oj.uz

Submission #930466

# Submission time Handle Problem Language Result Execution time Memory
930466 2024-02-20T00:42:54 Z Darren0724 Cat Exercise (JOI23_ho_t4) C++17
100 / 100
 302 ms 49620 KB 
#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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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