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Submission #782324

# Submission time Handle Problem Language Result Execution time Memory
782324 2023-07-13T19:48:35 Z tvladm2009 Power Plant (JOI20_power) C++17
100 / 100
 143 ms 24080 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

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

void compute(int a, int p = 0) {
  dp[a] = 0;
  for (auto &b : g[a]) {
    if (b != p) {
      dp[a] += max(dp[b], is[b]);
    }
  }
  dp[a] -= is[a];
}

void dfs(int a, int p = 0) {
  for (auto &b : g[a]) {
    if (b != p) {
      dfs(b, a);
    }
  }
  compute(a, p);
}

void rer(int p, int a) {
  dp[a] -= max(dp[p], is[p]);
  dp[p] += max(dp[a], is[a]);
}

void solve(int a, int p = 0) {
  sol = max(sol, dp[a]);
  for (auto &b : g[a]) {
    if (b != p) {
      rer(b, a);
      solve(b, a);
      rer(a, b);
    }
  }
}

signed main() {
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

  ///freopen("input", "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);
  dfs(1);
  solve(1);
  cout << sol << "\n";
  return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 5024 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4916 KB Output is correct
15 Correct 3 ms 5000 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 4 ms 5024 KB Output is correct
19 Correct 3 ms 5024 KB Output is correct
20 Correct 4 ms 5080 KB Output is correct
21 Correct 2 ms 4948 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 5024 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4916 KB Output is correct
15 Correct 3 ms 5000 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 4 ms 5024 KB Output is correct
19 Correct 3 ms 5024 KB Output is correct
20 Correct 4 ms 5080 KB Output is correct
21 Correct 2 ms 4948 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 3 ms 5036 KB Output is correct
24 Correct 3 ms 5048 KB Output is correct
25 Correct 3 ms 5076 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 3 ms 5044 KB Output is correct
29 Correct 4 ms 5204 KB Output is correct
30 Correct 4 ms 5164 KB Output is correct
31 Correct 4 ms 5040 KB Output is correct
32 Correct 3 ms 5040 KB Output is correct
33 Correct 3 ms 5040 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 3 ms 5084 KB Output is correct
36 Correct 4 ms 5076 KB Output is correct
37 Correct 3 ms 5040 KB Output is correct
38 Correct 3 ms 5088 KB Output is correct
39 Correct 3 ms 5040 KB Output is correct
40 Correct 3 ms 5032 KB Output is correct
41 Correct 3 ms 5168 KB Output is correct
42 Correct 3 ms 5076 KB Output is correct
43 Correct 4 ms 5036 KB Output is correct
44 Correct 3 ms 5076 KB Output is correct
45 Correct 3 ms 5044 KB Output is correct
46 Correct 3 ms 5040 KB Output is correct
47 Correct 3 ms 5044 KB Output is correct
48 Correct 3 ms 5164 KB Output is correct
49 Correct 4 ms 5076 KB Output is correct
50 Correct 3 ms 5076 KB Output is correct
51 Correct 3 ms 5044 KB Output is correct
52 Correct 4 ms 5076 KB Output is correct
53 Correct 5 ms 5084 KB Output is correct
54 Correct 4 ms 5036 KB Output is correct
55 Correct 3 ms 5036 KB Output is correct
56 Correct 3 ms 5076 KB Output is correct
57 Correct 3 ms 5204 KB Output is correct
58 Correct 3 ms 5076 KB Output is correct
59 Correct 4 ms 5040 KB Output is correct
60 Correct 4 ms 5172 KB Output is correct
61 Correct 4 ms 5040 KB Output is correct
62 Correct 4 ms 5168 KB Output is correct
63 Correct 3 ms 5076 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 5024 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 4 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4916 KB Output is correct
15 Correct 3 ms 5000 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 4 ms 5024 KB Output is correct
19 Correct 3 ms 5024 KB Output is correct
20 Correct 4 ms 5080 KB Output is correct
