QOJ.ac

QOJ

ID题目提交者结果用时内存语言文件大小提交时间测评时间
#331855#3100. Meetings 2xie_lzh0 5ms22008kbC++141.9kb2024-02-18 20:36:512024-02-18 20:36:51

Judging History

你现在查看的是最新测评结果

  • [2024-02-18 20:36:51]
  • 评测
  • 测评结果:0
  • 用时:5ms
  • 内存:22008kb
  • [2024-02-18 20:36:51]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
const int N=5e5+5;
int n,t,siz[N],maxp[N],rt;
bool vis[N];
vector<int> to[N];
int anssiz[N],nanssiz[N],ans[N];
void findrt(int x,int all,int f)
{
    siz[x]=1; maxp[x]=0;
    for(int v:to[x])
    {
        if(v==f||vis[v]) continue;
        findrt(v,all,x);
        siz[x]+=siz[v];
        maxp[x]=max(maxp[x],siz[v]);
    }
    maxp[x]=max(maxp[x],all-siz[x]);
    if(rt==0||maxp[x]<maxp[rt]) rt=x;
}
void work(int x,int f,int ndep)
{
    nanssiz[siz[x]]=max(nanssiz[siz[x]],ndep);
    for(int v:to[x])
    {
        if(vis[v]||v==f) continue;
        work(v,x,ndep+1);
    }
}
void getsiz(int x,int f)
{
    siz[x]=1;
    for(int v:to[x])
    {
        if(vis[v]||v==f) continue;
        getsiz(v,x); siz[x]+=siz[v];
    }
}
void calc(int x)
{
    for(int v:to[x])
    {
        if(vis[v]) continue;
        work(v,x,1);
        for(int i=siz[v];i>=1;i--)
        {
            nanssiz[i]=max(nanssiz[i],nanssiz[i+1]);
            if(nanssiz[i]==0) continue;
            if(anssiz[i]) ans[i]=max(ans[i],anssiz[i]+nanssiz[i]+1);
            anssiz[i]=max(anssiz[i],nanssiz[i]);
        }
        for(int i=1;i<=siz[v];i++)
            nanssiz[i]=0;
        int ans2=min(siz[v],siz[x]-siz[v]);
        for(int i=ans2;i>=1;i--) ans[i]=max(ans[i],2);
    }
    for(int i=1;i<=siz[x];i++) anssiz[i]=0;
}
void solve(int x)
{
    rt=0;
    findrt(x,siz[x],0); getsiz(rt,0); vis[rt]=1;
    calc(rt);
    for(int v:to[rt]) if(!vis[v]) solve(v);
}
void solve()
{
    cin>>n;
    for(int u,v,i=1;i<n;i++)
    {
        cin>>u>>v;
        to[u].push_back(v);
        to[v].push_back(u);
    }
    for(int i=1;i<=n;i++) ans[i]=1;
    siz[1]=n; solve(1);
    for(int i=1;i<=n;i++)
        if(i&1) cout<<"1\n";
        else cout<<ans[i/2]<<'\n';
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0); cout.tie(0);
    // cin>>t;
    t=1;
    while(t--) solve();
}

詳細信息

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 4
Accepted
time: 5ms
memory: 22008kb

input:

1

output:

1

result:

ok single line: '1'

Test #2:

score: 0
Accepted
time: 2ms
memory: 17996kb

input:

2
2 1

output:

1
2

result:

ok 2 lines

Test #3:

score: 0
Accepted
time: 0ms
memory: 20020kb

input:

3
1 3
3 2

output:

1
3
1

result:

ok 3 lines

Test #4:

score: -4
Wrong Answer
time: 0ms
memory: 20020kb

input:

14
12 14
12 9
14 2
12 6
12 7
6 4
3 4
1 4
12 8
13 1
10 12
11 6
6 5

output:

1
7
1
5
1
2
1
2
1
2
1
2
1
2

result:

wrong answer 6th lines differ - expected: '3', found: '2'

Subtask #2:

score: 0
Skipped

Dependency #1:

0%

Subtask #3:

score: 0
Skipped

Dependency #1:

0%