oj.uz

Submission #1034029

# Submission time Handle Problem Language Result Execution time Memory
1034029 2024-07-25T08:54:46 Z vjudge1 Meetings 2 (JOI21_meetings2) C++17
100 / 100
 399 ms 59476 KB 
#include<bits/stdc++.h>
#define int long long
#define ll pair<int,int>
using namespace std;

const int N=400022;
set<int> ke[N];
int maxx[N];
int h[N];
int kq[N];
int oo=1e9;
int kq2[N];
int sz[N];

void dfs(int u,int pa)
{
    sz[u]=1;
    for (int v : ke[u])
    {
        if (v==pa) continue;
        dfs(v,u);
        sz[u]+=sz[v];
    }
}

int dfs2(int u,int pa,int kk)
{
    for (int v : ke[u])
    {
        if (v==pa) continue;
        if (sz[v]>kk/2) return dfs2(v,u,kk);
    }
    return u;
}

void dfs3(int u,int pa,int kk)
{
    sz[u]=1;
    h[u]=kk;
    for (int v : ke[u])
    {
        if (v==pa) continue;
        dfs3(v,u,kk+1);
        sz[u]+=sz[v];
    }
    kq[sz[u]]=max(kq[sz[u]],h[u]);
}

void gg(int u)
{
    dfs(u,0);
    int dinh=dfs2(u,0,sz[u]);
    h[dinh]=0;
    for (int i=1;i<=sz[u];i++) kq[i]=-oo,maxx[i]=0;
    maxx[dinh]=0;
    int cur=1;
    for (int v : ke[dinh])
    {
        dfs3(v,dinh,1);
        kq[sz[v]+1]=0;
        for (int i2=sz[v]+1;i2>=2;i2--) kq[i2-1]=max(kq[i2-1],kq[i2]);
        for (int i2=1;i2<=sz[v]+1;i2++)
        {
            kq2[i2*2]=max(kq2[i2*2],kq[i2]+maxx[i2]);
        }
        for (int i2=1;i2<=sz[v]+1;i2++) 
        {
            maxx[i2]=max(maxx[i2],kq[i2]);
            kq[i2]=-oo;
        }
        for (int i2=cur;i2<=cur+sz[v];i2++) maxx[i2]=max(maxx[i2],0ll);
        cur+=sz[v];
    }
    set<int> lol=ke[dinh];
    set<int> :: iterator itr;
    for (itr=lol.begin();itr!=lol.end();itr++)
    {
        int v=*itr;
        ke[v].erase(dinh);
        ke[dinh].erase(v);
        gg(v);
    }
}

signed main()
{
    // freopen("kk.inp","r",stdin);
    // freopen("kk.ans","w",stdout);
    // freopen("City.inp","r",stdin);
    // freopen("City.out","w",stdout);
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
    int n;
    cin >> n;
    for (int i=1;i<n;i++)
    {
        int u,v;
        cin >> u >> v;
        ke[u].insert(v);
        ke[v].insert(u);
    }
    gg(1);
    for (int i=1;i<=n;i++)
    {
        cout << kq2[i]+1 << '\n';
    }
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 19036 KB Output is correct
2 Correct 9 ms 19196 KB Output is correct
3 Correct 8 ms 19036 KB Output is correct
4 Correct 8 ms 19036 KB Output is correct
5 Correct 9 ms 19036 KB Output is correct
6 Correct 8 ms 19036 KB Output is correct
7 Correct 8 ms 19036 KB Output is correct
8 Correct 9 ms 19088 KB Output is correct
9 Correct 8 ms 19036 KB Output is correct
10 Correct 8 ms 19036 KB Output is correct
11 Correct 8 ms 19272 KB Output is correct
12 Correct 8 ms 19292 KB Output is correct
13 Correct 8 ms 19036 KB Output is correct
14 Correct 8 ms 19060 KB Output is correct
15 Correct 7 ms 19036 KB Output is correct
16 Correct 8 ms 19252 KB Output is correct
17 Correct 8 ms 19292 KB Output is correct
18 Correct 8 ms 19032 KB Output is correct
19 Correct 8 ms 19032 KB Output is correct
20 Correct 9 ms 19032 KB Output is correct
21 Correct 8 ms 19036 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 19036 KB Output is correct
2 Correct 9 ms 19196 KB Output is correct
3 Correct 8 ms 19036 KB Output is correct
4 Correct 8 ms 19036 KB Output is correct
5 Correct 9 ms 19036 KB Output is correct
6 Correct 8 ms 19036 KB Output is correct
7 Correct 8 ms 19036 KB Output is correct
8 Correct 9 ms 19088 KB Output is correct
9 Correct 8 ms 19036 KB Output is correct
10 Correct 8 ms 19036 KB Output is correct
11 Correct 8 ms 19272 KB Output is correct
12 Correct 8 ms 19292 KB Output is correct
13 Correct 8 ms 19036 KB Output is correct
14 Correct 8 ms 19060 KB Output is correct
15 Correct 7 ms 19036 KB Output is correct
16 Correct 8 ms 19252 KB Output is correct
17 Correct 8 ms 19292 KB Output is correct
18 Correct 8 ms 19032 KB Output is correct
19 Correct 8 ms 19032 KB Output is correct
20 Correct 9 ms 19032 KB Output is correct
21 Correct 8 ms 19036 KB Output is correct
22 Correct 10 ms 19800 KB Output is correct
23 Correct 10 ms 19636 KB Output is correct
24 Correct 10 ms 19804 KB Output is correct
25 Correct 14 ms 19852 KB Output is correct
26 Correct 13 ms 19804 KB Output is correct
27 Correct 11 ms 19800 KB Output is correct
28 Correct 10 ms 19804 KB Output is correct
29 Correct 10 ms 19812 KB Output is correct
30 Correct 10 ms 19648 KB Output is correct
31 Correct 10 ms 19632 KB Output is correct
32 Correct 11 ms 19828 KB Output is correct
33 Correct 11 ms 20056 KB Output is correct
34 Correct 10 ms 19800 KB Output is correct
35 Correct 10 ms 19804 KB Output is correct
36 Correct 11 ms 19712 KB Output is correct
37 Correct 10 ms 19780 KB Output is correct
38 Correct 10 ms 20032 KB Output is correct

