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답안 #1028798

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1028798 2024-07-20T08:52:55 Z NeroZein Cat Exercise (JOI23_ho_t4) C++17
31 / 100
 2000 ms 43432 KB 
#include "bits/stdc++.h"
using namespace std;

#ifdef Nero
#include "Deb.h"
#else
#define debug(...)
#endif

const int N = 2e5 + 5; 

int a[N];
int dep[N];
vector<int> g[N];
vector<pair<int, int>> t[N];

int dfs(int root, int v, int p) {
  if (a[v] > a[root]) {
    return 0;
  }
  int ret = v; 
  for (int u : g[v]) {
    if (u == p) {
      continue; 
    }
    dep[u] = dep[v] + 1; 
    int ret2 = dfs(root, u, v);
    if (a[ret2] > a[ret]) {
      ret = ret2;
    }
    if (v == root) {
      t[v].push_back({ret2, dep[ret2]}); 
    }
  }
  return ret; 
}

long long dfs2(int v) {
  long long ret = 0; 
  for (auto [u, w] : t[v]) {
    long long ret2 = dfs2(u);
    ret = max(ret, ret2 + w);
  }
  return ret; 
}

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
  int n;
  cin >> n;
  for (int i = 1; i <= n; ++i) {
    cin >> a[i];
  }
  for(int i = 0; i < n - 1; ++i) {
    int u, v;
    cin >> u >> v;
    g[u].push_back(v);
    g[v].push_back(u);
  }
  int root = 1; 
  for (int i = 1; i <= n; ++i) {
    if (a[i] == n) {
      root = i; 
    }
  }
  for (int i = 1; i <= n; ++i) {
    dep[i] = 0; 
    dfs(i, i, i);
  }
  cout << dfs2(root); 
  return 0;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 5 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 4 ms 9820 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 5 ms 10072 KB Output is correct
10 Correct 4 ms 9816 KB Output is correct

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 5 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 4 ms 9820 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 5 ms 10072 KB Output is correct
10 Correct 4 ms 9816 KB Output is correct
11 Correct 6 ms 9820 KB Output is correct
12 Correct 5 ms 9804 KB Output is correct
13 Correct 5 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 5 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 5 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 4 ms 9820 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 5 ms 10072 KB Output is correct
10 Correct 4 ms 9816 KB Output is correct
11 Correct 6 ms 9820 KB Output is correct
12 Correct 5 ms 9804 KB Output is correct
13 Correct 5 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 5 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 110 ms 10588 KB Output is correct
19 Correct 116 ms 10588 KB Output is correct
20 Correct 99 ms 10588 KB Output is correct
21 Correct 7 ms 10584 KB Output is correct
22 Correct 9 ms 10588 KB Output is correct
23 Correct 11 ms 10388 KB Output is correct
24 Correct 6 ms 10332 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 5 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 4 ms 9820 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 5 ms 10072 KB Output is correct
10 Correct 4 ms 9816 KB Output is correct
11 Correct 6 ms 9820 KB Output is correct
12 Correct 5 ms 9804 KB Output is correct
13 Correct 5 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 5 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 110 ms 10588 KB Output is correct
19 Correct 116 ms 10588 KB Output is correct
20 Correct 99 ms 10588 KB Output is correct
21 Correct 7 ms 10584 KB Output is correct
22 Correct 9 ms 10588 KB Output is correct
23 Correct 11 ms 10388 KB Output is correct
24 Correct 6 ms 10332 KB Output is correct
25 Correct 4 ms 9820 KB Output is correct
26 Correct 125 ms 10580 KB Output is correct
27 Correct 115 ms 10576 KB Output is correct
28 Correct 117 ms 10580 KB Output is correct
29 Correct 120 ms 10588 KB Output is correct
30 Correct 11 ms 10076 KB Output is correct
31 Correct 21 ms 10076 KB Output is correct
32 Correct 12 ms 10080 KB Output is correct
33 Correct 14 ms 10076 KB Output is correct

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 5 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 4 ms 9820 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 5 ms 10072 KB Output is correct
10 Correct 4 ms 9816 KB Output is correct
11 Correct 6 ms 9820 KB Output is correct
12 Correct 5 ms 9804 KB Output is correct
13 Correct 5 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 5 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 110 ms 10588 KB Output is correct
19 Correct 116 ms 10588 KB Output is correct
20 Correct 99 ms 10588 KB Output is correct
21 Correct 7 ms 10584 KB Output is correct
22 Correct 9 ms 10588 KB Output is correct
23 Correct 11 ms 10388 KB Output is correct
24 Correct 6 ms 10332 KB Output is correct
25 Execution timed out 2021 ms 43432 KB Time limit exceeded
26 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 9820 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Execution timed out 2087 ms 23032 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #7
0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 9820 KB Output is correct
2 Correct 4 ms 9820 KB Output is correct
3 Correct 5 ms 9820 KB Output is correct
4 Correct 5 ms 9820 KB Output is correct
5 Correct 4 ms 9820 KB Output is correct
6 Correct 4 ms 9820 KB Output is correct
7 Correct 4 ms 9820 KB Output is correct
8 Correct 4 ms 9820 KB Output is correct
9 Correct 5 ms 10072 KB Output is correct
10 Correct 4 ms 9816 KB Output is correct
11 Correct 6 ms 9820 KB Output is correct
12 Correct 5 ms 9804 KB Output is correct
13 Correct 5 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 4 ms 9820 KB Output is correct
16 Correct 5 ms 9820 KB Output is correct
17 Correct 4 ms 9820 KB Output is correct
18 Correct 110 ms 10588 KB Output is correct
19 Correct 116 ms 10588 KB Output is correct
20 Correct 99 ms 10588 KB Output is correct
21 Correct 7 ms 10584 KB Output is correct
22 Correct 9 ms 10588 KB Output is correct
23 Correct 11 ms 10388 KB Output is correct
24 Correct 6 ms 10332 KB Output is correct
25 Correct 4 ms 9820 KB Output is correct
26 Correct 125 ms 10580 KB Output is correct
27 Correct 115 ms 10576 KB Output is correct
28 Correct 117 ms 10580 KB Output is correct
29 Correct 120 ms 10588 KB Output is correct
30 Correct 11 ms 10076 KB Output is correct
31 Correct 21 ms 10076 KB Output is correct
32 Correct 12 ms 10080 KB Output is correct
33 Correct 14 ms 10076 KB Output is correct
34 Execution timed out 2021 ms 43432 KB Time limit exceeded
35 Halted 0 ms 0 KB -