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Submission #929149

# Submission time Handle Problem Language Result Execution time Memory
929149 2024-02-17T18:42:57 Z imarn Cat Exercise (JOI23_ho_t4) C++14
100 / 100
 236 ms 44628 KB 
#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
#define vi vector<int>
#define vvi vector<vi>
#define vp vector<pii>
using namespace std;
const int N=2e5+5;
vector<int>g[N];
int pr[N],up[N][21],dep[N],h[N];
ll dp[N]{0};
int get(int r){
    return pr[r]==r?r:pr[r]=get(pr[r]);
}
void dfs(int u,int p,int l){
    up[u][0]=p;dep[u]=l;
    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;
        dfs(v,u,l+1);
    }
}
int qr(int a,int b){
    if(dep[a]>dep[b])swap(a,b);
    for(int i=20;i>=0;i--)if(dep[up[b][i]]>=dep[a])b=up[b][i];
    if(a==b)return a;
    for(int i=20;i>=0;i--)if(up[a][i]!=up[b][i])a=up[a][i],b=up[b][i];
    return up[a][0];
}
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n;cin>>n;
    for(int i=1;i<=n;i++)cin>>h[i];
    for(int i=1,u,v;i<=n-1;i++){
        cin>>u>>v;g[h[u]].pb(h[v]);g[h[v]].pb(h[u]);
    }iota(pr,pr+n+1,0);dfs(1,1,0);
    for(int i=2;i<=n;i++){
        for(auto v:g[i]){
            int p=get(v);
            if(p<i)dp[i]=max(dp[i],dp[p]+dep[p]+dep[i]-2*dep[qr(i,p)]),pr[p]=i;
        }
    }cout<<dp[n];
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Correct 2 ms 11100 KB Output is correct
5 Correct 2 ms 10840 KB Output is correct
6 Correct 2 ms 10964 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10840 KB Output is correct
10 Correct 2 ms 11096 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Correct 2 ms 11100 KB Output is correct
5 Correct 2 ms 10840 KB Output is correct
6 Correct 2 ms 10964 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10840 KB Output is correct
10 Correct 2 ms 11096 KB Output is correct
11 Correct 2 ms 10844 KB Output is correct
12 Correct 2 ms 10960 KB Output is correct
13 Correct 2 ms 10844 KB Output is correct
14 Correct 3 ms 11100 KB Output is correct
15 Correct 2 ms 10844 KB Output is correct
16 Correct 2 ms 10844 KB Output is correct
17 Correct 2 ms 10844 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Correct 2 ms 11100 KB Output is correct
5 Correct 2 ms 10840 KB Output is correct
6 Correct 2 ms 10964 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10840 KB Output is correct
10 Correct 2 ms 11096 KB Output is correct
11 Correct 2 ms 10844 KB Output is correct
12 Correct 2 ms 10960 KB Output is correct
13 Correct 2 ms 10844 KB Output is correct
14 Correct 3 ms 11100 KB Output is correct
15 Correct 2 ms 10844 KB Output is correct
16 Correct 2 ms 10844 KB Output is correct
17 Correct 2 ms 10844 KB Output is correct
18 Correct 5 ms 11292 KB Output is correct
19 Correct 5 ms 11356 KB Output is correct
20 Correct 4 ms 11356 KB Output is correct
21 Correct 5 ms 11356 KB Output is correct
22 Correct 4 ms 11356 KB Output is correct
23 Correct 4 ms 11356 KB Output is correct
24 Correct 4 ms 11356 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Correct 2 ms 11100 KB Output is correct
5 Correct 2 ms 10840 KB Output is correct
6 Correct 2 ms 10964 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10840 KB Output is correct
10 Correct 2 ms 11096 KB Output is correct
11 Correct 2 ms 10844 KB Output is correct
12 Correct 2 ms 10960 KB Output is correct
13 Correct 2 ms 10844 KB Output is correct
14 Correct 3 ms 11100 KB Output is correct
15 Correct 2 ms 10844 KB Output is correct
16 Correct 2 ms 10844 KB Output is correct
17 Correct 2 ms 10844 KB Output is correct
18 Correct 5 ms 11292 KB Output is correct
19 Correct 5 ms 11356 KB Output is correct
20 Correct 4 ms 11356 KB Output is correct
21 Correct 5 ms 11356 KB Output is correct
22 Correct 4 ms 11356 KB Output is correct
23 Correct 4 ms 11356 KB Output is correct
24 Correct 4 ms 11356 KB Output is correct
25 Correct 2 ms 10844 KB Output is correct
26 Correct 4 ms 11180 KB Output is correct
27 Correct 5 ms 11328 KB Output is correct
28 Correct 4 ms 11356 KB Output is correct
29 Correct 4 ms 11356 KB Output is correct
30 Correct 4 ms 11096 KB Output is correct
31 Correct 5 ms 11228 KB Output is correct
32 Correct 5 ms 11100 KB Output is correct
33 Correct 4 ms 11352 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Correct 2 ms 11100 KB Output is correct
5 Correct 2 ms 10840 KB Output is correct
6 Correct 2 ms 10964 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10840 KB Output is correct
10 Correct 2 ms 11096 KB Output is correct
11 Correct 2 ms 10844 KB Output is correct
12 Correct 2 ms 10960 KB Output is correct
13 Correct 2 ms 10844 KB Output is correct
14 Correct 3 ms 11100 KB Output is correct
15 Correct 2 ms 10844 KB Output is correct
16 Correct 2 ms 10844 KB Output is correct
17 Correct 2 ms 10844 KB Output is correct
18 Correct 5 ms 11292 KB Output is correct
19 Correct 5 ms 11356 KB Output is correct
20 Correct 4 ms 11356 KB Output is correct
21 Correct 5 ms 11356 KB Output is correct
22 Correct 4 ms 11356 KB Output is correct
23 Correct 4 ms 11356 KB Output is correct
24 Correct 4 ms 11356 KB Output is correct
25 Correct 121 ms 40016 KB Output is correct
26 Correct 120 ms 44628 KB Output is correct
27 Correct 105 ms 44600 KB Output is correct
28 Correct 182 ms 44396 KB Output is correct
29 Correct 177 ms 40272 KB Output is correct
30 Correct 196 ms 43220 KB Output is correct
31 Correct 193 ms 42504 KB Output is correct

