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Submission #783865

# Submission time Handle Problem Language Result Execution time Memory
783865 2023-07-15T11:34:02 Z tvladm2009 Cats or Dogs (JOI18_catdog) C++17
38 / 100
 3000 ms 8012 KB 
#include <bits/stdc++.h>
#include "catdog.h"

using namespace std;

const int N = (int) 1e5 + 7;
const int INF = (int) 1e9;
int n;
int par[N];
int dp1[N];
int dp2[N];
int dp3[N];
int dp4[N];
int cost1[N];
int cost2[N];
vector<int> g[N];

void build(int a, int p = 0) {
  par[a] = p;
  vector<int> kids;
  for (auto &b : g[a]) {
    if (b != p) {
      kids.push_back(b);
      build(b, a);
    }
  }
  g[a] = kids;
}

void dfs(int a) {
  dp1[a] = 0;
  dp2[a] = 0;
  for (auto &b : g[a]) {
    dfs(b);
    dp1[a] += dp3[b];
    dp2[a] += dp4[b];
  }
  dp1[a] += cost1[a];
  dp2[a] += cost2[a];

  dp3[a] = min(dp1[a], dp2[a] + 1);
  dp4[a] = min(dp2[a], dp1[a] + 1);
}

void initialize(int nn, vector<int> a, vector<int> b) {
  n = nn;
  for (int i = 0; i < n - 1; i++) {
    g[a[i]].push_back(b[i]);
    g[b[i]].push_back(a[i]);
  }
  build(1);
}

void change(int v, int c1, int c2) {
  cost1[v] = c1;
  cost2[v] = c2;
  dfs(1);
}

int cat(int v) {
  change(v, INF, 0);
  return min(dp1[1], dp2[1]);
}

int dog(int v) {
  change(v, 0, INF);
  return min(dp1[1], dp2[1]);
}

int neighbor(int v) {
  change(v, 0, 0);
  return min(dp1[1], dp2[1]);
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2660 KB Output is correct
3 Correct 2 ms 2664 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2668 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2768 KB Output is correct
9 Correct 2 ms 2656 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 1 ms 2664 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2772 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2668 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2660 KB Output is correct
3 Correct 2 ms 2664 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2668 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2768 KB Output is correct
9 Correct 2 ms 2656 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 1 ms 2664 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2772 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2668 KB Output is correct
17 Correct 8 ms 2760 KB Output is correct
18 Correct 10 ms 2768 KB Output is correct
19 Correct 6 ms 2764 KB Output is correct
20 Correct 2 ms 2664 KB Output is correct
21 Correct 3 ms 2644 KB Output is correct
22 Correct 3 ms 2668 KB Output is correct
23 Correct 12 ms 2644 KB Output is correct
24 Correct 9 ms 2760 KB Output is correct
25 Correct 5 ms 2664 KB Output is correct
26 Correct 3 ms 2664 KB Output is correct
27 Correct 3 ms 2660 KB Output is correct
28 Correct 4 ms 2792 KB Output is correct
29 Correct 12 ms 2772 KB Output is correct
30 Correct 2 ms 2644 KB Output is correct
31 Correct 3 ms 2644 KB Output is correct
32 Correct 3 ms 2644 KB Output is correct

Subtask #3
0 / 62.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2660 KB Output is correct
3 Correct 2 ms 2664 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2668 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 2 ms 2644 KB Output is correct
8 Correct 2 ms 2768 KB Output is correct
9 Correct 2 ms 2656 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 1 ms 2664 KB Output is correct
13 Correct 2 ms 2644 KB Output is correct
14 Correct 2 ms 2772 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct
16 Correct 2 ms 2668 KB Output is correct
17 Correct 8 ms 2760 KB Output is correct
18 Correct 10 ms 2768 KB Output is correct
19 Correct 6 ms 2764 KB Output is correct
20 Correct 2 ms 2664 KB Output is correct
21 Correct 3 ms 2644 KB Output is correct
22 Correct 3 ms 2668 KB Output is correct
23 Correct 12 ms 2644 KB Output is correct
24 Correct 9 ms 2760 KB Output is correct
25 Correct 5 ms 2664 KB Output is correct
26 Correct 3 ms 2664 KB Output is correct
27 Correct 3 ms 2660 KB Output is correct
28 Correct 4 ms 2792 KB Output is correct
29 Correct 12 ms 2772 KB Output is correct
30 Correct 2 ms 2644 KB Output is correct
31 Correct 3 ms 2644 KB Output is correct
32 Correct 3 ms 2644 KB Output is correct
33 Execution timed out 3063 ms 8012 KB Time limit exceeded
34 Halted 0 ms 0 KB -