oj.uz

Submission #943710

# Submission time Handle Problem Language Result Execution time Memory
943710 2024-03-11T18:33:41 Z stefanneagu Cat in a tree (BOI17_catinatree) C++17
0 / 100
 1 ms 344 KB 
#include <bits/stdc++.h>

using namespace std;

const int nmax = 1e5 + 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]);
    }
  }
  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:27:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |   while(ind < v.size() - 1 && v[ind] + v[ind + 1] < k) {
      |         ~~~~^~~~~~~~~~~~~~

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 49.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -