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Submission #943716

# Submission time Handle Problem Language Result Execution time Memory
943716 2024-03-11T18:36:01 Z stefanneagu Cat in a tree (BOI17_catinatree) C++17
100 / 100
 122 ms 26712 KB 
#include <bits/stdc++.h>

using namespace std;

const int nmax = 2e5 + 1;

int k, sz[nmax], l[nmax];

vector<vector<int>> adj;

void dfs(int i, int tata) {
  for(auto it : adj[i]) {
    if(it != tata) {
      dfs(it, i);
    }
  }
  int x = 1;
  vector<int> v;
  v.push_back(0); // daca pot sa bag la nodul i?
  for(auto it : adj[i]) {
    if(it != tata) {
      x += sz[it];
      v.push_back(l[it]);
    }
  }
  sort(v.begin(), v.end());
  int ind = 0;
  while(ind < v.size() - 1 && v[ind] + v[ind + 1] < k) {
    ind ++;
    x --;
  }
  l[i] = v[ind] + 1;
  sz[i] = x;
}

int main() {
  int n;
  cin >> n >> k;
  adj.resize(n + 1);
  for(int i = 2; i <= n; i ++) {
    int a;
    cin >> a;
    a ++;
    adj[a].push_back(i);
    adj[i].push_back(a);
  }
  dfs(1, 0);
  cout << sz[1];
  return 0;
}

Compilation message

catinatree.cpp: In function 'void dfs(int, int)':
catinatree.cpp:28:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   while(ind < v.size() - 1 && v[ind] + v[ind + 1] < k) {
      |         ~~~~^~~~~~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 440 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 440 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 2 ms 604 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 600 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 344 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 604 KB Output is correct
40 Correct 1 ms 604 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 440 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 2 ms 604 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 1 ms 344 KB Output is correct
26 Correct 1 ms 344 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Correct 1 ms 348 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 1 ms 344 KB Output is correct
31 Correct 1 ms 348 KB Output is correct
32 Correct 1 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 1 ms 600 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 1 ms 344 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 1 ms 604 KB Output is correct
40 Correct 1 ms 604 KB Output is correct
41 Correct 67 ms 13520 KB Output is correct
42 Correct 36 ms 7248 KB Output is correct
43 Correct 37 ms 7188 KB Output is correct
44 Correct 41 ms 7176 KB Output is correct
45 Correct 45 ms 7196 KB Output is correct
46 Correct 85 ms 14132 KB Output is correct
47 Correct 87 ms 14128 KB Output is correct
48 Correct 122 ms 14320 KB Output is correct
49 Correct 103 ms 14160 KB Output is correct
50 Correct 27 ms 7568 KB Output is correct
51 Correct 29 ms 7544 KB Output is correct
52 Correct 43 ms 7368 KB Output is correct
53 Correct 74 ms 14764 KB Output is correct
54 Correct 74 ms 14640 KB Output is correct
55 Correct 112 ms 14772 KB Output is correct
56 Correct 2 ms 604 KB Output is correct
57 Correct 10 ms 4188 KB Output is correct
58 Correct 42 ms 18460 KB Output is correct
59 Correct 102 ms 26712 KB Output is correct
60 Correct 75 ms 14184 KB Output is correct
61 Correct 84 ms 13492 KB Output is correct