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Submission #493637

# Submission time Handle Problem Language Result Execution time Memory
493637 2021-12-12T12:44:50 Z 600Mihnea Power Plant (JOI20_power) C++17
47 / 100
 1500 ms 15968 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = (int) 2e5 + 7;
int n;
int sol;
int dp[N];
int is[N];
vector<int> g[N];
string s;

void build(int a, int p = -1) {
  dp[a] = 0;
  for (auto &b : g[a]) {
    if (b != p) {
      build(b, a);
      dp[a] += dp[b];
    }
  }
  dp[a] -= is[a];
  dp[a] = max(dp[a], is[a]);
}
int main() {
  ios::sync_with_stdio(0); cin.tie(0);

  ///freopen ("input.txt", "r", stdin);

  cin >> n;
  for (int i = 1; i < n; i++) {
    int a, b;
    cin >> a >> b;
    g[a].push_back(b);
    g[b].push_back(a);
  }
  cin >> s;
  int cnt = 0;
  for (int i = 1; i <= n; i++) {
    is[i] = s[i - 1] - '0';
    cnt += is[i];
  }
  sol = min(cnt, 2);
  for (int i = 1; i <= n; i++) {
    build(i);
    sol = max(sol, dp[i]);
  }
  cout << sol << "\n";

  return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 2 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 2 ms 4940 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 2 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 2 ms 4940 KB Output is correct
9 Correct 3 ms 4944 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 3 ms 4944 KB Output is correct
12 Correct 3 ms 4944 KB Output is correct
13 Correct 3 ms 5032 KB Output is correct
14 Correct 3 ms 4944 KB Output is correct
15 Correct 4 ms 4944 KB Output is correct
16 Correct 4 ms 4944 KB Output is correct
17 Correct 3 ms 5024 KB Output is correct
18 Correct 3 ms 4944 KB Output is correct
19 Correct 4 ms 4944 KB Output is correct
20 Correct 3 ms 4944 KB Output is correct
21 Correct 3 ms 4944 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 2 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 2 ms 4940 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 2 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 2 ms 4940 KB Output is correct
9 Correct 3 ms 4944 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 3 ms 4944 KB Output is correct
12 Correct 3 ms 4944 KB Output is correct
13 Correct 3 ms 5032 KB Output is correct
14 Correct 3 ms 4944 KB Output is correct
15 Correct 4 ms 4944 KB Output is correct
16 Correct 4 ms 4944 KB Output is correct
17 Correct 3 ms 5024 KB Output is correct
18 Correct 3 ms 4944 KB Output is correct
19 Correct 4 ms 4944 KB Output is correct
20 Correct 3 ms 4944 KB Output is correct
21 Correct 3 ms 4944 KB Output is correct
22 Correct 63 ms 5104 KB Output is correct
23 Correct 70 ms 5104 KB Output is correct
24 Correct 78 ms 5112 KB Output is correct
25 Correct 67 ms 5112 KB Output is correct
26 Correct 61 ms 5072 KB Output is correct
27 Correct 61 ms 5108 KB Output is correct
28 Correct 61 ms 5072 KB Output is correct
29 Correct 88 ms 5248 KB Output is correct
30 Correct 97 ms 5240 KB Output is correct
31 Correct 69 ms 5120 KB Output is correct
32 Correct 59 ms 5072 KB Output is correct
33 Correct 72 ms 5108 KB Output is correct
34 Correct 64 ms 5104 KB Output is correct
35 Correct 66 ms 5104 KB Output is correct
36 Correct 66 ms 5072 KB Output is correct
37 Correct 58 ms 5072 KB Output is correct
38 Correct 68 ms 5200 KB Output is correct
39 Correct 72 ms 5072 KB Output is correct
40 Correct 70 ms 5072 KB Output is correct
41 Correct 74 ms 5168 KB Output is correct
42 Correct 66 ms 5136 KB Output is correct
43 Correct 95 ms 5072 KB Output is correct
44 Correct 62 ms 5072 KB Output is correct
45 Correct 61 ms 5136 KB Output is correct
46 Correct 58 ms 5072 KB Output is correct
47 Correct 60 ms 5072 KB Output is correct
48 Correct 58 ms 5164 KB Output is correct
49 Correct 65 ms 5176 KB Output is correct
50 Correct 67 ms 5152 KB Output is correct
51 Correct 64 ms 5148 KB Output is correct
52 Correct 71 ms 5116 KB Output is correct
53 Correct 56 ms 5072 KB Output is correct
54 Correct 60 ms 5072 KB Output is correct
55 Correct 61 ms 5072 KB Output is correct
56 Correct 35 ms 5136 KB Output is correct
57 Correct 96 ms 5200 KB Output is correct
58 Correct 36 ms 5116 KB Output is correct
59 Correct 35 ms 5072 KB Output is correct
60 Correct 85 ms 5224 KB Output is correct
61 Correct 32 ms 5072 KB Output is correct
62 Correct 87 ms 5236 KB Output is correct
63 Correct 52 ms 5108 KB Output is correct

