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Submission #599287

# Submission time Handle Problem Language Result Execution time Memory
599287 2022-07-19T12:25:01 Z Jomnoi Power Plant (JOI20_power) C++17
100 / 100
 218 ms 29260 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAX_N = 2e5 + 5;

int ans;
vector <int> graph[MAX_N];
int power[MAX_N];
int dp[MAX_N];

void dfs(int u, int p) {
    int ma = 0;
    for(auto v : graph[u]) {
        if(v == p) {
            continue;
        }

        dfs(v, u);

        ma = max(ma, dp[v]);
        dp[u] += dp[v];
    }

    dp[u] = max(dp[u] - power[u], power[u]);

    ans = max({ans, dp[u], ma + power[u]});
}

int main() {
    cin.tie(nullptr)->sync_with_stdio(false);

    int N;
    cin >> N;

    for(int i = 1; i <= N - 1; i++) {
        int a, b;
        cin >> a >> b;

        graph[a].push_back(b);
        graph[b].push_back(a);
    }

    for(int i = 1; i <= N; i++) {
        char c;
        cin >> c;

        power[i] = c - '0';
    }

    dfs(1, -1);

    cout << ans;
    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4968 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 5024 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 3 ms 5028 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 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 4 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 4 ms 5020 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 5024 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4968 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 5024 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 3 ms 5028 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 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 4 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 4 ms 5020 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 5024 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 6 ms 5016 KB Output is correct
23 Correct 3 ms 5036 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 4 ms 5076 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 4 ms 5092 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 4 ms 5204 KB Output is correct
30 Correct 5 ms 5108 KB Output is correct
31 Correct 4 ms 5076 KB Output is correct
32 Correct 3 ms 5032 KB Output is correct
33 Correct 7 ms 5076 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 4 ms 5076 KB Output is correct
36 Correct 4 ms 5040 KB Output is correct
37 Correct 3 ms 5132 KB Output is correct
38 Correct 5 ms 5076 KB Output is correct
39 Correct 4 ms 5076 KB Output is correct
40 Correct 4 ms 5164 KB Output is correct
41 Correct 4 ms 5076 KB Output is correct
42 Correct 5 ms 5076 KB Output is correct
43 Correct 4 ms 5076 KB Output is correct
44 Correct 5 ms 5076 KB Output is correct
45 Correct 4 ms 5036 KB Output is correct
46 Correct 4 ms 5076 KB Output is correct
47 Correct 3 ms 5036 KB Output is correct
48 Correct 5 ms 5164 KB Output is correct
49 Correct 4 ms 5204 KB Output is correct
50 Correct 5 ms 5076 KB Output is correct
51 Correct 4 ms 5076 KB Output is correct
52 Correct 7 ms 5204 KB Output is correct
53 Correct 7 ms 5076 KB Output is correct
54 Correct 4 ms 5120 KB Output is correct
55 Correct 4 ms 5036 KB Output is correct
56 Correct 5 ms 5036 KB Output is correct
57 Correct 7 ms 5160 KB Output is correct
58 Correct 7 ms 5076 KB Output is correct
59 Correct 4 ms 5076 KB Output is correct
60 Correct 4 ms 5164 KB Output is correct
61 Correct 4 ms 5076 KB Output is correct
62 Correct 4 ms 5204 KB Output is correct
63 Correct 5 ms 5076 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4968 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 5024 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 3 ms 5028 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 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 4 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 4 ms 5020 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 5024 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 6 ms 5016 KB Output is correct
