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Submission #892943

# Submission time Handle Problem Language Result Execution time Memory
892943 2023-12-26T08:23:57 Z Alcabel Power Plant (JOI20_power) C++17
100 / 100
 106 ms 29588 KB 
#include <bits/stdc++.h>
using namespace std;

const int maxn = 2e5;
vector<int> g[maxn];
int dp[maxn][2];
string s;

int dfs(int v, int p) {
    int res = 0;
    for (const int& u : g[v]) {
        if (u != p) {
            res = max(res, dfs(u, v));
            dp[v][0] = max(dp[v][0], max(dp[u][1], max(dp[u][0] - 2 * (s[u] - '0'), (s[u] - '0'))));
            dp[v][1] += max(dp[u][1], max(dp[u][0] - 2 * (s[u] - '0'), (s[u] - '0')));
        }
    }
    dp[v][0] += (s[v] - '0');
    dp[v][1] -= (s[v] - '0');
    // cerr << "v: " << v << ", 0: " << dp[v][0] << ", 1: " << dp[v][1] << '\n';
    res = max(res, max(dp[v][0], dp[v][1]));
    return res;
}

void solve() {
    int n;
    cin >> n;
    for (int i = 0; i < n - 1; ++i) {
        int v, u;
        cin >> v >> u;
        --v, --u;
        g[v].emplace_back(u);
        g[u].emplace_back(v);
    }
    cin >> s;
    cout << dfs(0, -1) << '\n';
}

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

#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    int T = 1;
    cin >> T;
    while (T--) {
        solve();
        cerr << "-----------\n";
        cout << "-----------\n";
    }
#else
    int T = 1;
    // cin >> T;
    while (T--) {
        solve();
    }
#endif