21 Correct 2 ms 4948 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 3 ms 5036 KB Output is correct
24 Correct 3 ms 5048 KB Output is correct
25 Correct 3 ms 5076 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 3 ms 5044 KB Output is correct
29 Correct 4 ms 5204 KB Output is correct
30 Correct 4 ms 5164 KB Output is correct
31 Correct 4 ms 5040 KB Output is correct
32 Correct 3 ms 5040 KB Output is correct
33 Correct 3 ms 5040 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 3 ms 5084 KB Output is correct
36 Correct 4 ms 5076 KB Output is correct
37 Correct 3 ms 5040 KB Output is correct
38 Correct 3 ms 5088 KB Output is correct
39 Correct 3 ms 5040 KB Output is correct
40 Correct 3 ms 5032 KB Output is correct
41 Correct 3 ms 5168 KB Output is correct
42 Correct 3 ms 5076 KB Output is correct
43 Correct 4 ms 5036 KB Output is correct
44 Correct 3 ms 5076 KB Output is correct
45 Correct 3 ms 5044 KB Output is correct
46 Correct 3 ms 5040 KB Output is correct
47 Correct 3 ms 5044 KB Output is correct
48 Correct 3 ms 5164 KB Output is correct
49 Correct 4 ms 5076 KB Output is correct
50 Correct 3 ms 5076 KB Output is correct
51 Correct 3 ms 5044 KB Output is correct
52 Correct 4 ms 5076 KB Output is correct
53 Correct 5 ms 5084 KB Output is correct
54 Correct 4 ms 5036 KB Output is correct
55 Correct 3 ms 5036 KB Output is correct
56 Correct 3 ms 5076 KB Output is correct
57 Correct 3 ms 5204 KB Output is correct
58 Correct 3 ms 5076 KB Output is correct
59 Correct 4 ms 5040 KB Output is correct
60 Correct 4 ms 5172 KB Output is correct
61 Correct 4 ms 5040 KB Output is correct
62 Correct 4 ms 5168 KB Output is correct
63 Correct 3 ms 5076 KB Output is correct
64 Correct 121 ms 15996 KB Output is correct
65 Correct 92 ms 15900 KB Output is correct
66 Correct 101 ms 15944 KB Output is correct
67 Correct 135 ms 15984 KB Output is correct
68 Correct 135 ms 15924 KB Output is correct
69 Correct 117 ms 16100 KB Output is correct
70 Correct 90 ms 15904 KB Output is correct
71 Correct 91 ms 15876 KB Output is correct
72 Correct 94 ms 15868 KB Output is correct
73 Correct 117 ms 23396 KB Output is correct
74 Correct 112 ms 23360 KB Output is correct
75 Correct 100 ms 15864 KB Output is correct
76 Correct 128 ms 15840 KB Output is correct
77 Correct 143 ms 15860 KB Output is correct
78 Correct 115 ms 15792 KB Output is correct
79 Correct 85 ms 15832 KB Output is correct
80 Correct 87 ms 15852 KB Output is correct
81 Correct 72 ms 16200 KB Output is correct
82 Correct 127 ms 16032 KB Output is correct
83 Correct 138 ms 18972 KB Output is correct
84 Correct 120 ms 20248 KB Output is correct
85 Correct 102 ms 20112 KB Output is correct
86 Correct 97 ms 16732 KB Output is correct
87 Correct 107 ms 16440 KB Output is correct
88 Correct 97 ms 16852 KB Output is correct
89 Correct 84 ms 16864 KB Output is correct
90 Correct 82 ms 16836 KB Output is correct
91 Correct 81 ms 16952 KB Output is correct
92 Correct 107 ms 17096 KB Output is correct
93 Correct 78 ms 18328 KB Output is correct
94 Correct 89 ms 19504 KB Output is correct
95 Correct 76 ms 18716 KB Output is correct
96 Correct 92 ms 17620 KB Output is correct
97 Correct 108 ms 16680 KB Output is correct
98 Correct 78 ms 16420 KB Output is correct
99 Correct 110 ms 16320 KB Output is correct
100 Correct 116 ms 18228 KB Output is correct
101 Correct 76 ms 16908 KB Output is correct
102 Correct 93 ms 16520 KB Output is correct
103 Correct 96 ms 16488 KB Output is correct
104 Correct 46 ms 16744 KB Output is correct
105 Correct 105 ms 21516 KB Output is correct
106 Correct 63 ms 16672 KB Output is correct
107 Correct 48 ms 16696 KB Output is correct
108 Correct 99 ms 23948 KB Output is correct
109 Correct 51 ms 16800 KB Output is correct
110 Correct 111 ms 24080 KB Output is correct
111 Correct 115 ms 15872 KB Output is correct