the best things come when you least expect them to. 
```
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If you try to create a user with a user name that is already taken then you get a hard crash
2020-12-09 03:50:29
So I might have an opportunity to hijack someone else's account by simply creating a new user with the same user name someone else has already use. I haven't tried this hack, but maybe we ...
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Program crashes, please help and thank you so much for your hard work
2020-11-29 05:42:30
<div><p>anytime i try and edit any video about 4 minutes into it the whole programs crashed each and every time <ul><li>Operating System / windows 10 home</li><li>OpenShot Version2.4.2 laptop is a HP...
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[question] Why is it so hard to get fine control over the drawings and objects
2020-12-25 17:36:53
<p>Whenever I try to draw something it takes me so much time to get the shapes and drawings where exactly I need them to be (things are not smooth compared to inkspace), and that is mostly because it ...
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Document existing keybindings with the command they execute so you can remap them
2020-12-26 04:49:51
<p>I want to re-assign some of the existing mappings to others that better suit my needs, but it is very hard to deduce which one the extension is using for each default keybinding, some are native ...
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live URL hash rewriting as you drag/zoom, hard named permalinks such as foo.com/#/jeffs-island
2021-01-06 14:16:58
<p>That list is in overviewer.permalinks, though I was thinking that hard permalinks should perhaps be generated by in-game signs using "#permalink-name" on the first or last line of the sign....
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HDUOJ 3551 Hard Problem

2020-07-14 09:50:22

This is the most tough task in this contest, do not try it until you solve all the other tasks or you feel boring on others. Given an undirected graph, you are to find out a subgraph of it so that the...

HDUOJ 3551 Hard Problem
题目链接
Problem Description
This is the most tough task in this contest, do not try it until you solve all the other tasks or you feel boring on others. Given an undirected graph, you are to find out a subgraph of it so that the degree of the i-th node in the subgraph is the given integer Di. The subgraph is a subset of edges and all vertexes are reserved. Notice that the graph may be disconnected, and two edges may connect the same vertexes, but no self cyclic exists.
Input
The input contains several test cases, the first line of the input contains an integer T denoting the number of test cases.

For each test case, the first line contains two integers N and M, denoting the number of vertexes and number of edges in the graph. (1 <= N <= 50, 1 <= M <= 200)

For the next M lines, each line contains two integers X and Y, denote there is a edge between X-th node and Y-th node. (1 <= X, Y <= N)

For the last N lines, each line contains a single integer Di, denote the degree of i-th node in the subgraph.
Output
For each test case, if the subgraph exist, output “YES”, otherwise output “NO”. See sample output for further details
Sample Input
2
4 4
1 2
3 4
2 3
1 4
1
2
1
0
4 5
2 1
1 2
2 3
3 4
3 4
1
0
1
0

Sample Output
Case 1: YES
Case 2: NO

一般图匹配，这题的精髓就是要加点加边进行构图，构图完成后用带花树算法判断是否是完全匹配即可~

下面来看如何构图，拿样例一：

首先根据每个点的度数加点：

 $点1->1:1$ 

 $点2->2:2,3$ 

 $点3->1:4$ 

 $点4->0$ 

然后将边重新编号，再将加的点与对应边的点连边：

 $边1：1-2->5-6\ \ 连边：1-5\ \ 2-6\ \ 3-6$ 

 $边2：3-4->7-8\ \ 连边：4-3$ 

 $边3：2-3->9-10\ \ 连边：2-9\ \ 3-9\ \ 4-10$ 

 $边4：1-4->11-12\ \ 连边：1-11$ 

这样一来图就重构完成了，下面就套模板判断是否是完全匹配即可：
#include <bits/stdc++.h>
using namespace std;
const int N=1e3+5;
deque<int>q;
bool G[N][N],g[N][N],inque[N],inblossom[N],vis[N];
int match[N],pre[N],base[N];
int n,m,t,u,v,d,id;
vector<int>V[N];
struct node{
    int u,v;
}E[N];
int Find(int u,int v){
    bool inpath[N]={false};
    while(1){
        u=base[u];
        inpath[u]=true;
        if(match[u]==-1)break;
        u=pre[match[u]];
    }
    while(1){
        v=base[v];
        if(inpath[v])return v;
        v=pre[match[v]];
    }
}

void reset(int u,int anc){
    while(u!=anc){
        int v=match[u];
        inblossom[base[u]]=1;
        inblossom[base[v]]=1;
        v=pre[v];
        if(base[v]!=anc)pre[v]=match[u];
        u=v;
    }
}

void contract(int u,int v,int n){
    int anc=Find(u,v);
    memset(inblossom,0,sizeof(inblossom));
    reset(u,anc);reset(v,anc);
    if(base[u]!=anc)pre[u]=v;
    if(base[v]!=anc)pre[v]=u;
    for(int i=1;i<=n;i++)
        if(inblossom[base[i]]){
            base[i]=anc;
            if(!inque[i]){