    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6548 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 2 ms 6488 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6544 KB Output is correct
20 Correct 2 ms 6488 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6548 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 2 ms 6488 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6544 KB Output is correct
20 Correct 2 ms 6488 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6564 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 2 ms 6492 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 2 ms 6492 KB Output is correct
28 Correct 2 ms 6492 KB Output is correct
29 Correct 2 ms 6748 KB Output is correct
30 Correct 2 ms 6492 KB Output is correct
31 Correct 2 ms 6492 KB Output is correct
32 Correct 2 ms 6492 KB Output is correct
33 Correct 2 ms 6492 KB Output is correct
34 Correct 2 ms 6492 KB Output is correct
35 Correct 2 ms 6492 KB Output is correct
36 Correct 2 ms 6492 KB Output is correct
37 Correct 2 ms 6492 KB Output is correct
38 Correct 2 ms 6492 KB Output is correct
39 Correct 2 ms 6492 KB Output is correct
40 Correct 2 ms 6492 KB Output is correct
41 Correct 2 ms 6712 KB Output is correct
42 Correct 2 ms 6492 KB Output is correct
43 Correct 2 ms 6576 KB Output is correct
44 Correct 2 ms 6576 KB Output is correct
45 Correct 2 ms 6492 KB Output is correct
46 Correct 2 ms 6492 KB Output is correct
47 Correct 2 ms 6588 KB Output is correct
48 Correct 2 ms 6580 KB Output is correct
49 Correct 2 ms 6492 KB Output is correct
50 Correct 2 ms 6580 KB Output is correct
51 Correct 2 ms 6560 KB Output is correct
52 Correct 2 ms 6492 KB Output is correct
53 Correct 2 ms 6492 KB Output is correct
54 Correct 2 ms 6492 KB Output is correct
55 Correct 2 ms 6560 KB Output is correct
56 Correct 2 ms 6496 KB Output is correct
57 Correct 2 ms 6628 KB Output is correct
58 Correct 2 ms 6492 KB Output is correct
59 Correct 2 ms 6492 KB Output is correct
60 Correct 2 ms 6496 KB Output is correct
61 Correct 2 ms 6492 KB Output is correct
62 Correct 2 ms 6752 KB Output is correct
63 Correct 2 ms 6492 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 6492 KB Output is correct
5 Correct 2 ms 6548 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 2 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 2 ms 6492 KB Output is correct
14 Correct 2 ms 6488 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 2 ms 6492 KB Output is correct
17 Correct 2 ms 6492 KB Output is correct
18 Correct 2 ms 6492 KB Output is correct
19 Correct 2 ms 6544 KB Output is correct
20 Correct 2 ms 6488 KB Output is correct
21 Correct 2 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 2 ms 6564 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 2 ms 6492 KB Output is correct
26 Correct 2 ms 6492 KB Output is correct
27 Correct 2 ms 6492 KB Output is correct
28 Correct 2 ms 6492 KB Output is correct
29 Correct 2 ms 6748 KB Output is correct
30 Correct 2 ms 6492 KB Output is correct
31 Correct 2 ms 6492 KB Output is correct
32 Correct 2 ms 6492 KB Output is correct
33 Correct 2 ms 6492 KB Output is correct
34 Correct 2 ms 6492 KB Output is correct
35 Correct 2 ms 6492 KB Output is correct
36 Correct 2 ms 6492 KB Output is correct
37 Correct 2 ms 6492 KB Output is correct
38 Correct 2 ms 6492 KB Output is correct
39 Correct 2 ms 6492 KB Output is correct
40 Correct 2 ms 6492 KB Output is correct
41 Correct 2 ms 6712 KB Output is correct
42 Correct 2 ms 6492 KB Output is correct
43 Correct 2 ms 6576 KB Output is correct
44 Correct 2 ms 6576 KB Output is correct
45 Correct 2 ms 6492 KB Output is correct
46 Correct 2 ms 6492 KB Output is correct
47 Correct 2 ms 6588 KB Output is correct
48 Correct 2 ms 6580 KB Output is correct
49 Correct 2 ms 6492 KB Output is correct
50 Correct 2 ms 6580 KB Output is correct
51 Correct 2 ms 6560 KB Output is correct
52 Correct 2 ms 6492 KB Output is correct
53 Correct 2 ms 6492 KB Output is correct
54 Correct 2 ms 6492 KB Output is correct
55 Correct 2 ms 6560 KB Output is correct
56 Correct 2 ms 6496 KB Output is correct
57 Correct 2 ms 6628 KB Output is correct
58 Correct 2 ms 6492 KB Output is correct
59 Correct 2 ms 6492 KB Output is correct
60 Correct 2 ms 6496 KB Output is correct
61 Correct 2 ms 6492 KB Output is correct
62 Correct 2 ms 6752 KB Output is correct
63 Correct 2 ms 6492 KB Output is correct
64 Correct 86 ms 16068 KB Output is correct
65 Correct 63 ms 16116 KB Output is correct
66 Correct 60 ms 15996 KB Output is correct
67 Correct 67 ms 16044 KB Output is correct
68 Correct 75 ms 16012 KB Output is correct
69 Correct 58 ms 15980 KB Output is correct
70 Correct 64 ms 16032 KB Output is correct
71 Correct 66 ms 16028 KB Output is correct
72 Correct 60 ms 16016 KB Output is correct
73 Correct 78 ms 28560 KB Output is correct
74 Correct 97 ms 28556 KB Output is correct
75 Correct 59 ms 15928 KB Output is correct
76 Correct 61 ms 15932 KB Output is correct
77 Correct 80 ms 15964 KB Output is correct
78 Correct 61 ms 15984 KB Output is correct
79 Correct 80 ms 15944 KB Output is correct
80 Correct 60 ms 15924 KB Output is correct
81 Correct 67 ms 16328 KB Output is correct
82 Correct 66 ms 16172 KB Output is correct
83 Correct 74 ms 21144 KB Output is correct
84 Correct 78 ms 23152 KB Output is correct
85 Correct 93 ms 22944 KB Output is correct
86 Correct 66 ms 17300 KB Output is correct
87 Correct 66 ms 16692 KB Output is correct
88 Correct 86 ms 17104 KB Output is correct
89 Correct 70 ms 17308 KB Output is correct
90 Correct 71 ms 17140 KB Output is correct
91 Correct 102 ms 17148 KB Output is correct
92 Correct 73 ms 17560 KB Output is correct
93 Correct 106 ms 20068 KB Output is correct
94 Correct 82 ms 21708 KB Output is correct
95 Correct 66 ms 20488 KB Output is correct
96 Correct 69 ms 18688 KB Output is correct
97 Correct 71 ms 16944 KB Output is correct
98 Correct 66 ms 16560 KB Output is correct
99 Correct 87 ms 16900 KB Output is correct
100 Correct 65 ms 19580 KB Output is correct
101 Correct 71 ms 17556 KB Output is correct
102 Correct 63 ms 16740 KB Output is correct
103 Correct 63 ms 16564 KB Output is correct
104 Correct 44 ms 16836 KB Output is correct
105 Correct 84 ms 25492 KB Output is correct
106 Correct 43 ms 16836 KB Output is correct
107 Correct 47 ms 16840 KB Output is correct
108 Correct 84 ms 29328 KB Output is correct
109 Correct 61 ms 16840 KB Output is correct
110 Correct 84 ms 29588 KB Output is correct
111 Correct 59 ms 15936 KB Output is correct