답안 #1111126

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1111126	2024-11-11T14:49:15 Z	Luvidi	Cat Exercise (JOI23_ho_t4)	C++17	100 / 100	283 ms	46472 KB

Main

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

#define ll long long

const int maxn=2e5;
vector<int> adj[maxn];
int sp[maxn][20],dt[maxn],par[maxn];

void dfs(int v,int p){
    for(int u:adj[v])if(u!=p){
        dt[u]=dt[v]+1;
        sp[u][0]=v;
        dfs(u,v);
    }
}

int lca(int v1,int v2){
    for(int i=19;i>-1;i--){
        if(dt[v1]-(1<<i)>=dt[v2])v1=sp[v1][i];
        if(dt[v2]-(1<<i)>=dt[v1])v2=sp[v2][i];
    }
    for(int i=19;i>-1;i--){
        if(sp[v1][i]!=sp[v2][i]){
            v1=sp[v1][i];
            v2=sp[v2][i];
        }
    }
    if(v1!=v2)v1=sp[v1][0];
    return v1;
}

ll dist(int v1,int v2){
    int x=lca(v1,v2);
    return dt[v1]+dt[v2]-2*dt[x];
}

int rep(int v){
    if(v==par[v])return v;
    return par[v]=rep(par[v]);
}

void join(int x,int y){
    x=rep(x);y=rep(y);
    par[x]=y;
}

int main(){
    int n;
    cin>>n;
    int p[n];
    for(int i=0;i<n;i++)cin>>p[i];
    for(int i=0;i<n-1;i++){
        int u,v;
        cin>>u>>v;
        adj[--u].push_back(--v);
        adj[v].push_back(u);
    }
    int idx[n+1];
    for(int i=0;i<n;i++)idx[p[i]]=i;
    dfs(0,0);
    for(int i=1;i<20;i++){
        for(int j=0;j<n;j++){
            sp[j][i]=sp[sp[j][i-1]][i-1];
        }
    }
    iota(par,par+n,0);
    ll dp[n+1];
    for(int i=1;i<=n;i++){
        dp[i]=0;
        int v=idx[i];
        for(int u:adj[v])if(p[u]<p[v]){
            u=rep(u);
            join(u,v);
            dp[i]=max(dp[i],dp[p[u]]+dist(u,v));
        }
    }
    cout<<dp[n]<<'\n';
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	5712 KB	Output is correct
2	Correct	2 ms	5712 KB	Output is correct
3	Correct	2 ms	5712 KB	Output is correct
4	Correct	2 ms	5712 KB	Output is correct
5	Correct	2 ms	5712 KB	Output is correct
6	Correct	2 ms	5884 KB	Output is correct
7	Correct	2 ms	5712 KB	Output is correct
8	Correct	2 ms	5712 KB	Output is correct
9	Correct	2 ms	5712 KB	Output is correct
10	Correct	2 ms	5712 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	5712 KB	Output is correct
2	Correct	2 ms	5712 KB	Output is correct
3	Correct	2 ms	5712 KB	Output is correct
4	Correct	2 ms	5712 KB	Output is correct
5	Correct	2 ms	5712 KB	Output is correct
6	Correct	2 ms	5884 KB	Output is correct
7	Correct	2 ms	5712 KB	Output is correct
8	Correct	2 ms	5712 KB	Output is correct
9	Correct	2 ms	5712 KB	Output is correct
10	Correct	2 ms	5712 KB	Output is correct
11	Correct	2 ms	5884 KB	Output is correct
12	Correct	2 ms	5712 KB	Output is correct
13	Correct	3 ms	5712 KB	Output is correct
14	Correct	2 ms	5712 KB	Output is correct
15	Correct	2 ms	5712 KB	Output is correct
16	Correct	2 ms	5712 KB	Output is correct
17	Correct	2 ms	5712 KB	Output is correct

