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Submission #491226

# Submission time Handle Problem Language Result Execution time Memory
491226 2021-11-30T23:55:05 Z Rainbowbunny Cat in a tree (BOI17_catinatree) C++17
100 / 100
 145 ms 18300 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 2e5 + 5;

int n, d;
int H[MAXN], A[MAXN];
vector <int> Adj[MAXN];

void DFS(int node, int p = -1)
{
    for(auto x : Adj[node])
    {
        if(x == p)
        {
            continue;
        }
        H[x] = H[node] + 1;
        DFS(x, node);
    }
}

void Find(int node)
{
    if(A[node] == 1)
    {
        return;
    }
    for(auto x : Adj[node])
    {
        if(A[x] < A[node] - 1)
        {
            A[x] = A[node] - 1;
            Find(x);
        }
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> d;
    for(int i = 1; i < n; i++)
    {
        int p;
        cin >> p;
        Adj[p].push_back(i);
        Adj[i].push_back(p);
    }
    DFS(0);
    vector <int> id;
    for(int i = 0; i < n; i++)
    {
        id.emplace_back(i);
    }
    sort(id.begin(), id.end(), [](int x, int y)
    {
        return H[x] > H[y];
    });
    int ans = 0;
    for(auto x : id)
    {
        if(!A[x])
        {
            A[x] = d;
            ans++;
            Find(x);
        }
    }
    cout << ans << '\n';
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 2 ms 4940 KB Output is correct
6 Correct 2 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 2 ms 4940 KB Output is correct
9 Correct 2 ms 4940 KB Output is correct
10 Correct 2 ms 4940 KB Output is correct
11 Correct 2 ms 4940 KB Output is correct
12 Correct 2 ms 4940 KB Output is correct
13 Correct 2 ms 4940 KB Output is correct
14 Correct 2 ms 4940 KB Output is correct
15 Correct 2 ms 4940 KB Output is correct
16 Correct 3 ms 4940 KB Output is correct
17 Correct 3 ms 5020 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 4 ms 5024 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 2 ms 4940 KB Output is correct
6 Correct 2 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 2 ms 4940 KB Output is correct
9 Correct 2 ms 4940 KB Output is correct
10 Correct 2 ms 4940 KB Output is correct
11 Correct 2 ms 4940 KB Output is correct
12 Correct 2 ms 4940 KB Output is correct
13 Correct 2 ms 4940 KB Output is correct
14 Correct 2 ms 4940 KB Output is correct
15 Correct 2 ms 4940 KB Output is correct
16 Correct 3 ms 4940 KB Output is correct
17 Correct 3 ms 5020 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 4 ms 5024 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 4 ms 5068 KB Output is correct
22 Correct 3 ms 4940 KB Output is correct
23 Correct 3 ms 5020 KB Output is correct
24 Correct 2 ms 4940 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 3 ms 5068 KB Output is correct
27 Correct 3 ms 4960 KB Output is correct
28 Correct 3 ms 5068 KB Output is correct
29 Correct 3 ms 5068 KB Output is correct
30 Correct 3 ms 5068 KB Output is correct
31 Correct 4 ms 5068 KB Output is correct
32 Correct 3 ms 5116 KB Output is correct
33 Correct 3 ms 5068 KB Output is correct
34 Correct 3 ms 5024 KB Output is correct
35 Correct 3 ms 5068 KB Output is correct
36 Correct 3 ms 5068 KB Output is correct
37 Correct 3 ms 5068 KB Output is correct
38 Correct 3 ms 5068 KB Output is correct
39 Correct 3 ms 5068 KB Output is correct
40 Correct 3 ms 5120 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 2 ms 4940 KB Output is correct
6 Correct 2 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 2 ms 4940 KB Output is correct
9 Correct 2 ms 4940 KB Output is correct
10 Correct 2 ms 4940 KB Output is correct
11 Correct 2 ms 4940 KB Output is correct
12 Correct 2 ms 4940 KB Output is correct
13 Correct 2 ms 4940 KB Output is correct
14 Correct 2 ms 4940 KB Output is correct
15 Correct 2 ms 4940 KB Output is correct
16 Correct 3 ms 4940 KB Output is correct
17 Correct 3 ms 5020 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 4 ms 5024 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 4 ms 5068 KB Output is correct
22 Correct 3 ms 4940 KB Output is correct
23 Correct 3 ms 5020 KB Output is correct
24 Correct 2 ms 4940 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 3 ms 5068 KB Output is correct
27 Correct 3 ms 4960 KB Output is correct
28 Correct 3 ms 5068 KB Output is correct
29 Correct 3 ms 5068 KB Output is correct
30 Correct 3 ms 5068 KB Output is correct
31 Correct 4 ms 5068 KB Output is correct
32 Correct 3 ms 5116 KB Output is correct
33 Correct 3 ms 5068 KB Output is correct
34 Correct 3 ms 5024 KB Output is correct
35 Correct 3 ms 5068 KB Output is correct
36 Correct 3 ms 5068 KB Output is correct
37 Correct 3 ms 5068 KB Output is correct
38 Correct 3 ms 5068 KB Output is correct
39 Correct 3 ms 5068 KB Output is correct
40 Correct 3 ms 5120 KB Output is correct
41 Correct 55 ms 14520 KB Output is correct
42 Correct 30 ms 10072 KB Output is correct
43 Correct 51 ms 10092 KB Output is correct
44 Correct 39 ms 10020 KB Output is correct
45 Correct 33 ms 10096 KB Output is correct
46 Correct 103 ms 15028 KB Output is correct
47 Correct 145 ms 15048 KB Output is correct
48 Correct 113 ms 15036 KB Output is correct
49 Correct 94 ms 15036 KB Output is correct
50 Correct 24 ms 10304 KB Output is correct
51 Correct 26 ms 10308 KB Output is correct
52 Correct 24 ms 10312 KB Output is correct
53 Correct 51 ms 15540 KB Output is correct
54 Correct 54 ms 15456 KB Output is correct
55 Correct 58 ms 15460 KB Output is correct
56 Correct 3 ms 5068 KB Output is correct
57 Correct 7 ms 6732 KB Output is correct
58 Correct 27 ms 12904 KB Output is correct
59 Correct 78 ms 18300 KB Output is correct
60 Correct 55 ms 14756 KB Output is correct
61 Correct 87 ms 14408 KB Output is correct