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Submission #930463

# Submission time Handle Problem Language Result Execution time Memory
930463 2024-02-20T00:37:23 Z Darren0724 Cat Exercise (JOI23_ho_t4) C++17
54 / 100
 187 ms 39352 KB 
#include <bits/stdc++.h>
using namespace std;
#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;
            dp[i]=max(dp[i],dp[Find(j)]+far(i,Find(j)));
            onion(j,i);
        }
    }
    cout<<dp[v1[n]]<<endl;

    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 25436 KB Output is correct
2 Correct 12 ms 25396 KB Output is correct
3 Correct 11 ms 25436 KB Output is correct
4 Correct 12 ms 25436 KB Output is correct
5 Correct 11 ms 25572 KB Output is correct
6 Correct 12 ms 25452 KB Output is correct
7 Correct 11 ms 25436 KB Output is correct
8 Correct 12 ms 25436 KB Output is correct
9 Correct 11 ms 25432 KB Output is correct
10 Correct 11 ms 25436 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 25436 KB Output is correct
2 Correct 12 ms 25396 KB Output is correct
3 Correct 11 ms 25436 KB Output is correct
4 Correct 12 ms 25436 KB Output is correct
5 Correct 11 ms 25572 KB Output is correct
6 Correct 12 ms 25452 KB Output is correct
7 Correct 11 ms 25436 KB Output is correct
8 Correct 12 ms 25436 KB Output is correct
9 Correct 11 ms 25432 KB Output is correct
10 Correct 11 ms 25436 KB Output is correct
11 Correct 14 ms 25436 KB Output is correct
12 Correct 12 ms 25436 KB Output is correct
13 Correct 12 ms 25432 KB Output is correct
14 Correct 13 ms 25400 KB Output is correct
15 Correct 13 ms 25436 KB Output is correct
16 Correct 12 ms 25436 KB Output is correct
17 Correct 12 ms 25432 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 25436 KB Output is correct
2 Correct 12 ms 25396 KB Output is correct
3 Correct 11 ms 25436 KB Output is correct
4 Correct 12 ms 25436 KB Output is correct
5 Correct 11 ms 25572 KB Output is correct
6 Correct 12 ms 25452 KB Output is correct
7 Correct 11 ms 25436 KB Output is correct
8 Correct 12 ms 25436 KB Output is correct
9 Correct 11 ms 25432 KB Output is correct
10 Correct 11 ms 25436 KB Output is correct
11 Correct 14 ms 25436 KB Output is correct
12 Correct 12 ms 25436 KB Output is correct
13 Correct 12 ms 25432 KB Output is correct
14 Correct 13 ms 25400 KB Output is correct
15 Correct 13 ms 25436 KB Output is correct
16 Correct 12 ms 25436 KB Output is correct
17 Correct 12 ms 25432 KB Output is correct
18 Correct 15 ms 25436 KB Output is correct
19 Correct 15 ms 25436 KB Output is correct
20 Correct 15 ms 25684 KB Output is correct
21 Correct 16 ms 25432 KB Output is correct
22 Correct 15 ms 25436 KB Output is correct
23 Correct 15 ms 25516 KB Output is correct
24 Correct 15 ms 25436 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 25436 KB Output is correct
2 Correct 12 ms 25396 KB Output is correct
3 Correct 11 ms 25436 KB Output is correct
4 Correct 12 ms 25436 KB Output is correct
5 Correct 11 ms 25572 KB Output is correct
6 Correct 12 ms 25452 KB Output is correct
7 Correct 11 ms 25436 KB Output is correct
8 Correct 12 ms 25436 KB Output is correct
9 Correct 11 ms 25432 KB Output is correct
10 Correct 11 ms 25436 KB Output is correct
11 Correct 14 ms 25436 KB Output is correct
12 Correct 12 ms 25436 KB Output is correct
13 Correct 12 ms 25432 KB Output is correct
14 Correct 13 ms 25400 KB Output is correct
15 Correct 13 ms 25436 KB Output is correct
16 Correct 12 ms 25436 KB Output is correct
17 Correct 12 ms 25432 KB Output is correct
18 Correct 15 ms 25436 KB Output is correct
19 Correct 15 ms 25436 KB Output is correct
20 Correct 15 ms 25684 KB Output is correct
21 Correct 16 ms 25432 KB Output is correct
22 Correct 15 ms 25436 KB Output is correct
23 Correct 15 ms 25516 KB Output is correct
24 Correct 15 ms 25436 KB Output is correct
25 Correct 12 ms 25436 KB Output is correct
26 Correct 15 ms 25436 KB Output is correct
27 Correct 15 ms 25436 KB Output is correct
28 Correct 15 ms 25436 KB Output is correct
29 Correct 16 ms 25456 KB Output is correct
30 Correct 15 ms 25436 KB Output is correct
31 Correct 15 ms 25552 KB Output is correct
32 Correct 15 ms 25556 KB Output is correct
33 Correct 15 ms 25396 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 25436 KB Output is correct
2 Correct 12 ms 25396 KB Output is correct
3 Correct 11 ms 25436 KB Output is correct
4 Correct 12 ms 25436 KB Output is correct
5 Correct 11 ms 25572 KB Output is correct
6 Correct 12 ms 25452 KB Output is correct
7 Correct 11 ms 25436 KB Output is correct
8 Correct 12 ms 25436 KB Output is correct
9 Correct 11 ms 25432 KB Output is correct
10 Correct 11 ms 25436 KB Output is correct
11 Correct 14 ms 25436 KB Output is correct
12 Correct 12 ms 25436 KB Output is correct
13 Correct 12 ms 25432 KB Output is correct
14 Correct 13 ms 25400 KB Output is correct
15 Correct 13 ms 25436 KB Output is correct
16 Correct 12 ms 25436 KB Output is correct
17 Correct 12 ms 25432 KB Output is correct
18 Correct 15 ms 25436 KB Output is correct
19 Correct 15 ms 25436 KB Output is correct
20 Correct 15 ms 25684 KB Output is correct
21 Correct 16 ms 25432 KB Output is correct
22 Correct 15 ms 25436 KB Output is correct
23 Correct 15 ms 25516 KB Output is correct
24 Correct 15 ms 25436 KB Output is correct
25 Incorrect 143 ms 39352 KB Output isn't correct
26 Halted 0 ms 0 KB -

