답안 #847812

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
847812	2023-09-10T13:10:10 Z	8pete8	Cat Exercise (JOI23_ho_t4)	C++17	100 / 100	212 ms	88760 KB

Main

#include<iostream>
#include<stack>
#include<map>
#include<vector>
#include<string>
#include<unordered_map>
#include <queue>
#include<cstring>
#include<algorithm>
#include<limits.h>
#include<cmath>
using namespace std;
#define ll long long
#define f first
#define endl "\n"
#define s second
#define pii pair<int,int>
#define ppii pair<int,pii>
#define pll pair<ll,ll>
#define pb push_back
#define fastio ios::sync_with_stdio(false);cin.tie(NULL);
#define int long long
#define double long double
#define mod 1000000007
const int mxn=2*1e5,lg=25;
int pa[mxn+10],n;
vector<int>adj[mxn+10];
int he[mxn+10],h[mxn+10],up[mxn+10][lg+10];
void dfs(int cur,int p){
    for(auto i:adj[cur]){
        if(i==p)continue;
        up[i][0]=cur;
        h[i]=h[cur]+1;
        dfs(i,cur);
    }
}
int lca(int a,int b){
    if(h[a]<h[b])swap(a,b);
    int k=h[a]-h[b];
    for(int i=0;i<=lg;i++)if(k&(1<<i))a=up[a][i];
    if(a==b)return a;
    for(int i=lg;i>=0;i--){
        if(up[a][i]!=up[b][i]){
            a=up[a][i];
            b=up[b][i];
        }
    }
    return up[a][0];
}
int cal(int a,int b){
    return h[a]+h[b]-(2*h[lca(a,b)]);
}
int find(int u){
    if(pa[u]==u)return u;
    return pa[u]=find(pa[u]);
}
int dp[mxn+10];//max
int32_t main(){
    fastio
    cin>>n;
    for(int i=1;i<=n;i++){
        int a;cin>>a;
        he[i]=a;
        pa[i]=i;
    }
    for(int i=0;i<n-1;i++){
        int a,b;cin>>a>>b;
        adj[he[a]].pb(he[b]);//id by height
        adj[he[b]].pb(he[a]);
    }
    dfs(n,-1);
    for(int i=1;i<=lg;i++)for(int j=1;j<=n;j++)up[j][i]=up[up[j][i-1]][i-1];
    for(int i=1;i<=n;i++){
        for(auto j:adj[i]){
            int c=find(j);
            if(c<i){
                dp[i]=max(dp[i],dp[c]+cal(i,c));
                pa[c]=i;
            }
        }
    }
    cout<<dp[n];
    return 0;
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	9048 KB	Output is correct
2	Correct	2 ms	9052 KB	Output is correct
3	Correct	2 ms	9048 KB	Output is correct
4	Correct	2 ms	9052 KB	Output is correct
5	Correct	2 ms	9048 KB	Output is correct
6	Correct	2 ms	9052 KB	Output is correct
7	Correct	1 ms	9048 KB	Output is correct
8	Correct	3 ms	9196 KB	Output is correct
9	Correct	2 ms	9048 KB	Output is correct
10	Correct	2 ms	9048 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	9048 KB	Output is correct
2	Correct	2 ms	9052 KB	Output is correct
3	Correct	2 ms	9048 KB	Output is correct
4	Correct	2 ms	9052 KB	Output is correct
5	Correct	2 ms	9048 KB	Output is correct
6	Correct	2 ms	9052 KB	Output is correct
7	Correct	1 ms	9048 KB	Output is correct
8	Correct	3 ms	9196 KB	Output is correct
9	Correct	2 ms	9048 KB	Output is correct
10	Correct	2 ms	9048 KB	Output is correct
11	Correct	2 ms	9048 KB	Output is correct
12	Correct	2 ms	9052 KB	Output is correct
13	Correct	2 ms	9048 KB	Output is correct
14	Correct	2 ms	9048 KB	Output is correct
15	Correct	2 ms	9048 KB	Output is correct
16	Correct	2 ms	9052 KB	Output is correct
17	Correct	2 ms	9048 KB	Output is correct

