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Submission #965080

# Submission time Handle Problem Language Result Execution time Memory
965080 2024-04-18T05:16:16 Z 12345678 Cat Exercise (JOI23_ho_t4) C++17
41 / 100
 49 ms 16972 KB 
#include <bits/stdc++.h>

using namespace std;

#define ll long long

const int nx=2e5+5;

ll n, a[nx], x, y, rt, l[nx], r[nx], dp[nx];
stack<int> s;

void dfs(int u)
{
    if (l[u]) dfs(l[u]), dp[u]=max(dp[u], dp[l[u]]+u-l[u]);
    if (r[u]) dfs(r[u]), dp[u]=max(dp[u], dp[r[u]]+r[u]-u);
    //cout<<"dp "<<u<<' '<<dp[u]<<'\n';
}

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n;
    for (int i=1; i<=n; i++) cin>>a[i];
    for (int i=1; i<n; i++) cin>>x>>y;
    for (int i=1; i<=n; i++)
    {
        while (!s.empty()&&a[s.top()]<a[i])
        {
            l[i]=s.top();
            s.pop();
        }           
        if (!s.empty()) r[s.top()]=i;
        else rt=i;
        s.push(i);
    }
    //for (int i=1; i<=n; i++) cout<<"debug "<<i<<' '<<l[i]<<' '<<r[i]<<'\n';
    dfs(rt);
    cout<<dp[rt];
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 4448 KB Output is correct
13 Correct 2 ms 4440 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 2 ms 4560 KB Output is correct
16 Correct 1 ms 4564 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 4448 KB Output is correct
13 Correct 2 ms 4440 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 2 ms 4560 KB Output is correct
16 Correct 1 ms 4564 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 2 ms 4700 KB Output is correct
19 Correct 2 ms 4700 KB Output is correct
20 Correct 2 ms 4696 KB Output is correct
21 Correct 2 ms 4700 KB Output is correct
22 Correct 2 ms 4700 KB Output is correct
23 Correct 3 ms 4664 KB Output is correct
24 Correct 2 ms 4700 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 4448 KB Output is correct
13 Correct 2 ms 4440 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 2 ms 4560 KB Output is correct
16 Correct 1 ms 4564 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 2 ms 4700 KB Output is correct
19 Correct 2 ms 4700 KB Output is correct
20 Correct 2 ms 4696 KB Output is correct
21 Correct 2 ms 4700 KB Output is correct
22 Correct 2 ms 4700 KB Output is correct
23 Correct 3 ms 4664 KB Output is correct
24 Correct 2 ms 4700 KB Output is correct
25 Correct 1 ms 4440 KB Output is correct
26 Incorrect 2 ms 4700 KB Output isn't correct
27 Halted 0 ms 0 KB -

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 4448 KB Output is correct
13 Correct 2 ms 4440 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 2 ms 4560 KB Output is correct
16 Correct 1 ms 4564 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 2 ms 4700 KB Output is correct
19 Correct 2 ms 4700 KB Output is correct
20 Correct 2 ms 4696 KB Output is correct
21 Correct 2 ms 4700 KB Output is correct
22 Correct 2 ms 4700 KB Output is correct
23 Correct 3 ms 4664 KB Output is correct
24 Correct 2 ms 4700 KB Output is correct
25 Correct 49 ms 16972 KB Output is correct
26 Correct 46 ms 16416 KB Output is correct
27 Correct 49 ms 16336 KB Output is correct
28 Correct 48 ms 10328 KB Output is correct
29 Correct 43 ms 10460 KB Output is correct
30 Correct 46 ms 10324 KB Output is correct
31 Correct 42 ms 10460 KB Output is correct

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Incorrect 1 ms 4444 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 4444 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4440 KB Output is correct
12 Correct 1 ms 4448 KB Output is correct
13 Correct 2 ms 4440 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 2 ms 4560 KB Output is correct
16 Correct 1 ms 4564 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 2 ms 4700 KB Output is correct
19 Correct 2 ms 4700 KB Output is correct
20 Correct 2 ms 4696 KB Output is correct
21 Correct 2 ms 4700 KB Output is correct
22 Correct 2 ms 4700 KB Output is correct
23 Correct 3 ms 4664 KB Output is correct
24 Correct 2 ms 4700 KB Output is correct
25 Correct 1 ms 4440 KB Output is correct
26 Incorrect 2 ms 4700 KB Output isn't correct
27 Halted 0 ms 0 KB -