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Submission #731597

# Submission time Handle Problem Language Result Execution time Memory
731597 2023-04-27T15:28:16 Z adrilen Cat in a tree (BOI17_catinatree) C++17
100 / 100
 61 ms 19112 KB 
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
typedef pair<int, int> pii;
constexpr int maxn = 2e5;

basic_string <int> children[maxn];
int d;



pii dfs(int p)
{
    vector <pii> childs;

    if (children[p].size() == 0)
    {
        return pii(1, 1); // Dist, num
    }

    for (int i : children[p])
    {
        childs.emplace_back(dfs(i));
    }
    childs.emplace_back(0, 1);

    sort(childs.begin(), childs.end());

    pii out = pii(d + 1, 0);

    pii pot;
    while (!childs.empty())
    {
        pot = childs.back();
        childs.pop_back();

        if (pot.first + out.first >= d)
        {
            out.second += pot.second;
            out.first = pot.first;
        } else break;
    }

    out.second += pot.second - 1;

    while (!childs.empty())
    {
        pot = childs.back();
        childs.pop_back();

        out.second += pot.second - 1;
    }

    out.first ++;
    return out;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    
    int n;
    cin >> n >> d;

    int a;
    for (int i = 1; i < n; i++)
    {
        cin >> a;
        children[a].push_back(i);
    }
    
    int root = 0;