Subtask #3
0.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 2 ms 4940 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 2 ms 4940 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 2 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 2 ms 4940 KB Output is correct
9 Correct 3 ms 4944 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 3 ms 4944 KB Output is correct
12 Correct 3 ms 4944 KB Output is correct
13 Correct 3 ms 5032 KB Output is correct
14 Correct 3 ms 4944 KB Output is correct
15 Correct 4 ms 4944 KB Output is correct
16 Correct 4 ms 4944 KB Output is correct
17 Correct 3 ms 5024 KB Output is correct
18 Correct 3 ms 4944 KB Output is correct
19 Correct 4 ms 4944 KB Output is correct
20 Correct 3 ms 4944 KB Output is correct
21 Correct 3 ms 4944 KB Output is correct
22 Correct 63 ms 5104 KB Output is correct
23 Correct 70 ms 5104 KB Output is correct
24 Correct 78 ms 5112 KB Output is correct
25 Correct 67 ms 5112 KB Output is correct
26 Correct 61 ms 5072 KB Output is correct
27 Correct 61 ms 5108 KB Output is correct
28 Correct 61 ms 5072 KB Output is correct
29 Correct 88 ms 5248 KB Output is correct
30 Correct 97 ms 5240 KB Output is correct
31 Correct 69 ms 5120 KB Output is correct
32 Correct 59 ms 5072 KB Output is correct
33 Correct 72 ms 5108 KB Output is correct
34 Correct 64 ms 5104 KB Output is correct
35 Correct 66 ms 5104 KB Output is correct
36 Correct 66 ms 5072 KB Output is correct
37 Correct 58 ms 5072 KB Output is correct
38 Correct 68 ms 5200 KB Output is correct
39 Correct 72 ms 5072 KB Output is correct
40 Correct 70 ms 5072 KB Output is correct
41 Correct 74 ms 5168 KB Output is correct
42 Correct 66 ms 5136 KB Output is correct
43 Correct 95 ms 5072 KB Output is correct
44 Correct 62 ms 5072 KB Output is correct
45 Correct 61 ms 5136 KB Output is correct
46 Correct 58 ms 5072 KB Output is correct
47 Correct 60 ms 5072 KB Output is correct
48 Correct 58 ms 5164 KB Output is correct
49 Correct 65 ms 5176 KB Output is correct
50 Correct 67 ms 5152 KB Output is correct
51 Correct 64 ms 5148 KB Output is correct
52 Correct 71 ms 5116 KB Output is correct
53 Correct 56 ms 5072 KB Output is correct
54 Correct 60 ms 5072 KB Output is correct
55 Correct 61 ms 5072 KB Output is correct
56 Correct 35 ms 5136 KB Output is correct
57 Correct 96 ms 5200 KB Output is correct
58 Correct 36 ms 5116 KB Output is correct
59 Correct 35 ms 5072 KB Output is correct
60 Correct 85 ms 5224 KB Output is correct
61 Correct 32 ms 5072 KB Output is correct
62 Correct 87 ms 5236 KB Output is correct
63 Correct 52 ms 5108 KB Output is correct
64 Execution timed out 1583 ms 15968 KB Time limit exceeded
65 Halted 0 ms 0 KB -