Subtask #3
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	5712 KB	Output is correct
2	Correct	2 ms	5712 KB	Output is correct
3	Correct	2 ms	5712 KB	Output is correct
4	Correct	2 ms	5712 KB	Output is correct
5	Correct	2 ms	5712 KB	Output is correct
6	Correct	2 ms	5884 KB	Output is correct
7	Correct	2 ms	5712 KB	Output is correct
8	Correct	2 ms	5712 KB	Output is correct
9	Correct	2 ms	5712 KB	Output is correct
10	Correct	2 ms	5712 KB	Output is correct
11	Correct	2 ms	5884 KB	Output is correct
12	Correct	2 ms	5712 KB	Output is correct
13	Correct	3 ms	5712 KB	Output is correct
14	Correct	2 ms	5712 KB	Output is correct
15	Correct	2 ms	5712 KB	Output is correct
16	Correct	2 ms	5712 KB	Output is correct
17	Correct	2 ms	5712 KB	Output is correct
18	Correct	8 ms	6480 KB	Output is correct
19	Correct	6 ms	6480 KB	Output is correct
20	Correct	6 ms	6644 KB	Output is correct
21	Correct	7 ms	6480 KB	Output is correct
22	Correct	7 ms	6480 KB	Output is correct
23	Correct	6 ms	6480 KB	Output is correct
24	Correct	6 ms	6480 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	5712 KB	Output is correct
2	Correct	2 ms	5712 KB	Output is correct
3	Correct	2 ms	5712 KB	Output is correct
4	Correct	2 ms	5712 KB	Output is correct
5	Correct	2 ms	5712 KB	Output is correct
6	Correct	2 ms	5884 KB	Output is correct
7	Correct	2 ms	5712 KB	Output is correct
8	Correct	2 ms	5712 KB	Output is correct
9	Correct	2 ms	5712 KB	Output is correct
10	Correct	2 ms	5712 KB	Output is correct
11	Correct	2 ms	5884 KB	Output is correct
12	Correct	2 ms	5712 KB	Output is correct
13	Correct	3 ms	5712 KB	Output is correct
14	Correct	2 ms	5712 KB	Output is correct
15	Correct	2 ms	5712 KB	Output is correct
16	Correct	2 ms	5712 KB	Output is correct
17	Correct	2 ms	5712 KB	Output is correct
18	Correct	8 ms	6480 KB	Output is correct
19	Correct	6 ms	6480 KB	Output is correct
20	Correct	6 ms	6644 KB	Output is correct
21	Correct	7 ms	6480 KB	Output is correct
22	Correct	7 ms	6480 KB	Output is correct
23	Correct	6 ms	6480 KB	Output is correct
24	Correct	6 ms	6480 KB	Output is correct
25	Correct	3 ms	5712 KB	Output is correct
26	Correct	7 ms	6480 KB	Output is correct
27	Correct	6 ms	6480 KB	Output is correct
28	Correct	6 ms	6480 KB	Output is correct
29	Correct	7 ms	6480 KB	Output is correct
30	Correct	7 ms	6332 KB	Output is correct
31	Correct	6 ms	6392 KB	Output is correct
32	Correct	6 ms	6224 KB	Output is correct
33	Correct	5 ms	6224 KB	Output is correct

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	5712 KB	Output is correct
2	Correct	2 ms	5712 KB	Output is correct
3	Correct	2 ms	5712 KB	Output is correct
4	Correct	2 ms	5712 KB	Output is correct
5	Correct	2 ms	5712 KB	Output is correct
6	Correct	2 ms	5884 KB	Output is correct
7	Correct	2 ms	5712 KB	Output is correct
8	Correct	2 ms	5712 KB	Output is correct
9	Correct	2 ms	5712 KB	Output is correct
10	Correct	2 ms	5712 KB	Output is correct
11	Correct	2 ms	5884 KB	Output is correct
12	Correct	2 ms	5712 KB	Output is correct
13	Correct	3 ms	5712 KB	Output is correct
14	Correct	2 ms	5712 KB	Output is correct
15	Correct	2 ms	5712 KB	Output is correct
16	Correct	2 ms	5712 KB	Output is correct
17	Correct	2 ms	5712 KB	Output is correct
18	Correct	8 ms	6480 KB	Output is correct
19	Correct	6 ms	6480 KB	Output is correct
20	Correct	6 ms	6644 KB	Output is correct
21	Correct	7 ms	6480 KB	Output is correct
22	Correct	7 ms	6480 KB	Output is correct
23	Correct	6 ms	6480 KB	Output is correct
24	Correct	6 ms	6480 KB	Output is correct
25	Correct	180 ms	42568 KB	Output is correct
26	Correct	166 ms	46408 KB	Output is correct
27	Correct	169 ms	46344 KB	Output is correct
28	Correct	185 ms	46472 KB	Output is correct
29	Correct	217 ms	46320 KB	Output is correct
30	Correct	192 ms	46408 KB	Output is correct
31	Correct	204 ms	46408 KB	Output is correct

