QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#97708#6329. Colorful GraphBazoka13WA 3ms6036kbC++142.2kb2023-04-17 23:04:402023-04-17 23:04:43

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-04-17 23:04:43]
  • 评测
  • 测评结果:WA
  • 用时:3ms
  • 内存:6036kb
  • [2023-04-17 23:04:40]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;

const int maxn=7e3+15;
int n,m,sum,tim,top,s;
int p[maxn],head[maxn],sd[maxn],dfn[maxn],low[maxn];
int stac[maxn],vis[maxn];
int h[maxn],in[maxn],dist[maxn];
struct EDGE
{
    int to;int next;int from;
}edge[maxn*10],ed[maxn*10];
void add(int x,int y)
{
    edge[++sum].next=head[x];
    edge[sum].from=x;
    edge[sum].to=y;
    head[x]=sum;
}
void tarjan(int x)
{
    low[x]=dfn[x]=++tim;
    stac[++top]=x;vis[x]=1;
    for (int i=head[x];i;i=edge[i].next)
    {
        int v=edge[i].to;
        if (!dfn[v]) {
            tarjan(v);
            low[x]=min(low[x],low[v]);
        }
        else if (vis[v])
        {
            low[x]=min(low[x],low[v]);
        }
    }
    if (dfn[x]==low[x])
    {
        int y;
        while (y=stac[top--])
        {
            sd[y]=x;
            vis[y]=0;
            if (x==y) break;
            p[x]+=p[y];
        }
    }
}
int nowCol;
vector<int> cols[maxn];
int ans[maxn];


void topo(){
    queue <int> q;
    for (int i=1;i<=n;i++)
        if (sd[i]==i&&!in[i]){
            q.push(i);
        }
    while (!q.empty())
    {
        int k=q.front();q.pop();
        if(cols[k].empty()) {
            ans[k] = ++nowCol;
            cols[k].push_back(nowCol);
        }else{
            ans[k]=cols[k][0];
        }
        int sz=0;
        for (int i=h[k];i;i=ed[i].next){
            int v=ed[i].to;
            if(sz<cols[k].size())cols[v].push_back(cols[k][sz++]);
            in[v]--;
            if (in[v]==0) q.push(v);
        }
        cols[k].clear();
    }
}



int main(){
    scanf("%d%d",&n,&m);
    for (int i=1;i<=m;i++)
    {
        int u,v;
        scanf("%d%d",&u,&v);
        add(u,v);
    }
    for (int i=1;i<=n;i++)
        if (!dfn[i]) tarjan(i);
    for (int i=1;i<=m;i++)
    {
        int x=sd[edge[i].from],y=sd[edge[i].to];
        if (x!=y)
        {
            ed[++s].next=h[x];
            ed[s].to=y;
            ed[s].from=x;
            h[x]=s;
            in[y]++;
        }
    }
    topo();
    if(nowCol>n)while(1);
    for(int i=1;i<=n;i++){
        printf("%d ",ans[sd[i]]);
    }
    return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 2ms
memory: 3888kb

input:

5 5
1 4
2 3
1 3
2 5
5 1

output:

1 1 1 2 1 

result:

ok AC

Test #2:

score: 0
Accepted
time: 2ms
memory: 5696kb

input:

5 7
1 2
2 1
4 3
5 1
5 4
4 1
4 5

output:

1 1 2 1 1 

result:

ok AC

Test #3:

score: 0
Accepted
time: 0ms
memory: 3840kb

input:

8 6
6 1
3 4
3 6
2 3
4 1
6 4

output:

1 1 1 1 2 1 3 4 

result:

ok AC

Test #4:

score: -100
Wrong Answer
time: 3ms
memory: 6036kb

input:

7000 6999
4365 4296
2980 3141
6820 4995
4781 24
2416 5844
2940 2675
3293 2163
3853 5356
262 6706
1985 1497
5241 3803
353 1624
5838 4708
5452 3019
2029 6161
3849 4219
1095 1453
4268 4567
1184 1857
2911 3977
1662 2751
6353 6496
2002 6628
1407 4623
425 1331
4445 4277
1259 3165
4994 1044
2756 5788
5496 ...

output:

1 1948 2586 2138 368 2 3 2511 3044 2240 409 1378 4 1594 2212 5 2776 6 3140 1790 2739 2910 1616 2254 1938 7 8 755 2429 9 2920 2863 10 11 2527 2526 2330 12 1640 13 2202 2955 14 2806 15 3112 16 691 17 18 3488 19 2662 1396 1974 2112 901 20 3205 21 2882 1187 267 546 2054 22 1694 1197 2234 23 24 3158 25 3...

result:

wrong answer Integer 1948 violates the range [1, 1750]