Subtask #3
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	9048 KB	Output is correct
2	Correct	2 ms	9052 KB	Output is correct
3	Correct	2 ms	9048 KB	Output is correct
4	Correct	2 ms	9052 KB	Output is correct
5	Correct	2 ms	9048 KB	Output is correct
6	Correct	2 ms	9052 KB	Output is correct
7	Correct	1 ms	9048 KB	Output is correct
8	Correct	3 ms	9196 KB	Output is correct
9	Correct	2 ms	9048 KB	Output is correct
10	Correct	2 ms	9048 KB	Output is correct
11	Correct	2 ms	9048 KB	Output is correct
12	Correct	2 ms	9052 KB	Output is correct
13	Correct	2 ms	9048 KB	Output is correct
14	Correct	2 ms	9048 KB	Output is correct
15	Correct	2 ms	9048 KB	Output is correct
16	Correct	2 ms	9052 KB	Output is correct
17	Correct	2 ms	9048 KB	Output is correct
18	Correct	4 ms	11724 KB	Output is correct
19	Correct	4 ms	11612 KB	Output is correct
20	Correct	4 ms	11608 KB	Output is correct
21	Correct	4 ms	11608 KB	Output is correct
22	Correct	4 ms	11608 KB	Output is correct
23	Correct	5 ms	11640 KB	Output is correct
24	Correct	4 ms	11608 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	9048 KB	Output is correct
2	Correct	2 ms	9052 KB	Output is correct
3	Correct	2 ms	9048 KB	Output is correct
4	Correct	2 ms	9052 KB	Output is correct
5	Correct	2 ms	9048 KB	Output is correct
6	Correct	2 ms	9052 KB	Output is correct
7	Correct	1 ms	9048 KB	Output is correct
8	Correct	3 ms	9196 KB	Output is correct
9	Correct	2 ms	9048 KB	Output is correct
10	Correct	2 ms	9048 KB	Output is correct
11	Correct	2 ms	9048 KB	Output is correct
12	Correct	2 ms	9052 KB	Output is correct
13	Correct	2 ms	9048 KB	Output is correct
14	Correct	2 ms	9048 KB	Output is correct
15	Correct	2 ms	9048 KB	Output is correct
16	Correct	2 ms	9052 KB	Output is correct
17	Correct	2 ms	9048 KB	Output is correct
18	Correct	4 ms	11724 KB	Output is correct
19	Correct	4 ms	11612 KB	Output is correct
20	Correct	4 ms	11608 KB	Output is correct
21	Correct	4 ms	11608 KB	Output is correct
22	Correct	4 ms	11608 KB	Output is correct
23	Correct	5 ms	11640 KB	Output is correct
24	Correct	4 ms	11608 KB	Output is correct
25	Correct	2 ms	9048 KB	Output is correct
26	Correct	4 ms	11612 KB	Output is correct
27	Correct	4 ms	11608 KB	Output is correct
28	Correct	4 ms	11608 KB	Output is correct
29	Correct	4 ms	11608 KB	Output is correct
30	Correct	4 ms	11356 KB	Output is correct
31	Correct	4 ms	11356 KB	Output is correct
32	Correct	4 ms	11356 KB	Output is correct
33	Correct	4 ms	11352 KB	Output is correct

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	9048 KB	Output is correct
2	Correct	2 ms	9052 KB	Output is correct
3	Correct	2 ms	9048 KB	Output is correct
4	Correct	2 ms	9052 KB	Output is correct
5	Correct	2 ms	9048 KB	Output is correct
6	Correct	2 ms	9052 KB	Output is correct
7	Correct	1 ms	9048 KB	Output is correct
8	Correct	3 ms	9196 KB	Output is correct
9	Correct	2 ms	9048 KB	Output is correct
10	Correct	2 ms	9048 KB	Output is correct
11	Correct	2 ms	9048 KB	Output is correct
12	Correct	2 ms	9052 KB	Output is correct
13	Correct	2 ms	9048 KB	Output is correct
14	Correct	2 ms	9048 KB	Output is correct
15	Correct	2 ms	9048 KB	Output is correct
16	Correct	2 ms	9052 KB	Output is correct
17	Correct	2 ms	9048 KB	Output is correct
18	Correct	4 ms	11724 KB	Output is correct
19	Correct	4 ms	11612 KB	Output is correct
20	Correct	4 ms	11608 KB	Output is correct
21	Correct	4 ms	11608 KB	Output is correct
22	Correct	4 ms	11608 KB	Output is correct
23	Correct	5 ms	11640 KB	Output is correct
24	Correct	4 ms	11608 KB	Output is correct
25	Correct	129 ms	88760 KB	Output is correct
26	Correct	127 ms	88400 KB	Output is correct
27	Correct	135 ms	88656 KB	Output is correct
28	Correct	153 ms	85584 KB	Output is correct
29	Correct	154 ms	87348 KB	Output is correct
30	Correct	155 ms	86640 KB	Output is correct
31	Correct	177 ms	87352 KB	Output is correct

