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Submission #1095375

# Submission time Handle Problem Language Result Execution time Memory
1095375 2024-10-02T02:44:54 Z abcvuitunggio Cat Exercise (JOI23_ho_t4) C++17
31 / 100
 2000 ms 65084 KB 
#include <bits/stdc++.h>
using namespace std;
int n,h[200001],p[200001][20],d[200001],u,v,mx,r;
set <int> ke[200001];
void dfs(int u, int par){
    for (int v:ke[u])
        if (v!=par){
            p[v][0]=u;
            for (int i=1;i<20;i++)
                p[v][i]=p[p[v][i-1]][i-1];
            d[v]=d[u]+1;
            dfs(v,u);
        }
}
int lca(int u, int v){
    if (d[u]<d[v])
        swap(u,v);
    for (int i=19;i>=0;i--)
        if (d[p[u][i]]>=d[v])
            u=p[u][i];
    if (u==v)
        return u;
    for (int i=19;i>=0;i--)
        if (p[u][i]!=p[v][i]){
            u=p[u][i];
            v=p[v][i];
        }
    return p[u][0];
}
int dist(int u, int v){
    return d[u]+d[v]-d[lca(u,v)]*2;
}
int dfs3(int u, int par){
    int res=u;
    for (int v:ke[u])
        if (v!=par){
            int w=dfs3(v,u);
            res=(h[res]>h[w]?res:w);
        }
    return res;
}
void dfs2(int u, int val){
    mx=max(mx,val);
    for (int v:ke[u]){
        ke[v].erase(u);
        int w=dfs3(v,v);
        dfs2(w,val+dist(u,w));
    }
}
int main(){
    ios_base::sync_with_stdio(NULL);cin.tie(nullptr);
    cin >> n;
    for (int i=1;i<=n;i++){
        cin >> h[i];
        if (h[i]==n)
            r=i;
    }
    for (int i=1;i<n;i++){
        cin >> u >> v;
        ke[u].insert(v);
        ke[v].insert(u);
    }
    dfs(r,r);
    dfs2(r,0);
    cout << mx;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9800 KB Output is correct
3 Correct 4 ms 9868 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 3 ms 9768 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 4 ms 9860 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9800 KB Output is correct
3 Correct 4 ms 9868 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 3 ms 9768 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 4 ms 9860 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 5 ms 9960 KB Output is correct
12 Correct 5 ms 9816 KB Output is correct
13 Correct 5 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9800 KB Output is correct
3 Correct 4 ms 9868 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 3 ms 9768 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 4 ms 9860 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 5 ms 9960 KB Output is correct
12 Correct 5 ms 9816 KB Output is correct
13 Correct 5 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 169 ms 11212 KB Output is correct
19 Correct 175 ms 11204 KB Output is correct
20 Correct 170 ms 11204 KB Output is correct
21 Correct 7 ms 11096 KB Output is correct
22 Correct 7 ms 11072 KB Output is correct
23 Correct 7 ms 10844 KB Output is correct
24 Correct 8 ms 11048 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9800 KB Output is correct
3 Correct 4 ms 9868 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 3 ms 9768 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 4 ms 9860 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 5 ms 9960 KB Output is correct
12 Correct 5 ms 9816 KB Output is correct
13 Correct 5 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 169 ms 11212 KB Output is correct
19 Correct 175 ms 11204 KB Output is correct
20 Correct 170 ms 11204 KB Output is correct
21 Correct 7 ms 11096 KB Output is correct
22 Correct 7 ms 11072 KB Output is correct
23 Correct 7 ms 10844 KB Output is correct
24 Correct 8 ms 11048 KB Output is correct
25 Correct 4 ms 9820 KB Output is correct
26 Correct 183 ms 11104 KB Output is correct
27 Correct 186 ms 11096 KB Output is correct
28 Correct 185 ms 11100 KB Output is correct
29 Correct 180 ms 11100 KB Output is correct
30 Correct 12 ms 10844 KB Output is correct
31 Correct 19 ms 10864 KB Output is correct
32 Correct 15 ms 10856 KB Output is correct
33 Correct 18 ms 10840 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9800 KB Output is correct
3 Correct 4 ms 9868 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 3 ms 9768 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 4 ms 9860 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 5 ms 9960 KB Output is correct
12 Correct 5 ms 9816 KB Output is correct
13 Correct 5 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 169 ms 11212 KB Output is correct
19 Correct 175 ms 11204 KB Output is correct
20 Correct 170 ms 11204 KB Output is correct
21 Correct 7 ms 11096 KB Output is correct
22 Correct 7 ms 11072 KB Output is correct
23 Correct 7 ms 10844 KB Output is correct
24 Correct 8 ms 11048 KB Output is correct
25 Execution timed out 2062 ms 65084 KB Time limit exceeded
26 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9836 KB Output is correct
3 Execution timed out 2096 ms 49544 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9816 KB Output is correct
2 Correct 4 ms 9800 KB Output is correct
3 Correct 4 ms 9868 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 3 ms 9768 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 4 ms 9860 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 5 ms 9960 KB Output is correct
12 Correct 5 ms 9816 KB Output is correct
13 Correct 5 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 4 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 169 ms 11212 KB Output is correct
19 Correct 175 ms 11204 KB Output is correct
20 Correct 170 ms 11204 KB Output is correct
21 Correct 7 ms 11096 KB Output is correct
22 Correct 7 ms 11072 KB Output is correct
23 Correct 7 ms 10844 KB Output is correct
24 Correct 8 ms 11048 KB Output is correct
25 Correct 4 ms 9820 KB Output is correct
26 Correct 183 ms 11104 KB Output is correct
27 Correct 186 ms 11096 KB Output is correct
28 Correct 185 ms 11100 KB Output is correct
29 Correct 180 ms 11100 KB Output is correct
30 Correct 12 ms 10844 KB Output is correct
31 Correct 19 ms 10864 KB Output is correct
32 Correct 15 ms 10856 KB Output is correct
33 Correct 18 ms 10840 KB Output is correct
34 Execution timed out 2062 ms 65084 KB Time limit exceeded
35 Halted 0 ms 0 KB -