Subtask #6
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 158 ms 35380 KB Output is correct
4 Correct 159 ms 35408 KB Output is correct
5 Correct 177 ms 35408 KB Output is correct

Subtask #7
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 2 ms 10844 KB Output is correct
4 Correct 2 ms 11100 KB Output is correct
5 Correct 2 ms 10840 KB Output is correct
6 Correct 2 ms 10964 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10840 KB Output is correct
10 Correct 2 ms 11096 KB Output is correct
11 Correct 2 ms 10844 KB Output is correct
12 Correct 2 ms 10960 KB Output is correct
13 Correct 2 ms 10844 KB Output is correct
14 Correct 3 ms 11100 KB Output is correct
15 Correct 2 ms 10844 KB Output is correct
16 Correct 2 ms 10844 KB Output is correct
17 Correct 2 ms 10844 KB Output is correct
18 Correct 5 ms 11292 KB Output is correct
19 Correct 5 ms 11356 KB Output is correct
20 Correct 4 ms 11356 KB Output is correct
21 Correct 5 ms 11356 KB Output is correct
22 Correct 4 ms 11356 KB Output is correct
23 Correct 4 ms 11356 KB Output is correct
24 Correct 4 ms 11356 KB Output is correct
25 Correct 2 ms 10844 KB Output is correct
26 Correct 4 ms 11180 KB Output is correct
27 Correct 5 ms 11328 KB Output is correct
28 Correct 4 ms 11356 KB Output is correct
29 Correct 4 ms 11356 KB Output is correct
30 Correct 4 ms 11096 KB Output is correct
31 Correct 5 ms 11228 KB Output is correct
32 Correct 5 ms 11100 KB Output is correct
33 Correct 4 ms 11352 KB Output is correct
34 Correct 121 ms 40016 KB Output is correct
35 Correct 120 ms 44628 KB Output is correct
36 Correct 105 ms 44600 KB Output is correct
37 Correct 182 ms 44396 KB Output is correct
38 Correct 177 ms 40272 KB Output is correct
39 Correct 196 ms 43220 KB Output is correct
40 Correct 193 ms 42504 KB Output is correct
41 Correct 2 ms 10844 KB Output is correct
42 Correct 2 ms 10844 KB Output is correct
43 Correct 158 ms 35380 KB Output is correct
44 Correct 159 ms 35408 KB Output is correct
45 Correct 177 ms 35408 KB Output is correct
46 Correct 142 ms 41960 KB Output is correct
47 Correct 128 ms 42108 KB Output is correct
48 Correct 127 ms 42064 KB Output is correct
49 Correct 131 ms 42064 KB Output is correct
50 Correct 210 ms 35460 KB Output is correct
51 Correct 180 ms 35428 KB Output is correct
52 Correct 185 ms 35632 KB Output is correct
53 Correct 236 ms 35412 KB Output is correct