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 25432 KB Output is correct
2 Correct 12 ms 25436 KB Output is correct
3 Correct 187 ms 31020 KB Output is correct
4 Correct 184 ms 31040 KB Output is correct
5 Correct 187 ms 31040 KB Output is correct

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 25436 KB Output is correct
2 Correct 12 ms 25396 KB Output is correct
3 Correct 11 ms 25436 KB Output is correct
4 Correct 12 ms 25436 KB Output is correct
5 Correct 11 ms 25572 KB Output is correct
6 Correct 12 ms 25452 KB Output is correct
7 Correct 11 ms 25436 KB Output is correct
8 Correct 12 ms 25436 KB Output is correct
9 Correct 11 ms 25432 KB Output is correct
10 Correct 11 ms 25436 KB Output is correct
11 Correct 14 ms 25436 KB Output is correct
12 Correct 12 ms 25436 KB Output is correct
13 Correct 12 ms 25432 KB Output is correct
14 Correct 13 ms 25400 KB Output is correct
15 Correct 13 ms 25436 KB Output is correct
16 Correct 12 ms 25436 KB Output is correct
17 Correct 12 ms 25432 KB Output is correct
18 Correct 15 ms 25436 KB Output is correct
19 Correct 15 ms 25436 KB Output is correct
20 Correct 15 ms 25684 KB Output is correct
21 Correct 16 ms 25432 KB Output is correct
22 Correct 15 ms 25436 KB Output is correct
23 Correct 15 ms 25516 KB Output is correct
24 Correct 15 ms 25436 KB Output is correct
25 Correct 12 ms 25436 KB Output is correct
26 Correct 15 ms 25436 KB Output is correct
27 Correct 15 ms 25436 KB Output is correct
28 Correct 15 ms 25436 KB Output is correct
29 Correct 16 ms 25456 KB Output is correct
30 Correct 15 ms 25436 KB Output is correct
31 Correct 15 ms 25552 KB Output is correct
32 Correct 15 ms 25556 KB Output is correct
33 Correct 15 ms 25396 KB Output is correct
34 Incorrect 143 ms 39352 KB Output isn't correct
35 Halted 0 ms 0 KB -