oj.uz

Submission #930462

# Submission time Handle Problem Language Result Execution time Memory
930462 2024-02-20T00:35:07 Z Darren0724 Cat Exercise (JOI23_ho_t4) C++17
54 / 100
 185 ms 41464 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;
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(18,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<18;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=17;i>=0;i--){
            if(d&(1<<i)){
                a=jump[i][a];
            }
        }
        if(a==b)return a;
        for(int i=17;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 11 ms 23896 KB Output is correct
2 Correct 14 ms 23900 KB Output is correct
3 Correct 11 ms 23896 KB Output is correct
4 Correct 12 ms 23900 KB Output is correct
5 Correct 11 ms 23788 KB Output is correct
6 Correct 11 ms 23900 KB Output is correct
7 Correct 11 ms 23900 KB Output is correct
8 Correct 12 ms 23884 KB Output is correct
9 Correct 11 ms 23900 KB Output is correct
10 Correct 11 ms 23900 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23896 KB Output is correct
2 Correct 14 ms 23900 KB Output is correct
3 Correct 11 ms 23896 KB Output is correct
4 Correct 12 ms 23900 KB Output is correct
5 Correct 11 ms 23788 KB Output is correct
6 Correct 11 ms 23900 KB Output is correct
7 Correct 11 ms 23900 KB Output is correct
8 Correct 12 ms 23884 KB Output is correct
9 Correct 11 ms 23900 KB Output is correct
10 Correct 11 ms 23900 KB Output is correct
11 Correct 11 ms 23896 KB Output is correct
12 Correct 11 ms 23896 KB Output is correct
13 Correct 11 ms 23900 KB Output is correct
14 Correct 11 ms 23900 KB Output is correct
15 Correct 11 ms 23820 KB Output is correct
16 Correct 11 ms 23896 KB Output is correct
17 Correct 11 ms 23900 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23896 KB Output is correct
2 Correct 14 ms 23900 KB Output is correct
3 Correct 11 ms 23896 KB Output is correct
4 Correct 12 ms 23900 KB Output is correct
5 Correct 11 ms 23788 KB Output is correct
6 Correct 11 ms 23900 KB Output is correct
7 Correct 11 ms 23900 KB Output is correct
8 Correct 12 ms 23884 KB Output is correct
9 Correct 11 ms 23900 KB Output is correct
10 Correct 11 ms 23900 KB Output is correct
11 Correct 11 ms 23896 KB Output is correct
12 Correct 11 ms 23896 KB Output is correct
13 Correct 11 ms 23900 KB Output is correct
14 Correct 11 ms 23900 KB Output is correct
15 Correct 11 ms 23820 KB Output is correct
16 Correct 11 ms 23896 KB Output is correct
17 Correct 11 ms 23900 KB Output is correct
18 Correct 14 ms 24020 KB Output is correct
19 Correct 14 ms 23900 KB Output is correct
20 Correct 14 ms 23900 KB Output is correct
21 Correct 14 ms 23900 KB Output is correct
22 Correct 14 ms 23896 KB Output is correct
23 Correct 14 ms 23900 KB Output is correct
24 Correct 14 ms 24012 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23896 KB Output is correct
2 Correct 14 ms 23900 KB Output is correct
3 Correct 11 ms 23896 KB Output is correct
4 Correct 12 ms 23900 KB Output is correct
5 Correct 11 ms 23788 KB Output is correct
6 Correct 11 ms 23900 KB Output is correct
7 Correct 11 ms 23900 KB Output is correct
8 Correct 12 ms 23884 KB Output is correct
9 Correct 11 ms 23900 KB Output is correct
10 Correct 11 ms 23900 KB Output is correct
11 Correct 11 ms 23896 KB Output is correct
12 Correct 11 ms 23896 KB Output is correct
13 Correct 11 ms 23900 KB Output is correct
14 Correct 11 ms 23900 KB Output is correct
15 Correct 11 ms 23820 KB Output is correct
16 Correct 11 ms 23896 KB Output is correct
17 Correct 11 ms 23900 KB Output is correct
18 Correct 14 ms 24020 KB Output is correct
19 Correct 14 ms 23900 KB Output is correct
20 Correct 14 ms 23900 KB Output is correct
21 Correct 14 ms 23900 KB Output is correct
22 Correct 14 ms 23896 KB Output is correct
23 Correct 14 ms 23900 KB Output is correct
24 Correct 14 ms 24012 KB Output is correct
25 Correct 11 ms 23896 KB Output is correct
26 Correct 15 ms 24308 KB Output is correct
27 Correct 14 ms 23904 KB Output is correct
28 Correct 14 ms 23900 KB Output is correct
29 Correct 14 ms 23840 KB Output is correct
30 Correct 14 ms 23900 KB Output is correct
31 Correct 14 ms 23900 KB Output is correct
32 Correct 14 ms 23900 KB Output is correct
33 Correct 14 ms 23900 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23896 KB Output is correct
2 Correct 14 ms 23900 KB Output is correct
3 Correct 11 ms 23896 KB Output is correct
4 Correct 12 ms 23900 KB Output is correct
5 Correct 11 ms 23788 KB Output is correct
6 Correct 11 ms 23900 KB Output is correct
7 Correct 11 ms 23900 KB Output is correct
8 Correct 12 ms 23884 KB Output is correct
9 Correct 11 ms 23900 KB Output is correct
10 Correct 11 ms 23900 KB Output is correct
11 Correct 11 ms 23896 KB Output is correct
12 Correct 11 ms 23896 KB Output is correct
13 Correct 11 ms 23900 KB Output is correct
14 Correct 11 ms 23900 KB Output is correct
15 Correct 11 ms 23820 KB Output is correct
16 Correct 11 ms 23896 KB Output is correct
17 Correct 11 ms 23900 KB Output is correct
18 Correct 14 ms 24020 KB Output is correct
19 Correct 14 ms 23900 KB Output is correct
20 Correct 14 ms 23900 KB Output is correct
21 Correct 14 ms 23900 KB Output is correct
22 Correct 14 ms 23896 KB Output is correct
23 Correct 14 ms 23900 KB Output is correct
24 Correct 14 ms 24012 KB Output is correct
25 Incorrect 133 ms 41464 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 23896 KB Output is correct
2 Correct 11 ms 23900 KB Output is correct
3 Correct 174 ms 33136 KB Output is correct
4 Correct 185 ms 33064 KB Output is correct
5 Correct 174 ms 33088 KB Output is correct