23 Correct 3 ms 5036 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 4 ms 5076 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 4 ms 5092 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 4 ms 5204 KB Output is correct
30 Correct 5 ms 5108 KB Output is correct
31 Correct 4 ms 5076 KB Output is correct
32 Correct 3 ms 5032 KB Output is correct
33 Correct 7 ms 5076 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 4 ms 5076 KB Output is correct
36 Correct 4 ms 5040 KB Output is correct
37 Correct 3 ms 5132 KB Output is correct
38 Correct 5 ms 5076 KB Output is correct
39 Correct 4 ms 5076 KB Output is correct
40 Correct 4 ms 5164 KB Output is correct
41 Correct 4 ms 5076 KB Output is correct
42 Correct 5 ms 5076 KB Output is correct
43 Correct 4 ms 5076 KB Output is correct
44 Correct 5 ms 5076 KB Output is correct
45 Correct 4 ms 5036 KB Output is correct
46 Correct 4 ms 5076 KB Output is correct
47 Correct 3 ms 5036 KB Output is correct
48 Correct 5 ms 5164 KB Output is correct
49 Correct 4 ms 5204 KB Output is correct
50 Correct 5 ms 5076 KB Output is correct
51 Correct 4 ms 5076 KB Output is correct
52 Correct 7 ms 5204 KB Output is correct
53 Correct 7 ms 5076 KB Output is correct
54 Correct 4 ms 5120 KB Output is correct
55 Correct 4 ms 5036 KB Output is correct
56 Correct 5 ms 5036 KB Output is correct
57 Correct 7 ms 5160 KB Output is correct
58 Correct 7 ms 5076 KB Output is correct
59 Correct 4 ms 5076 KB Output is correct
60 Correct 4 ms 5164 KB Output is correct
61 Correct 4 ms 5076 KB Output is correct
62 Correct 4 ms 5204 KB Output is correct
63 Correct 5 ms 5076 KB Output is correct
64 Correct 178 ms 15608 KB Output is correct
65 Correct 124 ms 15564 KB Output is correct
66 Correct 190 ms 15648 KB Output is correct
67 Correct 186 ms 15720 KB Output is correct
68 Correct 173 ms 15656 KB Output is correct
69 Correct 180 ms 15648 KB Output is correct
70 Correct 170 ms 15652 KB Output is correct
71 Correct 148 ms 15664 KB Output is correct
72 Correct 218 ms 15628 KB Output is correct
73 Correct 214 ms 28276 KB Output is correct
74 Correct 164 ms 28216 KB Output is correct
75 Correct 195 ms 15552 KB Output is correct
76 Correct 159 ms 15548 KB Output is correct
77 Correct 150 ms 15452 KB Output is correct
78 Correct 152 ms 15512 KB Output is correct
79 Correct 161 ms 15540 KB Output is correct
80 Correct 161 ms 15532 KB Output is correct
81 Correct 125 ms 15856 KB Output is correct
82 Correct 162 ms 15676 KB Output is correct
83 Correct 199 ms 20716 KB Output is correct
84 Correct 151 ms 22896 KB Output is correct
85 Correct 181 ms 22704 KB Output is correct
86 Correct 140 ms 17004 KB Output is correct
87 Correct 143 ms 16368 KB Output is correct
88 Correct 151 ms 16880 KB Output is correct
89 Correct 145 ms 16904 KB Output is correct
90 Correct 134 ms 16588 KB Output is correct
91 Correct 136 ms 16912 KB Output is correct
92 Correct 118 ms 17288 KB Output is correct
93 Correct 116 ms 19520 KB Output is correct
94 Correct 119 ms 21172 KB Output is correct
95 Correct 127 ms 19940 KB Output is correct
96 Correct 128 ms 18264 KB Output is correct
97 Correct 118 ms 16732 KB Output is correct
98 Correct 127 ms 16176 KB Output is correct
99 Correct 139 ms 16004 KB Output is correct
100 Correct 123 ms 19168 KB Output is correct
101 Correct 136 ms 17248 KB Output is correct
102 Correct 117 ms 16416 KB Output is correct
103 Correct 122 ms 16116 KB Output is correct
104 Correct 76 ms 16380 KB Output is correct
105 Correct 158 ms 24976 KB Output is correct
106 Correct 69 ms 16256 KB Output is correct
107 Correct 78 ms 16192 KB Output is correct
108 Correct 138 ms 29028 KB Output is correct
109 Correct 88 ms 16336 KB Output is correct
110 Correct 145 ms 29260 KB Output is correct
111 Correct 108 ms 15604 KB Output is correct