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Submission #824986

# Submission time Handle Problem Language Result Execution time Memory
824986 2023-08-14T12:52:30 Z phoenix Power Plant (JOI20_power) C++17
100 / 100
 111 ms 31552 KB 
#include<bits/stdc++.h>

using namespace std;
using ll = long long;

const int N = 2e5 + 10;
vector<int> g[N];
int dp[N];
int n;
string s;
int res;
void dfs(int v, int p) {
    int sum = 0, mx = 0;
    for(int to : g[v]) {
        if(to == p) continue;
        dfs(to, v);
        mx = max(mx, dp[to]);
        sum += max(dp[to], 0);
    }
    dp[v] = max(s[v - 1] - '0', sum - (s[v - 1] - '0'));
    res = max(res, dp[v]);
    if(s[v - 1] == '1') 
        res = max(res, mx + 1);
}

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    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;
    dfs(1, 1);
    // for(int i = 1; i <= n; i++) {
    //     cout << dp[i] << ' ';
    // }
    // cout << '\n';
    cout << res;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 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 2 ms 5028 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 5024 KB Output is correct
16 Correct 2 ms 5024 KB Output is correct
17 Correct 2 ms 5028 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 3 ms 4916 KB Output is correct
20 Correct 2 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 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 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 2 ms 5028 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 5024 KB Output is correct
16 Correct 2 ms 5024 KB Output is correct
17 Correct 2 ms 5028 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 3 ms 4916 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 3 ms 5084 KB Output is correct
24 Correct 3 ms 5076 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 5076 KB Output is correct
29 Correct 3 ms 5204 KB Output is correct
30 Correct 3 ms 5216 KB Output is correct
31 Correct 3 ms 5076 KB Output is correct
32 Correct 3 ms 5036 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 3 ms 5036 KB Output is correct
36 Correct 3 ms 5036 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 3 ms 5076 KB Output is correct
40 Correct 3 ms 5076 KB Output is correct
41 Correct 3 ms 5076 KB Output is correct
42 Correct 3 ms 5076 KB Output is correct
43 Correct 3 ms 5036 KB Output is correct
44 Correct 3 ms 5076 KB Output is correct
45 Correct 3 ms 5088 KB Output is correct
46 Correct 3 ms 5040 KB Output is correct
47 Correct 3 ms 5076 KB Output is correct
48 Correct 3 ms 5204 KB Output is correct
49 Correct 3 ms 5204 KB Output is correct
50 Correct 3 ms 5168 KB Output is correct
51 Correct 3 ms 5032 KB Output is correct
52 Correct 3 ms 5076 KB Output is correct
53 Correct 3 ms 5216 KB Output is correct
54 Correct 3 ms 5076 KB Output is correct
55 Correct 3 ms 5076 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 3 ms 5076 KB Output is correct
60 Correct 3 ms 5164 KB Output is correct
61 Correct 3 ms 5076 KB Output is correct
62 Correct 3 ms 5204 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 3 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 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 2 ms 5028 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 5024 KB Output is correct
16 Correct 2 ms 5024 KB Output is correct
17 Correct 2 ms 5028 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 3 ms 4916 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 3 ms 5084 KB Output is correct
24 Correct 3 ms 5076 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 5076 KB Output is correct
29 Correct 3 ms 5204 KB Output is correct
30 Correct 3 ms 5216 KB Output is correct
31 Correct 3 ms 5076 KB Output is correct
32 Correct 3 ms 5036 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 3 ms 5036 KB Output is correct
36 Correct 3 ms 5036 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 3 ms 5076 KB Output is correct
40 Correct 3 ms 5076 KB Output is correct
41 Correct 3 ms 5076 KB Output is correct
42 Correct 3 ms 5076 KB Output is correct
43 Correct 3 ms 5036 KB Output is correct
44 Correct 3 ms 5076 KB Output is correct
45 Correct 3 ms 5088 KB Output is correct
46 Correct 3 ms 5040 KB Output is correct
47 Correct 3 ms 5076 KB Output is correct
48 Correct 3 ms 5204 KB Output is correct
49 Correct 3 ms 5204 KB Output is correct
50 Correct 3 ms 5168 KB Output is correct
51 Correct 3 ms 5032 KB Output is correct
52 Correct 3 ms 5076 KB Output is correct
53 Correct 3 ms 5216 KB Output is correct
54 Correct 3 ms 5076 KB Output is correct
55 Correct 3 ms 5076 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 3 ms 5076 KB Output is correct
60 Correct 3 ms 5164 KB Output is correct
61 Correct 3 ms 5076 KB Output is correct
62 Correct 3 ms 5204 KB Output is correct
63 Correct 3 ms 5076 KB Output is correct
64 Correct 79 ms 15112 KB Output is correct
65 Correct 73 ms 15164 KB Output is correct
66 Correct 74 ms 15136 KB Output is correct
67 Correct 75 ms 15136 KB Output is correct
68 Correct 77 ms 15124 KB Output is correct
69 Correct 71 ms 15172 KB Output is correct
70 Correct 67 ms 15128 KB Output is correct
71 Correct 67 ms 15088 KB Output is correct
72 Correct 58 ms 15092 KB Output is correct
73 Correct 93 ms 30360 KB Output is correct
74 Correct 81 ms 30292 KB Output is correct
75 Correct 92 ms 15020 KB Output is correct
76 Correct 61 ms 15048 KB Output is correct
77 Correct 66 ms 14996 KB Output is correct
78 Correct 67 ms 14988 KB Output is correct
79 Correct 76 ms 14996 KB Output is correct
80 Correct 80 ms 15024 KB Output is correct
81 Correct 55 ms 15532 KB Output is correct
82 Correct 61 ms 15184 KB Output is correct
83 Correct 81 ms 21316 KB Output is correct
84 Correct 77 ms 23804 KB Output is correct
85 Correct 97 ms 23440 KB Output is correct
86 Correct 68 ms 16712 KB Output is correct
87 Correct 70 ms 16092 KB Output is correct
88 Correct 77 ms 16456 KB Output is correct
89 Correct 67 ms 16536 KB Output is correct
90 Correct 64 ms 16224 KB Output is correct
91 Correct 78 ms 16560 KB Output is correct
92 Correct 69 ms 16948 KB Output is correct
93 Correct 65 ms 19836 KB Output is correct
94 Correct 74 ms 21952 KB Output is correct
95 Correct 88 ms 20292 KB Output is correct
96 Correct 62 ms 18180 KB Output is correct
97 Correct 65 ms 16332 KB Output is correct
98 Correct 60 ms 15776 KB Output is correct
99 Correct 59 ms 15516 KB Output is correct
100 Correct 76 ms 19260 KB Output is correct
101 Correct 62 ms 16844 KB Output is correct
102 Correct 72 ms 15952 KB Output is correct
103 Correct 75 ms 15764 KB Output is correct
104 Correct 42 ms 15992 KB Output is correct
105 Correct 84 ms 26500 KB Output is correct
106 Correct 50 ms 15912 KB Output is correct
107 Correct 44 ms 15880 KB Output is correct
108 Correct 111 ms 31288 KB Output is correct
109 Correct 60 ms 16028 KB Output is correct
110 Correct 88 ms 31552 KB Output is correct
111 Correct 60 ms 15004 KB Output is correct