답안 #930466

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
930466	2024-02-20T00:42:54 Z	Darren0724	Cat Exercise (JOI23_ho_t4)	C++17	100 / 100	302 ms	49620 KB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long 
#define LCBorz ios_base::sync_with_stdio(false); cin.tie(0);
#define all(x) x.begin(), x.end()
const int N=200005;
const int K=20;
vector<int> pa(N);
int Find(int k){
    return (pa[k]==k?k:pa[k]=Find(pa[k]));
}
void onion(int a,int b){
    a=Find(a),b=Find(b);
    if(a!=b)pa[a]=b;
}
int32_t main() {
    LCBorz;
    iota(all(pa),0);
    int n;cin>>n;
    vector<int> v(N),v1(N),dp(N),adj[N],dis(N);
    vector jump(K,vector(N,0));
    for(int i=1;i<=n;i++){
        cin>>v[i];
        v1[v[i]]=i;
    }
    for(int i=1;i<n;i++){
        int a,b;cin>>a>>b;
        adj[a].push_back(b);
        adj[b].push_back(a);
    }
    auto dfs=[&](auto dfs1,int k)->void {
        for(int i=1;i<K;i++){
            jump[i][k]=jump[i-1][jump[i-1][k]];
        }
        for(int j:adj[k]){
            if(j==jump[0][k])continue;
            jump[0][j]=k;
            dis[j]=dis[k]+1;
            dfs1(dfs1,j);
        }
    };
    auto lca=[&](int a,int b)->int {
        if(dis[a]<dis[b])swap(a,b);
        int d=dis[a]-dis[b];
        for(int i=K-1;i>=0;i--){
            if(d&(1<<i)){
                a=jump[i][a];
            }
        }
        if(a==b)return a;
        for(int i=K-1;i>=0;i--){
            if(jump[i][a]!=jump[i][b]){
                a=jump[i][a],b=jump[i][b];
            }
        }
        return jump[0][a];
    };
    auto far=[&](int a,int b){
        return dis[a]+dis[b]-2*dis[lca(a,b)];
    };
    jump[0][1]=1;
    dfs(dfs,1);
    for(int i1=1;i1<=n;i1++){
        int i=v1[i1];
        for(int j:adj[i]){
            if(v[j]>v[i])continue;
            int p=Find(j);
            dp[i]=max(dp[i],dp[p]+far(i,p));
            onion(p,i);
        }
    }
    cout<<dp[v1[n]]<<endl;

    return 0;
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	29272 KB	Output is correct
2	Correct	13 ms	29528 KB	Output is correct
3	Correct	13 ms	29276 KB	Output is correct
4	Correct	13 ms	29276 KB	Output is correct
5	Correct	16 ms	29280 KB	Output is correct
6	Correct	13 ms	29276 KB	Output is correct
7	Correct	13 ms	29272 KB	Output is correct
8	Correct	13 ms	29276 KB	Output is correct
9	Correct	13 ms	29312 KB	Output is correct
10	Correct	13 ms	29276 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	29272 KB	Output is correct
2	Correct	13 ms	29528 KB	Output is correct
3	Correct	13 ms	29276 KB	Output is correct
4	Correct	13 ms	29276 KB	Output is correct
5	Correct	16 ms	29280 KB	Output is correct
6	Correct	13 ms	29276 KB	Output is correct
7	Correct	13 ms	29272 KB	Output is correct
8	Correct	13 ms	29276 KB	Output is correct
9	Correct	13 ms	29312 KB	Output is correct
10	Correct	13 ms	29276 KB	Output is correct
11	Correct	14 ms	29272 KB	Output is correct
12	Correct	13 ms	29276 KB	Output is correct
13	Correct	14 ms	29276 KB	Output is correct
14	Correct	13 ms	29276 KB	Output is correct
15	Correct	13 ms	29276 KB	Output is correct
16	Correct	13 ms	29276 KB	Output is correct
17	Correct	13 ms	29276 KB	Output is correct

