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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#209468#7107. Chaleurrqoi031AC ✓156ms4264kbC++202.7kb2023-10-10 15:16:292023-10-10 15:16:30

Judging History

你现在查看的是最新测评结果

  • [2023-10-10 15:16:30]
  • 评测
  • 测评结果:AC
  • 用时:156ms
  • 内存:4264kb
  • [2023-10-10 15:16:29]
  • 提交

answer

#include<stdio.h>
#include<utility>
// #include<set>
struct edge
{
    int v,next;
};
edge e[200005];
int en,last[100005];
void add_edge(const int u,const int v)
{
    e[++en]={v,last[u]};
    last[u]=en;
}
int deg[100005];
int bel[100005];
// std::set<std::pair<int,int>> Ed;
void solve()
{
    int n,m;
    scanf("%d%d",&n,&m);
    __builtin_memset(last+1,0,n<<2);
    __builtin_memset(deg+1,0,n<<2);
    en=0;// Ed.clear();
    for(int i=1;i<=m;i++)
    {
        int u,v;
        scanf("%d%d",&u,&v);
        // if(Ed.find({u,v})!=Ed.end())
        // {
        //     fprintf(stderr,"%d %d\n",u,v);
        //     continue;
        // }
        // Ed.insert({u,v});
        add_edge(u,v);
        add_edge(v,u);
        ++deg[u],++deg[v];
    }
    deg[0]=-1;
    __builtin_memset(bel+1,0,n<<2);
    int p(0);
    for(int i=1;i<=n;i++)
    {
        p=deg[p]<deg[i]?i:p;
    }
    int k(0);
    for(;p;k++)
    {
        bel[p]=deg[p]=-1;
        int q(0);
        for(int i=last[p];i>0;i=e[i].next)
        {
            const int v(e[i].v);
            if(bel[v]==k)
            {
                bel[v]=k+1;
                q=deg[q]<deg[v]?v:q;
            }
            --deg[v];
        }
        p=q;
    }
    fprintf(stderr,"k = %d\n",k);
    int ans1(1);
    for(int i=1;i<=n;i++)
    {
        if(~bel[i])
        {
            int c(0);
            for(int j=last[i];j>0;j=e[j].next)
            {
                if(bel[e[j].v]==-1)
                {
                    ++c;
                }
            }
            if(c==k-1)
            {
                ++ans1;
            }
        }
    }
    int ans2(0);
    for(int i=1;i<=n;i++)
    {
        if(bel[i]==-1)
        {
            int c(0);
            for(int j=last[i];j>0;j=e[j].next)
            {
                if(~bel[e[j].v])
                {
                    c=1;
                    break;
                }
            }
            if(c==0)
            {
                ++ans2;
            }
        }
    }
    if(!ans2)
    {
        ans2=1;
        for(int i=1;i<=n;i++)
        {
            if(bel[i]==-1)
            {
                int c(0);
                for(int j=last[i];j>0;j=e[j].next)
                {
                    if(~bel[e[j].v])
                    {
                        ++c;
                    }
                }
                if(c==1)
                {
                    ++ans2;
                }
            }
        }
    }
    printf("%d %d\n",ans1,ans2);
}
int main()
{
    int t;
    scanf("%d",&t);
    while(t--)
    {
        solve();
    }
    return 0;
}

这程序好像有点Bug,我给组数据试试?

Details

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Test #1:

score: 100
Accepted
time: 0ms
memory: 1632kb

input:

3
3 2
1 2
2 3
6 6
1 2
2 3
1 3
1 4
2 5
3 6
4 1
1 2

output:

2 1
1 4
1 2

result:

ok 3 lines

Test #2:

score: 0
Accepted
time: 156ms
memory: 4264kb

input:

2231
1 0
5 7
4 1
3 4
3 1
3 5
4 2
3 2
4 5
5 4
2 1
2 5
2 4
2 3
5 10
3 2
2 5
1 4
4 2
4 5
1 2
1 3
3 5
3 4
1 5
5 10
1 3
2 4
1 4
5 2
2 3
1 5
5 4
1 2
3 4
5 3
5 9
2 5
3 5
2 3
2 1
4 3
3 1
4 1
4 5
2 4
5 4
4 2
4 1
4 5
4 3
5 9
4 1
4 5
3 4
2 4
2 1
3 1
2 5
3 5
3 2
5 4
2 5
2 3
2 1
2 4
5 9
5 2
1 3
4 3
1 2
5 4
4 2
5...

output:

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

result:

ok 2231 lines

Extra Test:

score: 0
Extra Test Passed