Subtask #6
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	5712 KB	Output is correct
2	Correct	3 ms	5712 KB	Output is correct
3	Correct	212 ms	31624 KB	Output is correct
4	Correct	224 ms	35400 KB	Output is correct
5	Correct	215 ms	35400 KB	Output is correct

Subtask #7
26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	5712 KB	Output is correct
2	Correct	2 ms	5712 KB	Output is correct
3	Correct	2 ms	5712 KB	Output is correct
4	Correct	2 ms	5712 KB	Output is correct
5	Correct	2 ms	5712 KB	Output is correct
6	Correct	2 ms	5884 KB	Output is correct
7	Correct	2 ms	5712 KB	Output is correct
8	Correct	2 ms	5712 KB	Output is correct
9	Correct	2 ms	5712 KB	Output is correct
10	Correct	2 ms	5712 KB	Output is correct
11	Correct	2 ms	5884 KB	Output is correct
12	Correct	2 ms	5712 KB	Output is correct
13	Correct	3 ms	5712 KB	Output is correct
14	Correct	2 ms	5712 KB	Output is correct
15	Correct	2 ms	5712 KB	Output is correct
16	Correct	2 ms	5712 KB	Output is correct
17	Correct	2 ms	5712 KB	Output is correct
18	Correct	8 ms	6480 KB	Output is correct
19	Correct	6 ms	6480 KB	Output is correct
20	Correct	6 ms	6644 KB	Output is correct
21	Correct	7 ms	6480 KB	Output is correct
22	Correct	7 ms	6480 KB	Output is correct
23	Correct	6 ms	6480 KB	Output is correct
24	Correct	6 ms	6480 KB	Output is correct
25	Correct	3 ms	5712 KB	Output is correct
26	Correct	7 ms	6480 KB	Output is correct
27	Correct	6 ms	6480 KB	Output is correct
28	Correct	6 ms	6480 KB	Output is correct
29	Correct	7 ms	6480 KB	Output is correct
30	Correct	7 ms	6332 KB	Output is correct
31	Correct	6 ms	6392 KB	Output is correct
32	Correct	6 ms	6224 KB	Output is correct
33	Correct	5 ms	6224 KB	Output is correct
34	Correct	180 ms	42568 KB	Output is correct
35	Correct	166 ms	46408 KB	Output is correct
36	Correct	169 ms	46344 KB	Output is correct
37	Correct	185 ms	46472 KB	Output is correct
38	Correct	217 ms	46320 KB	Output is correct
39	Correct	192 ms	46408 KB	Output is correct
40	Correct	204 ms	46408 KB	Output is correct
41	Correct	2 ms	5712 KB	Output is correct
42	Correct	3 ms	5712 KB	Output is correct
43	Correct	212 ms	31624 KB	Output is correct
44	Correct	224 ms	35400 KB	Output is correct
45	Correct	215 ms	35400 KB	Output is correct
46	Correct	262 ms	40692 KB	Output is correct
47	Correct	234 ms	39752 KB	Output is correct
48	Correct	283 ms	41288 KB	Output is correct
49	Correct	210 ms	39752 KB	Output is correct
50	Correct	234 ms	35408 KB	Output is correct
51	Correct	208 ms	35448 KB	Output is correct
52	Correct	261 ms	35576 KB	Output is correct
53	Correct	271 ms	35576 KB	Output is correct

답안 #1111126

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 7.0 / 7.0

Subtask #3 7.0 / 7.0

Subtask #4 10.0 / 10.0

Subtask #5 20.0 / 20.0

Subtask #6 23.0 / 23.0

Subtask #7 26.0 / 26.0

Subtask #1
7.0 / 7.0

Subtask #2
7.0 / 7.0

Subtask #3
7.0 / 7.0

Subtask #4
10.0 / 10.0

Subtask #5
20.0 / 20.0

Subtask #6
23.0 / 23.0

Subtask #7
26.0 / 26.0