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Submission #496550

# Submission time Handle Problem Language Result Execution time Memory
496550 2021-12-21T14:02:19 Z 600Mihnea Cats or Dogs (JOI18_catdog) C++17
38 / 100
 3000 ms 12236 KB 
#include "catdog.h"
#include <bits/stdc++.h>

using namespace std;


const int N = (int) 1e5 + 7;
const int INF = (int) 1e7 + 7;
int n;
int par[N];
int dp1[N];
int dp2[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] += min(dp1[b], 1 + dp2[b]);
    dp2[a] += min(dp2[b], 1 + dp1[b]);
  }
  dp1[a] += cost1[a];
  dp2[a] += cost2[a];
}

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

void changerec(int a, int nw1, int nw2) {
  if (!a) {
    return;
  }

  int p = par[a];

  changerec(p, dp1[p] - min(dp1[a], 1 + dp2[a]) + min(nw1, 1 + nw2), dp2[p] - min(dp2[a], 1 + dp1[a]) + min(nw2, 1 + nw1));

  dp1[a] = nw1;
  dp2[a] = nw2;
}

void change(int v, int c1, int c2) {
  changerec(v, dp1[v] - cost1[v] + c1, dp2[v] - cost2[v] + c2);
  cost1[v] = c1;
  cost2[v] = c2;
}

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 2636 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 1 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 1 ms 2636 KB Output is correct
11 Correct 1 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 1 ms 2636 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 1 ms 2636 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 1 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 1 ms 2636 KB Output is correct
11 Correct 1 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 1 ms 2636 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 1 ms 2636 KB Output is correct
17 Correct 2 ms 2656 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 2 ms 2636 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 2 ms 2636 KB Output is correct
23 Correct 2 ms 2636 KB Output is correct
24 Correct 2 ms 2636 KB Output is correct
25 Correct 2 ms 2636 KB Output is correct
26 Correct 2 ms 2636 KB Output is correct
27 Correct 2 ms 2636 KB Output is correct
28 Correct 2 ms 2764 KB Output is correct
29 Correct 4 ms 2764 KB Output is correct
30 Correct 2 ms 2636 KB Output is correct
31 Correct 2 ms 2716 KB Output is correct
32 Correct 2 ms 2636 KB Output is correct

Subtask #3
0 / 62.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 1 ms 2636 KB Output is correct
3 Correct 1 ms 2636 KB Output is correct
4 Correct 2 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 3 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 1 ms 2636 KB Output is correct
11 Correct 1 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 1 ms 2636 KB Output is correct
15 Correct 2 ms 2636 KB Output is correct
16 Correct 1 ms 2636 KB Output is correct
17 Correct 2 ms 2656 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 2 ms 2636 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 2 ms 2636 KB Output is correct
23 Correct 2 ms 2636 KB Output is correct
24 Correct 2 ms 2636 KB Output is correct
25 Correct 2 ms 2636 KB Output is correct
26 Correct 2 ms 2636 KB Output is correct
27 Correct 2 ms 2636 KB Output is correct
28 Correct 2 ms 2764 KB Output is correct
29 Correct 4 ms 2764 KB Output is correct
30 Correct 2 ms 2636 KB Output is correct
31 Correct 2 ms 2716 KB Output is correct
32 Correct 2 ms 2636 KB Output is correct
33 Correct 116 ms 6776 KB Output is correct
34 Correct 68 ms 7604 KB Output is correct
35 Correct 167 ms 7000 KB Output is correct
36 Correct 201 ms 11364 KB Output is correct
37 Correct 15 ms 5008 KB Output is correct
38 Correct 236 ms 12192 KB Output is correct
39 Correct 243 ms 12212 KB Output is correct
40 Correct 279 ms 12212 KB Output is correct
41 Correct 275 ms 12232 KB Output is correct
42 Correct 299 ms 12212 KB Output is correct
43 Correct 271 ms 12200 KB Output is correct
44 Correct 267 ms 12216 KB Output is correct
45 Correct 429 ms 12224 KB Output is correct
46 Correct 253 ms 12236 KB Output is correct
47 Correct 215 ms 12216 KB Output is correct
48 Correct 41 ms 9624 KB Output is correct
49 Correct 47 ms 11108 KB Output is correct
50 Correct 17 ms 4888 KB Output is correct
51 Correct 21 ms 6068 KB Output is correct
52 Correct 13 ms 4492 KB Output is correct
53 Correct 110 ms 10436 KB Output is correct
54 Correct 69 ms 6388 KB Output is correct
55 Correct 175 ms 9800 KB Output is correct
56 Correct 107 ms 7280 KB Output is correct
57 Correct 179 ms 10580 KB Output is correct
58 Correct 21 ms 5988 KB Output is correct
59 Correct 24 ms 5944 KB Output is correct
60 Correct 45 ms 10252 KB Output is correct
61 Correct 49 ms 10624 KB Output is correct
62 Correct 38 ms 8748 KB Output is correct
63 Execution timed out 3011 ms 10872 KB Time limit exceeded
64 Halted 0 ms 0 KB -