    pii output = dfs(root);
    cout << output.second << "\n";
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6484 KB Output is correct
2 Correct 4 ms 6484 KB Output is correct
3 Correct 3 ms 6564 KB Output is correct
4 Correct 3 ms 6492 KB Output is correct
5 Correct 5 ms 6484 KB Output is correct
6 Correct 3 ms 6484 KB Output is correct
7 Correct 4 ms 6484 KB Output is correct
8 Correct 4 ms 6484 KB Output is correct
9 Correct 4 ms 6460 KB Output is correct
10 Correct 3 ms 6484 KB Output is correct
11 Correct 3 ms 6484 KB Output is correct
12 Correct 4 ms 6484 KB Output is correct
13 Correct 4 ms 6484 KB Output is correct
14 Correct 5 ms 6576 KB Output is correct
15 Correct 5 ms 6484 KB Output is correct
16 Correct 4 ms 6484 KB Output is correct
17 Correct 4 ms 6484 KB Output is correct
18 Correct 4 ms 6484 KB Output is correct
19 Correct 4 ms 6484 KB Output is correct
20 Correct 4 ms 6484 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6484 KB Output is correct
2 Correct 4 ms 6484 KB Output is correct
3 Correct 3 ms 6564 KB Output is correct
4 Correct 3 ms 6492 KB Output is correct
5 Correct 5 ms 6484 KB Output is correct
6 Correct 3 ms 6484 KB Output is correct
7 Correct 4 ms 6484 KB Output is correct
8 Correct 4 ms 6484 KB Output is correct
9 Correct 4 ms 6460 KB Output is correct
10 Correct 3 ms 6484 KB Output is correct
11 Correct 3 ms 6484 KB Output is correct
12 Correct 4 ms 6484 KB Output is correct
13 Correct 4 ms 6484 KB Output is correct
14 Correct 5 ms 6576 KB Output is correct
15 Correct 5 ms 6484 KB Output is correct
16 Correct 4 ms 6484 KB Output is correct
17 Correct 4 ms 6484 KB Output is correct
18 Correct 4 ms 6484 KB Output is correct
19 Correct 4 ms 6484 KB Output is correct
20 Correct 4 ms 6484 KB Output is correct
21 Correct 4 ms 6740 KB Output is correct
22 Correct 5 ms 6484 KB Output is correct
23 Correct 5 ms 6484 KB Output is correct
24 Correct 3 ms 6484 KB Output is correct
25 Correct 4 ms 6484 KB Output is correct
26 Correct 5 ms 6484 KB Output is correct
27 Correct 4 ms 6484 KB Output is correct
28 Correct 5 ms 6584 KB Output is correct
29 Correct 4 ms 6484 KB Output is correct
30 Correct 4 ms 6484 KB Output is correct
31 Correct 4 ms 6584 KB Output is correct
32 Correct 4 ms 6484 KB Output is correct
33 Correct 4 ms 6584 KB Output is correct
34 Correct 4 ms 6484 KB Output is correct
35 Correct 4 ms 6476 KB Output is correct
36 Correct 4 ms 6584 KB Output is correct
37 Correct 5 ms 6612 KB Output is correct
38 Correct 4 ms 6584 KB Output is correct
39 Correct 4 ms 6612 KB Output is correct
40 Correct 4 ms 6716 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6484 KB Output is correct
2 Correct 4 ms 6484 KB Output is correct
3 Correct 3 ms 6564 KB Output is correct
4 Correct 3 ms 6492 KB Output is correct
5 Correct 5 ms 6484 KB Output is correct
6 Correct 3 ms 6484 KB Output is correct
7 Correct 4 ms 6484 KB Output is correct
8 Correct 4 ms 6484 KB Output is correct
9 Correct 4 ms 6460 KB Output is correct
10 Correct 3 ms 6484 KB Output is correct
11 Correct 3 ms 6484 KB Output is correct
12 Correct 4 ms 6484 KB Output is correct
13 Correct 4 ms 6484 KB Output is correct
14 Correct 5 ms 6576 KB Output is correct
15 Correct 5 ms 6484 KB Output is correct
16 Correct 4 ms 6484 KB Output is correct
17 Correct 4 ms 6484 KB Output is correct
18 Correct 4 ms 6484 KB Output is correct
19 Correct 4 ms 6484 KB Output is correct
20 Correct 4 ms 6484 KB Output is correct
21 Correct 4 ms 6740 KB Output is correct
22 Correct 5 ms 6484 KB Output is correct
23 Correct 5 ms 6484 KB Output is correct
24 Correct 3 ms 6484 KB Output is correct
25 Correct 4 ms 6484 KB Output is correct
26 Correct 5 ms 6484 KB Output is correct
27 Correct 4 ms 6484 KB Output is correct
28 Correct 5 ms 6584 KB Output is correct
29 Correct 4 ms 6484 KB Output is correct
30 Correct 4 ms 6484 KB Output is correct
31 Correct 4 ms 6584 KB Output is correct
32 Correct 4 ms 6484 KB Output is correct
33 Correct 4 ms 6584 KB Output is correct
34 Correct 4 ms 6484 KB Output is correct
35 Correct 4 ms 6476 KB Output is correct
36 Correct 4 ms 6584 KB Output is correct
37 Correct 5 ms 6612 KB Output is correct
38 Correct 4 ms 6584 KB Output is correct
39 Correct 4 ms 6612 KB Output is correct
40 Correct 4 ms 6716 KB Output is correct
41 Correct 36 ms 8412 KB Output is correct
42 Correct 30 ms 7344 KB Output is correct
43 Correct 33 ms 7372 KB Output is correct
44 Correct 26 ms 7352 KB Output is correct
45 Correct 27 ms 7380 KB Output is correct
46 Correct 61 ms 8240 KB Output is correct
47 Correct 59 ms 8236 KB Output is correct
48 Correct 54 ms 8240 KB Output is correct
49 Correct 54 ms 8280 KB Output is correct
50 Correct 15 ms 7716 KB Output is correct
51 Correct 18 ms 7620 KB Output is correct
52 Correct 15 ms 7636 KB Output is correct
53 Correct 30 ms 8768 KB Output is correct
54 Correct 31 ms 8812 KB Output is correct
55 Correct 25 ms 8796 KB Output is correct
56 Correct 4 ms 6592 KB Output is correct
57 Correct 8 ms 8876 KB Output is correct
58 Correct 26 ms 16912 KB Output is correct
59 Correct 47 ms 19112 KB Output is correct
60 Correct 37 ms 8336 KB Output is correct
61 Correct 50 ms 7716 KB Output is correct