                q.push_back(i);
                inque[i]=1;
            }
        }
}

bool dfs(int s,int n){
    for(int i=0;i<=n;i++)pre[i]=-1,inque[i]=0,base[i]=i;
    q.clear();q.push_back(s);inque[s]=1;
    while(!q.empty()){
        int u=q.front();q.pop_front();
        for(int v=1;v<=n;v++){
            if(g[u][v]&&base[v]!=base[u]&&match[u]!=v){
                if(v==s||(match[v]!=-1&&pre[match[v]]!=-1))contract(u,v,n);
                else if(pre[v]==-1){
                    pre[v]=u;
                    if(match[v]!=-1)q.push_back(match[v]),inque[match[v]]=1;
                    else{
                        u=v;
                        while(u!=-1){
                            v=pre[u];
                            int w=match[v];
                            match[u]=v;
                            match[v]=u;
                            u=w;
                        }
                        return true;
                    }
                }
            }
        }
    }
    return false;
}

void calculate()
{
    int ans=0;
    memset(match,-1,sizeof(match));
    for(int i=1;i<=id-1;i++)
        if(match[i]==-1&&dfs(i,id-1)) ans++;
    if(ans*2==id-1) printf("YES\n");
    else printf("NO\n");
}

void init(){
    id=1;
    memset(G,0,sizeof(G));
    memset(g,0,sizeof(g));
    for(int i=1;i<=n;i++) V[i].clear();
}

void build(){
    for(int i=1;i<=m;i++){
        for(auto k:V[E[i].u]) g[k][id]=g[id][k]=1;
        id++;
        for(auto k:V[E[i].v]) g[k][id]=g[id][k]=1;
        g[id][id-1]=g[id-1][id]=1;
        id++;
    }
}

int main(){
    scanf("%d",&t);
    for(int p=1;p<=t;p++){
        init();
        scanf("%d%d",&n,&m);
        for(int i=1;i<=m;i++){
            scanf("%d%d",&u,&v);
            G[u][v]=G[v][u]=1;
            E[i].u=u,E[i].v=v;
        }
        for(int i=1;i<=n;i++){
            scanf("%d",&d);
            while(d--) V[i].push_back(id++);
        }
        build();
        printf("Case %d: ",p);
        calculate();
    }
}

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really try insertRule
2021-01-12 13:46:54
m betting this is gonna be a hard sell, so here's the pitch: - Touching a style tag after creation is bad. Really bad. After changing it, the DOM must parse the text, then evaluate the rules. ALL ...
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Try different SDF granularities
2020-12-09 12:11:11
16 is where I started to see artifacts...) with a variety of different fonts</li><li>[ ] This could be variable/env based so if you want a very high quality SDF you can set your settings that way...
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HardLimit Interrupt Issues
2021-01-10 04:35:27
1 command and I try moving any of the axes, I get the HARDLIMIT alarm, and i have to reset. If I try to use the homing feature, i get the same results. <p>I know the switches are wired correctly, i ...
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Hard coded controllers namespace
2020-12-06 15:11:06
So instead of hard coding the namespace, some option would be to set the namespace in a config or just like Laravel <code>RouteServiceProvider</code> that uses <code>->namespace($this->...
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Issue when running 0.7.12 with Hardhat
2020-12-27 02:13:15
<p>I noticed you pushed the 0.7.12 with Hardhat support so thought i'd give it a go and try to use. <p>Added 0.7.12, added to <code>hardhat.config.ts, and ran <code>hardhat coverage</code> and it ...
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Application option for always using hard-refresh
2021-01-11 12:29:34
<p>This is my first try in golang, so I have no idea what I'm doing! ;-) Couldn't figure out the different use-cases in func needRefreshAppStatus, so I added the check for the new option at ...
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Very very hard to change parameters
2020-12-31 18:49:25
Additionally when you try that in Mist, the final confirmation has not enough gas (even with the +100.000) , so one need to set it manually. <p>I would suggest to use the original contract: ...
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Hard Problem 困难的问题
2020-01-27 21:53:42
This is the most tough task in this contest, do not try it until you solve all the other tasks or you feel boring on others. Given an undirected graph, you are to find out a subgraph of it so that the...
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Golang erlang r语言
Highways: Hard shoulder / emergency lane
2020-12-01 23:46:46
where broken down cars try and get to so they're not blocking traffic while they wait for service van). <p>Would it be possible to add an additional option (Policies tab in mod settings), ...