Subtask #3
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 19036 KB Output is correct
2 Correct 9 ms 19196 KB Output is correct
3 Correct 8 ms 19036 KB Output is correct
4 Correct 8 ms 19036 KB Output is correct
5 Correct 9 ms 19036 KB Output is correct
6 Correct 8 ms 19036 KB Output is correct
7 Correct 8 ms 19036 KB Output is correct
8 Correct 9 ms 19088 KB Output is correct
9 Correct 8 ms 19036 KB Output is correct
10 Correct 8 ms 19036 KB Output is correct
11 Correct 8 ms 19272 KB Output is correct
12 Correct 8 ms 19292 KB Output is correct
13 Correct 8 ms 19036 KB Output is correct
14 Correct 8 ms 19060 KB Output is correct
15 Correct 7 ms 19036 KB Output is correct
16 Correct 8 ms 19252 KB Output is correct
17 Correct 8 ms 19292 KB Output is correct
18 Correct 8 ms 19032 KB Output is correct
19 Correct 8 ms 19032 KB Output is correct
20 Correct 9 ms 19032 KB Output is correct
21 Correct 8 ms 19036 KB Output is correct
22 Correct 10 ms 19800 KB Output is correct
23 Correct 10 ms 19636 KB Output is correct
24 Correct 10 ms 19804 KB Output is correct
25 Correct 14 ms 19852 KB Output is correct
26 Correct 13 ms 19804 KB Output is correct
27 Correct 11 ms 19800 KB Output is correct
28 Correct 10 ms 19804 KB Output is correct
29 Correct 10 ms 19812 KB Output is correct
30 Correct 10 ms 19648 KB Output is correct
31 Correct 10 ms 19632 KB Output is correct
32 Correct 11 ms 19828 KB Output is correct
33 Correct 11 ms 20056 KB Output is correct
34 Correct 10 ms 19800 KB Output is correct
35 Correct 10 ms 19804 KB Output is correct
36 Correct 11 ms 19712 KB Output is correct
37 Correct 10 ms 19780 KB Output is correct
38 Correct 10 ms 20032 KB Output is correct
39 Correct 322 ms 48024 KB Output is correct
40 Correct 280 ms 47440 KB Output is correct
41 Correct 279 ms 47928 KB Output is correct
42 Correct 288 ms 48576 KB Output is correct
43 Correct 275 ms 48468 KB Output is correct
44 Correct 266 ms 48320 KB Output is correct
45 Correct 399 ms 52908 KB Output is correct
46 Correct 339 ms 56992 KB Output is correct
47 Correct 220 ms 53328 KB Output is correct
48 Correct 182 ms 56404 KB Output is correct
49 Correct 300 ms 48968 KB Output is correct
50 Correct 190 ms 49228 KB Output is correct
51 Correct 274 ms 59476 KB Output is correct