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Submission #547786

# Submission time Handle Problem Language Result Execution time Memory
547786 2022-04-11T18:25:48 Z Soumya1 Cat in a tree (BOI17_catinatree) C++17
100 / 100
 71 ms 25020 KB 
#include <bits/stdc++.h>
#ifdef __LOCAL__
#include <debug_local.h>
#endif
using namespace std;
const int mxN = 2e5 + 5;
vector<int> ad[mxN];
pair<int, int> dp[mxN];
int n, d;
void dfs(int u) {
  dp[u] = {0, d};
  int s = 0;
  vector<int> vv;
  for (int v : ad[u]) {
    dfs(v);
    s += dp[v].first;
    vv.push_back(dp[v].second + 1);
  }
  sort(vv.begin(), vv.end());
  // debug(vv);
  for (int i = 0; i < (int) vv.size(); i++) {
    int j = lower_bound(vv.begin(), vv.end(), d - vv[i]) - vv.begin();
    int cnt;
    if (j > i) {
      cnt = j - 1;
    } else {
      cnt = i;
    }
    dp[u] = max(dp[u], {s - cnt, vv[i]});
  }
  if (dp[u].second >= d) dp[u].first++, dp[u].second = 0;
  // debug(u, dp[u]);
}
void testCase() {
  cin >> n >> d;
  for (int i = 1; i < n; i++) {
    int p;
    cin >> p;
    ad[p].push_back(i);
  }
  dfs(0);
  cout << dp[0].first << "\n";
}
int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  testCase();
  return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5028 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5024 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 5024 KB Output is correct
11 Correct 3 ms 5024 KB Output is correct
12 Correct 3 ms 5024 KB Output is correct
13 Correct 3 ms 5028 KB Output is correct
14 Correct 3 ms 4972 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5024 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 5024 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5028 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5024 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 5024 KB Output is correct
11 Correct 3 ms 5024 KB Output is correct
12 Correct 3 ms 5024 KB Output is correct
13 Correct 3 ms 5028 KB Output is correct
14 Correct 3 ms 4972 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5024 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 5024 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 5204 KB Output is correct
22 Correct 3 ms 5028 KB Output is correct
23 Correct 3 ms 5020 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 4 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 3 ms 4948 KB Output is correct
30 Correct 3 ms 4948 KB Output is correct
31 Correct 3 ms 4948 KB Output is correct
32 Correct 3 ms 4948 KB Output is correct
33 Correct 3 ms 5020 KB Output is correct
34 Correct 3 ms 4948 KB Output is correct
35 Correct 3 ms 5028 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 3 ms 5024 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 3 ms 5076 KB Output is correct
40 Correct 3 ms 5204 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5028 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5024 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 5024 KB Output is correct
11 Correct 3 ms 5024 KB Output is correct
12 Correct 3 ms 5024 KB Output is correct
13 Correct 3 ms 5028 KB Output is correct
14 Correct 3 ms 4972 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5024 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 5024 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 5204 KB Output is correct
22 Correct 3 ms 5028 KB Output is correct
23 Correct 3 ms 5020 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 4 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 3 ms 4948 KB Output is correct
30 Correct 3 ms 4948 KB Output is correct
31 Correct 3 ms 4948 KB Output is correct
32 Correct 3 ms 4948 KB Output is correct
33 Correct 3 ms 5020 KB Output is correct
34 Correct 3 ms 4948 KB Output is correct
35 Correct 3 ms 5028 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 3 ms 5024 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 3 ms 5076 KB Output is correct
40 Correct 3 ms 5204 KB Output is correct
41 Correct 39 ms 11592 KB Output is correct
42 Correct 26 ms 7892 KB Output is correct
43 Correct 27 ms 7920 KB Output is correct
44 Correct 27 ms 7852 KB Output is correct
45 Correct 31 ms 7884 KB Output is correct
46 Correct 71 ms 10960 KB Output is correct
47 Correct 71 ms 10920 KB Output is correct
48 Correct 64 ms 10952 KB Output is correct
49 Correct 63 ms 10956 KB Output is correct
50 Correct 14 ms 6764 KB Output is correct
51 Correct 19 ms 6744 KB Output is correct
52 Correct 15 ms 6764 KB Output is correct
53 Correct 27 ms 8372 KB Output is correct
54 Correct 28 ms 8400 KB Output is correct
55 Correct 27 ms 8488 KB Output is correct
56 Correct 3 ms 5204 KB Output is correct
57 Correct 8 ms 8660 KB Output is correct
58 Correct 27 ms 21796 KB Output is correct
59 Correct 62 ms 25020 KB Output is correct
60 Correct 40 ms 12192 KB Output is correct
61 Correct 48 ms 11504 KB Output is correct