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Submission #528828

# Submission time Handle Problem Language Result Execution time Memory
528828 2022-02-21T14:25:33 Z Alex_tz307 Cat in a tree (BOI17_catinatree) C++17
100 / 100
 133 ms 16268 KB 
#include <bits/stdc++.h>
#define INF 0x3f3f3f3f

using namespace std;

const int kN = 2e5;
vector<int> g[kN];
int mark[kN];

void dfs(int u, int d) {
  if (d <= mark[u]) {
    return;
  }
  mark[u] = d;
  for (int v : g[u]) {
    dfs(v, d - 1);
  }
}

void testCase() {
  int n, d;
  cin >> n >> d;
  vector<int> dep(n);
  vector<pair<int, int>> nodes(n, {0, 0});
  for (int v = 1; v < n; ++v) {
    int u;
    cin >> u;
    g[u].emplace_back(v);
    g[v].emplace_back(u);
    dep[v] = dep[u] + 1;
    nodes[v] = {dep[v], v};
  }
  sort(nodes.begin(), nodes.end(), greater<pair<int, int>>());
  int ans = 0;
  for (auto it : nodes) {
    if (mark[it.second] == 0) {
      ans += 1;
      dfs(it.second, d);
    }
  }
  cout << ans << '\n';
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  int tests = 1;
  for (int tc = 0; tc < tests; ++tc) {
    testCase();
  }
  return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 2 ms 5012 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 4932 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 3 ms 5012 KB Output is correct
10 Correct 3 ms 4912 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 2 ms 4940 KB Output is correct
13 Correct 3 ms 4916 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 2 ms 5020 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 2 ms 4940 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 2 ms 5012 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 4932 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 3 ms 5012 KB Output is correct
10 Correct 3 ms 4912 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 2 ms 4940 KB Output is correct
13 Correct 3 ms 4916 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 2 ms 5020 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 2 ms 4940 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 5008 KB Output is correct
23 Correct 3 ms 4940 KB Output is correct
24 Correct 3 ms 4940 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 3 ms 4996 KB Output is correct
27 Correct 3 ms 5068 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 3 ms 5068 KB Output is correct
32 Correct 3 ms 5068 KB Output is correct
33 Correct 3 ms 5068 KB Output is correct
34 Correct 3 ms 5068 KB Output is correct
35 Correct 3 ms 5068 KB Output is correct
36 Correct 3 ms 5024 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 5020 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 2 ms 5012 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 4932 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 3 ms 5012 KB Output is correct
10 Correct 3 ms 4912 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 2 ms 4940 KB Output is correct
13 Correct 3 ms 4916 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 2 ms 5020 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 2 ms 4940 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 5008 KB Output is correct
23 Correct 3 ms 4940 KB Output is correct
24 Correct 3 ms 4940 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 3 ms 4996 KB Output is correct
27 Correct 3 ms 5068 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 3 ms 5068 KB Output is correct
32 Correct 3 ms 5068 KB Output is correct
33 Correct 3 ms 5068 KB Output is correct
34 Correct 3 ms 5068 KB Output is correct
35 Correct 3 ms 5068 KB Output is correct
36 Correct 3 ms 5024 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 5020 KB Output is correct
41 Correct 60 ms 15000 KB Output is correct
42 Correct 35 ms 10356 KB Output is correct
43 Correct 41 ms 10320 KB Output is correct
44 Correct 35 ms 10344 KB Output is correct
45 Correct 36 ms 10308 KB Output is correct
46 Correct 85 ms 15684 KB Output is correct
47 Correct 133 ms 15704 KB Output is correct
48 Correct 86 ms 15680 KB Output is correct
49 Correct 90 ms 15776 KB Output is correct
50 Correct 28 ms 10524 KB Output is correct
51 Correct 27 ms 10564 KB Output is correct
52 Correct 29 ms 10508 KB Output is correct
53 Correct 57 ms 16212 KB Output is correct
54 Correct 61 ms 16268 KB Output is correct
55 Correct 62 ms 16208 KB Output is correct
56 Correct 3 ms 5060 KB Output is correct
57 Correct 7 ms 6172 KB Output is correct
58 Correct 27 ms 10532 KB Output is correct
59 Correct 73 ms 15916 KB Output is correct
60 Correct 61 ms 15304 KB Output is correct
61 Correct 84 ms 15044 KB Output is correct