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Submission #763313

# Submission time Handle Problem Language Result Execution time Memory
763313 2023-06-22T08:07:49 Z vjudge1 Power Plant (JOI20_power) C++17
100 / 100
 156 ms 28868 KB 
#include <bits/stdc++.h>

using namespace std;

int n;
vector<vector<int>> adjList;
vector<int> parent;
string isBased;

vector<int> potentialBasedCount;
vector<int> dp;

int result = 0;

void depthFirstSearchA(int u, int p)
{
    parent[u] = p;
    potentialBasedCount[u] = (isBased[u] == '1');
    for (auto &v : adjList[u])
        if (v != p)
        {
            depthFirstSearchA(v, u);
            potentialBasedCount[u] += potentialBasedCount[v];
        }
}

void depthFirstSearchB(int u, int p)
{
    int V = 0;
    for (auto &v : adjList[u])
        if (v != p)
        {
            depthFirstSearchB(v, u);
            dp[u] += dp[v];
            if (dp[v] > dp[V])
                V = v;
        }

    if (isBased[u] == '1')
    {
        result = max(dp[V] + 1, result);
        dp[u] = max(1, dp[u] - 1);
    }

    result = max(dp[u], result);
}

int main()
{
    // freopen("inp.txt", "r", stdin);

    ios::sync_with_stdio(false);

    cin >> n;
    adjList.resize(n + 1);
    parent.resize(n + 1);
    for (int u, v, i = 1; i < n; i++)
    {
        cin >> u >> v;
        adjList[u].emplace_back(v);
        adjList[v].emplace_back(u);
    }
    cin >> isBased;
    isBased = "!" + isBased;

    potentialBasedCount.resize(n + 1);
    depthFirstSearchA(1, -1);

    dp.resize(n + 1);
    depthFirstSearchB(1, -1);

    cout << result;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 2 ms 340 KB Output is correct
35 Correct 2 ms 460 KB Output is correct
36 Correct 2 ms 412 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 468 KB Output is correct
40 Correct 1 ms 468 KB Output is correct
41 Correct 1 ms 468 KB Output is correct
42 Correct 1 ms 468 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 468 KB Output is correct
45 Correct 1 ms 468 KB Output is correct
46 Correct 1 ms 468 KB Output is correct
47 Correct 1 ms 468 KB Output is correct
48 Correct 1 ms 468 KB Output is correct
49 Correct 1 ms 468 KB Output is correct
50 Correct 1 ms 468 KB Output is correct
51 Correct 1 ms 468 KB Output is correct
52 Correct 1 ms 468 KB Output is correct
53 Correct 1 ms 468 KB Output is correct
54 Correct 1 ms 468 KB Output is correct
55 Correct 1 ms 468 KB Output is correct
56 Correct 1 ms 428 KB Output is correct
57 Correct 1 ms 468 KB Output is correct
58 Correct 1 ms 468 KB Output is correct
59 Correct 1 ms 464 KB Output is correct
60 Correct 1 ms 468 KB Output is correct
61 Correct 1 ms 468 KB Output is correct
62 Correct 1 ms 492 KB Output is correct
63 Correct 1 ms 340 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 2 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 2 ms 340 KB Output is correct
35 Correct 2 ms 460 KB Output is correct
36 Correct 2 ms 412 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 468 KB Output is correct
40 Correct 1 ms 468 KB Output is correct
41 Correct 1 ms 468 KB Output is correct
42 Correct 1 ms 468 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 468 KB Output is correct
45 Correct 1 ms 468 KB Output is correct
46 Correct 1 ms 468 KB Output is correct
47 Correct 1 ms 468 KB Output is correct
48 Correct 1 ms 468 KB Output is correct
49 Correct 1 ms 468 KB Output is correct
50 Correct 1 ms 468 KB Output is correct
51 Correct 1 ms 468 KB Output is correct
52 Correct 1 ms 468 KB Output is correct
53 Correct 1 ms 468 KB Output is correct
54 Correct 1 ms 468 KB Output is correct
55 Correct 1 ms 468 KB Output is correct
56 Correct 1 ms 428 KB Output is correct
57 Correct 1 ms 468 KB Output is correct
58 Correct 1 ms 468 KB Output is correct
59 Correct 1 ms 464 KB Output is correct
60 Correct 1 ms 468 KB Output is correct
61 Correct 1 ms 468 KB Output is correct
62 Correct 1 ms 492 KB Output is correct
63 Correct 1 ms 340 KB Output is correct
64 Correct 95 ms 15128 KB Output is correct
65 Correct 123 ms 15124 KB Output is correct
66 Correct 156 ms 15152 KB Output is correct
67 Correct 134 ms 15176 KB Output is correct
68 Correct 122 ms 15188 KB Output is correct
69 Correct 91 ms 15176 KB Output is correct
70 Correct 120 ms 15196 KB Output is correct
71 Correct 153 ms 15188 KB Output is correct
72 Correct 92 ms 15188 KB Output is correct
73 Correct 128 ms 27940 KB Output is correct
74 Correct 154 ms 27772 KB Output is correct
75 Correct 100 ms 15048 KB Output is correct
76 Correct 94 ms 15100 KB Output is correct
77 Correct 106 ms 15092 KB Output is correct
78 Correct 106 ms 15012 KB Output is correct
79 Correct 126 ms 15060 KB Output is correct
80 Correct 118 ms 15072 KB Output is correct
81 Correct 88 ms 15596 KB Output is correct
82 Correct 95 ms 15212 KB Output is correct
83 Correct 109 ms 20240 KB Output is correct
84 Correct 114 ms 22360 KB Output is correct
85 Correct 110 ms 22016 KB Output is correct
86 Correct 99 ms 16440 KB Output is correct
87 Correct 90 ms 15872 KB Output is correct
88 Correct 94 ms 16420 KB Output is correct
89 Correct 100 ms 16364 KB Output is correct
90 Correct 117 ms 16240 KB Output is correct
91 Correct 102 ms 16352 KB Output is correct
92 Correct 126 ms 16808 KB Output is correct
93 Correct 92 ms 19172 KB Output is correct
94 Correct 109 ms 20940 KB Output is correct
95 Correct 96 ms 19588 KB Output is correct
96 Correct 96 ms 17680 KB Output is correct
97 Correct 123 ms 16216 KB Output is correct
98 Correct 112 ms 15852 KB Output is correct
99 Correct 95 ms 15532 KB Output is correct
100 Correct 92 ms 18696 KB Output is correct
101 Correct 93 ms 16668 KB Output is correct
102 Correct 88 ms 15928 KB Output is correct
103 Correct 102 ms 15732 KB Output is correct
104 Correct 60 ms 15952 KB Output is correct
105 Correct 142 ms 24644 KB Output is correct
106 Correct 71 ms 16092 KB Output is correct
107 Correct 61 ms 15932 KB Output is correct
108 Correct 135 ms 28508 KB Output is correct
109 Correct 87 ms 15916 KB Output is correct
110 Correct 118 ms 28868 KB Output is correct
111 Correct 104 ms 15052 KB Output is correct