답안 #1063813

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1063813	2024-08-18T03:37:25 Z	imarn	Cat Exercise (JOI23_ho_t4)	C++14	100 / 100	128 ms	41136 KB

Main

#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC target("avx2")
#define ll long long
#define pii pair<ll,ll>
#define pll pair<ll,ll>
#define plx pair<ll,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vl vector<ll>
#define vvi vector<vi>
using namespace std;
const int mxn=2e5+5;
vector<int>g[mxn];
int pr[mxn]{0},h[mxn]{0},up[mxn][20]{0},d[mxn]{0};
void dfs(int u,int p){
    up[u][0]=p;
    for(int i=1;i<20;i++)up[u][i]=up[up[u][i-1]][i-1];
    for(auto v:g[u]){
        if(v==p)continue;
        d[v]=d[u]+1;dfs(v,u);
    }
}
int get(int r){
    return pr[r]==r?r:pr[r]=get(pr[r]);
}
int lca(int a,int b){
    if(d[b]<d[a])swap(a,b);
    for(int i=19;i>=0;i--)if(d[b]-(1<<i)>=d[a])b=up[b][i];
    if(a==b)return a;
    for(int i=19;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 d[a]+d[b]-2*d[lca(a,b)];
}
ll dp[mxn]{0};
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n;cin>>n;iota(pr,pr+n+1,0);
    for(int i=1;i<=n;i++)cin>>h[i];
    for(int i=1;i<=n-1;i++){
        int a,b;cin>>a>>b;
        g[h[a]].pb(h[b]);g[h[b]].pb(h[a]);
    }dfs(1,1);
    for(int i=1;i<=n;i++){
        for(auto v:g[i]){
            int vv=get(v);
            if(vv<i){
                dp[i]=max(dp[i],dp[vv]+cal(i,vv));
                pr[vv]=i;
            }
        }
    }cout<<dp[n];
}

Subtask #1
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 KB	Output is correct
2	Correct	2 ms	4956 KB	Output is correct
3	Correct	3 ms	4956 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	2 ms	4956 KB	Output is correct
6	Correct	2 ms	5160 KB	Output is correct
7	Correct	2 ms	5160 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	4956 KB	Output is correct

Subtask #2
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 KB	Output is correct
2	Correct	2 ms	4956 KB	Output is correct
3	Correct	3 ms	4956 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	2 ms	4956 KB	Output is correct
6	Correct	2 ms	5160 KB	Output is correct
7	Correct	2 ms	5160 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	4956 KB	Output is correct
11	Correct	2 ms	5212 KB	Output is correct
12	Correct	2 ms	5160 KB	Output is correct
13	Correct	2 ms	5212 KB	Output is correct
14	Correct	2 ms	5212 KB	Output is correct
15	Correct	2 ms	5212 KB	Output is correct
16	Correct	2 ms	5212 KB	Output is correct
17	Correct	2 ms	5212 KB	Output is correct

Subtask #3
7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 KB	Output is correct
2	Correct	2 ms	4956 KB	Output is correct
3	Correct	3 ms	4956 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	2 ms	4956 KB	Output is correct
6	Correct	2 ms	5160 KB	Output is correct
7	Correct	2 ms	5160 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	4956 KB	Output is correct
11	Correct	2 ms	5212 KB	Output is correct
12	Correct	2 ms	5160 KB	Output is correct
13	Correct	2 ms	5212 KB	Output is correct
14	Correct	2 ms	5212 KB	Output is correct
15	Correct	2 ms	5212 KB	Output is correct
16	Correct	2 ms	5212 KB	Output is correct
17	Correct	2 ms	5212 KB	Output is correct
18	Correct	4 ms	5980 KB	Output is correct
19	Correct	4 ms	5980 KB	Output is correct
20	Correct	3 ms	5980 KB	Output is correct
21	Correct	4 ms	5980 KB	Output is correct
22	Correct	4 ms	5980 KB	Output is correct
23	Correct	3 ms	5980 KB	Output is correct
24	Correct	3 ms	5980 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 KB	Output is correct
2	Correct	2 ms	4956 KB	Output is correct
3	Correct	3 ms	4956 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	2 ms	4956 KB	Output is correct
6	Correct	2 ms	5160 KB	Output is correct
7	Correct	2 ms	5160 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	4956 KB	Output is correct
11	Correct	2 ms	5212 KB	Output is correct
12	Correct	2 ms	5160 KB	Output is correct
13	Correct	2 ms	5212 KB	Output is correct
14	Correct	2 ms	5212 KB	Output is correct
15	Correct	2 ms	5212 KB	Output is correct
16	Correct	2 ms	5212 KB	Output is correct
17	Correct	2 ms	5212 KB	Output is correct
18	Correct	4 ms	5980 KB	Output is correct
19	Correct	4 ms	5980 KB	Output is correct
20	Correct	3 ms	5980 KB	Output is correct
21	Correct	4 ms	5980 KB	Output is correct
22	Correct	4 ms	5980 KB	Output is correct
23	Correct	3 ms	5980 KB	Output is correct
24	Correct	3 ms	5980 KB	Output is correct
25	Correct	2 ms	4956 KB	Output is correct
26	Correct	4 ms	5980 KB	Output is correct
27	Correct	3 ms	5980 KB	Output is correct
28	Correct	3 ms	5980 KB	Output is correct
29	Correct	4 ms	5980 KB	Output is correct
30	Correct	4 ms	5808 KB	Output is correct
31	Correct	4 ms	5724 KB	Output is correct
32	Correct	4 ms	5724 KB	Output is correct
33	Correct	4 ms	5724 KB	Output is correct