Subtask #6
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	9048 KB	Output is correct
2	Correct	2 ms	9052 KB	Output is correct
3	Correct	169 ms	77476 KB	Output is correct
4	Correct	157 ms	77648 KB	Output is correct
5	Correct	163 ms	77504 KB	Output is correct

Subtask #7
26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	9048 KB	Output is correct
2	Correct	2 ms	9052 KB	Output is correct
3	Correct	2 ms	9048 KB	Output is correct
4	Correct	2 ms	9052 KB	Output is correct
5	Correct	2 ms	9048 KB	Output is correct
6	Correct	2 ms	9052 KB	Output is correct
7	Correct	1 ms	9048 KB	Output is correct
8	Correct	3 ms	9196 KB	Output is correct
9	Correct	2 ms	9048 KB	Output is correct
10	Correct	2 ms	9048 KB	Output is correct
11	Correct	2 ms	9048 KB	Output is correct
12	Correct	2 ms	9052 KB	Output is correct
13	Correct	2 ms	9048 KB	Output is correct
14	Correct	2 ms	9048 KB	Output is correct
15	Correct	2 ms	9048 KB	Output is correct
16	Correct	2 ms	9052 KB	Output is correct
17	Correct	2 ms	9048 KB	Output is correct
18	Correct	4 ms	11724 KB	Output is correct
19	Correct	4 ms	11612 KB	Output is correct
20	Correct	4 ms	11608 KB	Output is correct
21	Correct	4 ms	11608 KB	Output is correct
22	Correct	4 ms	11608 KB	Output is correct
23	Correct	5 ms	11640 KB	Output is correct
24	Correct	4 ms	11608 KB	Output is correct
25	Correct	2 ms	9048 KB	Output is correct
26	Correct	4 ms	11612 KB	Output is correct
27	Correct	4 ms	11608 KB	Output is correct
28	Correct	4 ms	11608 KB	Output is correct
29	Correct	4 ms	11608 KB	Output is correct
30	Correct	4 ms	11356 KB	Output is correct
31	Correct	4 ms	11356 KB	Output is correct
32	Correct	4 ms	11356 KB	Output is correct
33	Correct	4 ms	11352 KB	Output is correct
34	Correct	129 ms	88760 KB	Output is correct
35	Correct	127 ms	88400 KB	Output is correct
36	Correct	135 ms	88656 KB	Output is correct
37	Correct	153 ms	85584 KB	Output is correct
38	Correct	154 ms	87348 KB	Output is correct
39	Correct	155 ms	86640 KB	Output is correct
40	Correct	177 ms	87352 KB	Output is correct
41	Correct	2 ms	9048 KB	Output is correct
42	Correct	2 ms	9052 KB	Output is correct
43	Correct	169 ms	77476 KB	Output is correct
44	Correct	157 ms	77648 KB	Output is correct
45	Correct	163 ms	77504 KB	Output is correct
46	Correct	144 ms	85328 KB	Output is correct
47	Correct	152 ms	85328 KB	Output is correct
48	Correct	142 ms	86740 KB	Output is correct
49	Correct	161 ms	85272 KB	Output is correct
50	Correct	182 ms	77392 KB	Output is correct
51	Correct	212 ms	77288 KB	Output is correct
52	Correct	170 ms	77280 KB	Output is correct
53	Correct	178 ms	77232 KB	Output is correct

답안 #847812

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