Subtask #3
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	29272 KB	Output is correct
2	Correct	13 ms	29528 KB	Output is correct
3	Correct	13 ms	29276 KB	Output is correct
4	Correct	13 ms	29276 KB	Output is correct
5	Correct	16 ms	29280 KB	Output is correct
6	Correct	13 ms	29276 KB	Output is correct
7	Correct	13 ms	29272 KB	Output is correct
8	Correct	13 ms	29276 KB	Output is correct
9	Correct	13 ms	29312 KB	Output is correct
10	Correct	13 ms	29276 KB	Output is correct
11	Correct	14 ms	29272 KB	Output is correct
12	Correct	13 ms	29276 KB	Output is correct
13	Correct	14 ms	29276 KB	Output is correct
14	Correct	13 ms	29276 KB	Output is correct
15	Correct	13 ms	29276 KB	Output is correct
16	Correct	13 ms	29276 KB	Output is correct
17	Correct	13 ms	29276 KB	Output is correct
18	Correct	15 ms	29276 KB	Output is correct
19	Correct	16 ms	29276 KB	Output is correct
20	Correct	15 ms	29276 KB	Output is correct
21	Correct	16 ms	29276 KB	Output is correct
22	Correct	15 ms	29276 KB	Output is correct
23	Correct	15 ms	29276 KB	Output is correct
24	Correct	15 ms	29276 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	29272 KB	Output is correct
2	Correct	13 ms	29528 KB	Output is correct
3	Correct	13 ms	29276 KB	Output is correct
4	Correct	13 ms	29276 KB	Output is correct
5	Correct	16 ms	29280 KB	Output is correct
6	Correct	13 ms	29276 KB	Output is correct
7	Correct	13 ms	29272 KB	Output is correct
8	Correct	13 ms	29276 KB	Output is correct
9	Correct	13 ms	29312 KB	Output is correct
10	Correct	13 ms	29276 KB	Output is correct
11	Correct	14 ms	29272 KB	Output is correct
12	Correct	13 ms	29276 KB	Output is correct
13	Correct	14 ms	29276 KB	Output is correct
14	Correct	13 ms	29276 KB	Output is correct
15	Correct	13 ms	29276 KB	Output is correct
16	Correct	13 ms	29276 KB	Output is correct
17	Correct	13 ms	29276 KB	Output is correct
18	Correct	15 ms	29276 KB	Output is correct
19	Correct	16 ms	29276 KB	Output is correct
20	Correct	15 ms	29276 KB	Output is correct
21	Correct	16 ms	29276 KB	Output is correct
22	Correct	15 ms	29276 KB	Output is correct
23	Correct	15 ms	29276 KB	Output is correct
24	Correct	15 ms	29276 KB	Output is correct
25	Correct	13 ms	29272 KB	Output is correct
26	Correct	17 ms	29276 KB	Output is correct
27	Correct	17 ms	29276 KB	Output is correct
28	Correct	16 ms	29276 KB	Output is correct
29	Correct	16 ms	29344 KB	Output is correct
30	Correct	16 ms	29276 KB	Output is correct
31	Correct	17 ms	29488 KB	Output is correct
32	Correct	16 ms	29272 KB	Output is correct
33	Correct	16 ms	29528 KB	Output is correct

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	29272 KB	Output is correct
2	Correct	13 ms	29528 KB	Output is correct
3	Correct	13 ms	29276 KB	Output is correct
4	Correct	13 ms	29276 KB	Output is correct
5	Correct	16 ms	29280 KB	Output is correct
6	Correct	13 ms	29276 KB	Output is correct
7	Correct	13 ms	29272 KB	Output is correct
8	Correct	13 ms	29276 KB	Output is correct
9	Correct	13 ms	29312 KB	Output is correct
10	Correct	13 ms	29276 KB	Output is correct
11	Correct	14 ms	29272 KB	Output is correct
12	Correct	13 ms	29276 KB	Output is correct
13	Correct	14 ms	29276 KB	Output is correct
14	Correct	13 ms	29276 KB	Output is correct
15	Correct	13 ms	29276 KB	Output is correct
16	Correct	13 ms	29276 KB	Output is correct
17	Correct	13 ms	29276 KB	Output is correct
18	Correct	15 ms	29276 KB	Output is correct
19	Correct	16 ms	29276 KB	Output is correct
20	Correct	15 ms	29276 KB	Output is correct
21	Correct	16 ms	29276 KB	Output is correct
22	Correct	15 ms	29276 KB	Output is correct
23	Correct	15 ms	29276 KB	Output is correct
24	Correct	15 ms	29276 KB	Output is correct
25	Correct	113 ms	45496 KB	Output is correct
26	Correct	119 ms	49472 KB	Output is correct
27	Correct	123 ms	49516 KB	Output is correct
28	Correct	172 ms	49620 KB	Output is correct
29	Correct	153 ms	49464 KB	Output is correct
30	Correct	148 ms	49512 KB	Output is correct
31	Correct	154 ms	49508 KB	Output is correct

