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Submission #1095378

# Submission time Handle Problem Language Result Execution time Memory
1095378 2024-10-02T02:50:07 Z abcvuitunggio Cat Exercise (JOI23_ho_t4) C++17
54 / 100
 138 ms 61340 KB 
#include <bits/stdc++.h>
using namespace std;
int n,h[200001],p[200001][20],d[200001],pos[200001],l[200001],u,v,mx[200001],res;
vector <int> ke[200001],ke2[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 f(int i){
    return (l[i]==i?i:l[i]=f(l[i]));
}
void unite(int i, int j){
    i=f(i),j=f(j);
    l[i]=j;
    mx[j]=max(mx[i],mx[j]);
}
void dfs2(int u, int val){
    res=max(res,val);
    for (int v:ke2[u])
        dfs2(v,val+dist(u,v));
}
int main(){
    ios_base::sync_with_stdio(NULL);cin.tie(nullptr);
    cin >> n;
    for (int i=1;i<=n;i++){
        cin >> h[i];
        pos[h[i]]=i;
        l[i]=i;
        mx[i]=h[i];
    }
    for (int i=1;i<n;i++){
        cin >> u >> v;
        ke[u].push_back(v);
        ke[v].push_back(u);
    }
    dfs(pos[n],0);
    for (int i=1;i<=n;i++){
        int u=pos[i];
        for (int j:ke[u])
            if (h[j]<h[u]){
                int v=pos[mx[f(j)]];
                ke2[u].push_back(v);
                unite(u,j);
            }
    }
    dfs2(pos[n],0);
    cout << res;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9652 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 4 ms 9748 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 9820 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 5 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9652 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 4 ms 9748 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 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 5 ms 9816 KB Output is correct
12 Correct 4 ms 9820 KB Output is correct
13 Correct 4 ms 9960 KB Output is correct
14 Correct 6 ms 9756 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 5 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9652 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 4 ms 9748 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 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 5 ms 9816 KB Output is correct
12 Correct 4 ms 9820 KB Output is correct
13 Correct 4 ms 9960 KB Output is correct
14 Correct 6 ms 9756 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 6 ms 11096 KB Output is correct
19 Correct 6 ms 10892 KB Output is correct
20 Correct 6 ms 11160 KB Output is correct
21 Correct 6 ms 10844 KB Output is correct
22 Correct 6 ms 10896 KB Output is correct
23 Correct 6 ms 10844 KB Output is correct
24 Correct 6 ms 10844 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9652 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 4 ms 9748 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 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 5 ms 9816 KB Output is correct
12 Correct 4 ms 9820 KB Output is correct
13 Correct 4 ms 9960 KB Output is correct
14 Correct 6 ms 9756 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 6 ms 11096 KB Output is correct
19 Correct 6 ms 10892 KB Output is correct
20 Correct 6 ms 11160 KB Output is correct
21 Correct 6 ms 10844 KB Output is correct
22 Correct 6 ms 10896 KB Output is correct
23 Correct 6 ms 10844 KB Output is correct
24 Correct 6 ms 10844 KB Output is correct
25 Correct 4 ms 9816 KB Output is correct
26 Correct 7 ms 10844 KB Output is correct
27 Correct 7 ms 11092 KB Output is correct
28 Correct 7 ms 10844 KB Output is correct
29 Correct 8 ms 10844 KB Output is correct
30 Correct 7 ms 10600 KB Output is correct
31 Correct 7 ms 10688 KB Output is correct
32 Correct 6 ms 10532 KB Output is correct
33 Correct 7 ms 10588 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9652 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 4 ms 9748 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 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 5 ms 9816 KB Output is correct
12 Correct 4 ms 9820 KB Output is correct
13 Correct 4 ms 9960 KB Output is correct
14 Correct 6 ms 9756 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 6 ms 11096 KB Output is correct
19 Correct 6 ms 10892 KB Output is correct
20 Correct 6 ms 11160 KB Output is correct
21 Correct 6 ms 10844 KB Output is correct
22 Correct 6 ms 10896 KB Output is correct
23 Correct 6 ms 10844 KB Output is correct
24 Correct 6 ms 10844 KB Output is correct
25 Incorrect 106 ms 61340 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 4 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 134 ms 44372 KB Output is correct
4 Correct 138 ms 44540 KB Output is correct
5 Correct 126 ms 44300 KB Output is correct

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9816 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 4 ms 9652 KB Output is correct
4 Correct 4 ms 9820 KB Output is correct
5 Correct 5 ms 9820 KB Output is correct
6 Correct 4 ms 9748 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 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 5 ms 9816 KB Output is correct
12 Correct 4 ms 9820 KB Output is correct
13 Correct 4 ms 9960 KB Output is correct
14 Correct 6 ms 9756 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 6 ms 11096 KB Output is correct
19 Correct 6 ms 10892 KB Output is correct
20 Correct 6 ms 11160 KB Output is correct
21 Correct 6 ms 10844 KB Output is correct
22 Correct 6 ms 10896 KB Output is correct
23 Correct 6 ms 10844 KB Output is correct
24 Correct 6 ms 10844 KB Output is correct
25 Correct 4 ms 9816 KB Output is correct
26 Correct 7 ms 10844 KB Output is correct
27 Correct 7 ms 11092 KB Output is correct
28 Correct 7 ms 10844 KB Output is correct
29 Correct 8 ms 10844 KB Output is correct
30 Correct 7 ms 10600 KB Output is correct
31 Correct 7 ms 10688 KB Output is correct
32 Correct 6 ms 10532 KB Output is correct
33 Correct 7 ms 10588 KB Output is correct
34 Incorrect 106 ms 61340 KB Output isn't correct
35 Halted 0 ms 0 KB -