Subtask #5
20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 KB	Output is correct
2	Correct	2 ms	4956 KB	Output is correct
3	Correct	3 ms	4956 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	2 ms	4956 KB	Output is correct
6	Correct	2 ms	5160 KB	Output is correct
7	Correct	2 ms	5160 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	4956 KB	Output is correct
11	Correct	2 ms	5212 KB	Output is correct
12	Correct	2 ms	5160 KB	Output is correct
13	Correct	2 ms	5212 KB	Output is correct
14	Correct	2 ms	5212 KB	Output is correct
15	Correct	2 ms	5212 KB	Output is correct
16	Correct	2 ms	5212 KB	Output is correct
17	Correct	2 ms	5212 KB	Output is correct
18	Correct	4 ms	5980 KB	Output is correct
19	Correct	4 ms	5980 KB	Output is correct
20	Correct	3 ms	5980 KB	Output is correct
21	Correct	4 ms	5980 KB	Output is correct
22	Correct	4 ms	5980 KB	Output is correct
23	Correct	3 ms	5980 KB	Output is correct
24	Correct	3 ms	5980 KB	Output is correct
25	Correct	110 ms	37892 KB	Output is correct
26	Correct	78 ms	41064 KB	Output is correct
27	Correct	76 ms	41136 KB	Output is correct
28	Correct	122 ms	40788 KB	Output is correct
29	Correct	128 ms	37968 KB	Output is correct
30	Correct	119 ms	40016 KB	Output is correct
31	Correct	113 ms	39508 KB	Output is correct

Subtask #6
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 KB	Output is correct
2	Correct	2 ms	5212 KB	Output is correct
3	Correct	94 ms	34392 KB	Output is correct
4	Correct	102 ms	34644 KB	Output is correct
5	Correct	111 ms	34640 KB	Output is correct

Subtask #7
26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 KB	Output is correct
2	Correct	2 ms	4956 KB	Output is correct
3	Correct	3 ms	4956 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	2 ms	4956 KB	Output is correct
6	Correct	2 ms	5160 KB	Output is correct
7	Correct	2 ms	5160 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	4956 KB	Output is correct
11	Correct	2 ms	5212 KB	Output is correct
12	Correct	2 ms	5160 KB	Output is correct
13	Correct	2 ms	5212 KB	Output is correct
14	Correct	2 ms	5212 KB	Output is correct
15	Correct	2 ms	5212 KB	Output is correct
16	Correct	2 ms	5212 KB	Output is correct
17	Correct	2 ms	5212 KB	Output is correct
18	Correct	4 ms	5980 KB	Output is correct
19	Correct	4 ms	5980 KB	Output is correct
20	Correct	3 ms	5980 KB	Output is correct
21	Correct	4 ms	5980 KB	Output is correct
22	Correct	4 ms	5980 KB	Output is correct
23	Correct	3 ms	5980 KB	Output is correct
24	Correct	3 ms	5980 KB	Output is correct
25	Correct	2 ms	4956 KB	Output is correct
26	Correct	4 ms	5980 KB	Output is correct
27	Correct	3 ms	5980 KB	Output is correct
28	Correct	3 ms	5980 KB	Output is correct
29	Correct	4 ms	5980 KB	Output is correct
30	Correct	4 ms	5808 KB	Output is correct
31	Correct	4 ms	5724 KB	Output is correct
32	Correct	4 ms	5724 KB	Output is correct
33	Correct	4 ms	5724 KB	Output is correct
34	Correct	110 ms	37892 KB	Output is correct
35	Correct	78 ms	41064 KB	Output is correct
36	Correct	76 ms	41136 KB	Output is correct
37	Correct	122 ms	40788 KB	Output is correct
38	Correct	128 ms	37968 KB	Output is correct
39	Correct	119 ms	40016 KB	Output is correct
40	Correct	113 ms	39508 KB	Output is correct
41	Correct	2 ms	4956 KB	Output is correct
42	Correct	2 ms	5212 KB	Output is correct
43	Correct	94 ms	34392 KB	Output is correct
44	Correct	102 ms	34644 KB	Output is correct
45	Correct	111 ms	34640 KB	Output is correct
46	Correct	91 ms	39248 KB	Output is correct
47	Correct	91 ms	39248 KB	Output is correct
48	Correct	90 ms	39248 KB	Output is correct
49	Correct	100 ms	39248 KB	Output is correct
50	Correct	118 ms	34644 KB	Output is correct
51	Correct	115 ms	34644 KB	Output is correct
52	Correct	114 ms	34644 KB	Output is correct
53	Correct	112 ms	34644 KB	Output is correct

답안 #1063813

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