Subtask #6
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	14 ms	29460 KB	Output is correct
2	Correct	13 ms	29272 KB	Output is correct
3	Correct	161 ms	36352 KB	Output is correct
4	Correct	162 ms	36416 KB	Output is correct
5	Correct	204 ms	36416 KB	Output is correct

Subtask #7
26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	29272 KB	Output is correct
2	Correct	13 ms	29528 KB	Output is correct
3	Correct	13 ms	29276 KB	Output is correct
4	Correct	13 ms	29276 KB	Output is correct
5	Correct	16 ms	29280 KB	Output is correct
6	Correct	13 ms	29276 KB	Output is correct
7	Correct	13 ms	29272 KB	Output is correct
8	Correct	13 ms	29276 KB	Output is correct
9	Correct	13 ms	29312 KB	Output is correct
10	Correct	13 ms	29276 KB	Output is correct
11	Correct	14 ms	29272 KB	Output is correct
12	Correct	13 ms	29276 KB	Output is correct
13	Correct	14 ms	29276 KB	Output is correct
14	Correct	13 ms	29276 KB	Output is correct
15	Correct	13 ms	29276 KB	Output is correct
16	Correct	13 ms	29276 KB	Output is correct
17	Correct	13 ms	29276 KB	Output is correct
18	Correct	15 ms	29276 KB	Output is correct
19	Correct	16 ms	29276 KB	Output is correct
20	Correct	15 ms	29276 KB	Output is correct
21	Correct	16 ms	29276 KB	Output is correct
22	Correct	15 ms	29276 KB	Output is correct
23	Correct	15 ms	29276 KB	Output is correct
24	Correct	15 ms	29276 KB	Output is correct
25	Correct	13 ms	29272 KB	Output is correct
26	Correct	17 ms	29276 KB	Output is correct
27	Correct	17 ms	29276 KB	Output is correct
28	Correct	16 ms	29276 KB	Output is correct
29	Correct	16 ms	29344 KB	Output is correct
30	Correct	16 ms	29276 KB	Output is correct
31	Correct	17 ms	29488 KB	Output is correct
32	Correct	16 ms	29272 KB	Output is correct
33	Correct	16 ms	29528 KB	Output is correct
34	Correct	113 ms	45496 KB	Output is correct
35	Correct	119 ms	49472 KB	Output is correct
36	Correct	123 ms	49516 KB	Output is correct
37	Correct	172 ms	49620 KB	Output is correct
38	Correct	153 ms	49464 KB	Output is correct
39	Correct	148 ms	49512 KB	Output is correct
40	Correct	154 ms	49508 KB	Output is correct
41	Correct	14 ms	29460 KB	Output is correct
42	Correct	13 ms	29272 KB	Output is correct
43	Correct	161 ms	36352 KB	Output is correct
44	Correct	162 ms	36416 KB	Output is correct
45	Correct	204 ms	36416 KB	Output is correct
46	Correct	272 ms	45060 KB	Output is correct
47	Correct	302 ms	44096 KB	Output is correct
48	Correct	274 ms	45744 KB	Output is correct
49	Correct	293 ms	44100 KB	Output is correct
50	Correct	252 ms	39744 KB	Output is correct
51	Correct	244 ms	39768 KB	Output is correct
52	Correct	266 ms	39580 KB	Output is correct
53	Correct	259 ms	39928 KB	Output is correct

답안 #930466

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