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23896 KB Output is correct
2 Correct 14 ms 23900 KB Output is correct
3 Correct 11 ms 23896 KB Output is correct
4 Correct 12 ms 23900 KB Output is correct
5 Correct 11 ms 23788 KB Output is correct
6 Correct 11 ms 23900 KB Output is correct
7 Correct 11 ms 23900 KB Output is correct
8 Correct 12 ms 23884 KB Output is correct
9 Correct 11 ms 23900 KB Output is correct
10 Correct 11 ms 23900 KB Output is correct
11 Correct 11 ms 23896 KB Output is correct
12 Correct 11 ms 23896 KB Output is correct
13 Correct 11 ms 23900 KB Output is correct
14 Correct 11 ms 23900 KB Output is correct
15 Correct 11 ms 23820 KB Output is correct
16 Correct 11 ms 23896 KB Output is correct
17 Correct 11 ms 23900 KB Output is correct
18 Correct 14 ms 24020 KB Output is correct
19 Correct 14 ms 23900 KB Output is correct
20 Correct 14 ms 23900 KB Output is correct
21 Correct 14 ms 23900 KB Output is correct
22 Correct 14 ms 23896 KB Output is correct
23 Correct 14 ms 23900 KB Output is correct
24 Correct 14 ms 24012 KB Output is correct
25 Correct 11 ms 23896 KB Output is correct
26 Correct 15 ms 24308 KB Output is correct
27 Correct 14 ms 23904 KB Output is correct
28 Correct 14 ms 23900 KB Output is correct
29 Correct 14 ms 23840 KB Output is correct
30 Correct 14 ms 23900 KB Output is correct
31 Correct 14 ms 23900 KB Output is correct
32 Correct 14 ms 23900 KB Output is correct
33 Correct 14 ms 23900 KB Output is correct
34 Incorrect 133 ms 41464 KB Output isn't correct
35 Halted 0 ms 0 KB -