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CancellationTokenSource is hard to use correctly
2021-01-11 13:37:56
<div><p><code>CancellationTokenSource</code> is hard to use correctly, especially in concurrent scenarios. <p>Most CancellationTokenSource methods are booby-trapped with <code>ThrowIfDisposed, ...
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osr hard coded in grgsm_livemon
2020-12-05 09:10:51
As I am new to this field, could you provide me with some hints where start and maybe what to try... <p>my config is : Rafael Micro R820T tuner gr-osmosdr 0.1.4 (0.1.4) gnuradio 3.7.10 GNU C+&#...
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HardFault in Photon setup during WiFi scan
2020-11-25 09:21:42
<div><p>When trying to set up a new Photon through the CLI and letting it scan for WiFi networks it crashes with a hard fault in <code>wwd_scan_result_handler</code>. The Photon has firmware version ...
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Empty idle loop causes hard fault
2020-12-27 08:06:45
<div><p>I was working on a project the other day and evenually my debug builds started to become too large for the tiny microcontroller I was running on (an STM... so I decided to try setting <code>opt...
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Repositioning of buildings very hard to use
2020-12-02 11:10:07
through solid blocks so that you can see it even if it mostly overlaps with the exiting build (eg ignore depth buffer while rendering the preview). <h3>Actual behaviour <p>It seems that once I click ...
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GRBL freezes when I turn on Hard Switches
2021-01-10 04:29:40
Should I try to change all the connections, so that the 2-7 pins of the board would go to the driver's (something+) sockets and the (something-) sockets would be all connected to the GND pin ...
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Whatsapp Share button hard to see
2021-01-08 04:50:44
<div><p>I was alerted to this issue from a user in this issue https://automattic.helpshift.com/admin/issue/267452/ If you try to share a post from the WordPress app to Whatsapp, the blue color of the...
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Rule proposal: `try-maximum-statements`
2020-11-27 22:35:35
<p>Should we add a parameter to customize the maximum number of ~~line~~ statement or hardcode it to 1 line of code? 🤔 <p>Note that I'm not a native english speaker so please fix the rule...
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VM Name shouldn't be hard coded
2021-01-10 06:13:20
<p>If you hardcode the VM name, this is the error you see: <pre><code> $ vagrant up WARN: Unresolved specs during Gem::Specification.reset: ffi (>= 1.0.11, ~> 1.0) net-ssh (< 2.8.0, >...
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Cannot copy hard-links back to unencrypted volume
2020-12-07 04:55:58
<p>You can see the hard link structure is preserved, both files point to node 9452762649550924626. <p>However, when I try to restore the files, the hard link structure is not preserved: <pre><code> ...
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Drag-and-drop timeline rearrangement feature is hard to use, not discoverable enough
2020-12-02 04:02:46
<p>Broadly, I think the right approach is probably to separate rearranging and content-editing into separate interfaces, so that you see a more condensed, trello-like view for arranging blocks, and no...
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Error messages are hard to understand for newcomers
2021-01-09 03:55:07
Did you want to try searching another source? Also, if you want contribute these typings, please help us: https://github.com/typings/registry</code> that doesn't help so much. <p>Moreover, I get...
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Don't try so hard, the best things come when you least expect them to.

If you try to create a user with a user name that is already taken then you get a hard crash

Program crashes, please help and thank you so much for your hard work

[question] Why is it so hard to get fine control over the drawings and objects

Document existing keybindings with the command they execute so you can remap them

live URL hash rewriting as you drag/zoom, hard named permalinks such as foo.com/#/jeffs-island

HDUOJ 3551 Hard Problem

HDUOJ 3551 Hard Problem

Problem Description

Input

Output

Sample Input

Sample Output

really try insertRule

Try different SDF granularities

HardLimit Interrupt Issues

Hard coded controllers namespace

Issue when running 0.7.12 with Hardhat

Application option for always using hard-refresh

Very very hard to change parameters

Hard Problem 困难的问题

Highways: Hard shoulder / emergency lane

CancellationTokenSource is hard to use correctly

osr hard coded in grgsm_livemon

HardFault in Photon setup during WiFi scan

Empty idle loop causes hard fault

Repositioning of buildings very hard to use

GRBL freezes when I turn on Hard Switches

Whatsapp Share button hard to see

Rule proposal: `try-maximum-statements`

VM Name shouldn't be hard coded

Cannot copy hard-links back to unencrypted volume

Drag-and-drop timeline rearrangement feature is hard to use, not discoverable enough

Error messages are hard to understand for newcomers

hardsotryyou