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Submission #668687

# Submission time Handle Problem Language Result Execution time Memory
668687 2022-12-04T13:10:43 Z stevancv Power Plant (JOI20_power) C++14
100 / 100
 162 ms 33112 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 2e5 + 2;
const int inf = 2e9;
vector<int> g[N];
int dp[N][2];
int str[N];
void Dfs(int s, int e) {
    dp[s][0] = str[s];
    dp[s][1] = -inf;
    int sum = 0;
    for (int u : g[s]) if (u != e) {
        Dfs(u, s);
        sum += dp[u][0];
        smax(dp[s][1], dp[u][1] - str[s]);
        if (str[s] && dp[u][0]) smax(dp[s][1], dp[u][0] + 1);
    }
    smax(dp[s][0], sum - str[s]);
    int fs = sum;
    for (int u : g[s]) if (u != e) {
        if (str[s] || sum > dp[u][0]) fs += max(0, dp[u][1] - 2 - dp[u][0]);
    }
    smax(dp[s][0], fs - str[s]);
}
int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n; cin >> n;
    for (int i = 0; i < n - 1; i++) {
        int u, v;
        cin >> u >> v;
        u -= 1;
        v -= 1;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    string sr;
    cin >> sr;
    for (int i = 0; i < n; i++) str[i] = sr[i] - '0';
    Dfs(0, -1);
    int ans = -inf;
    for (int i = 0; i < n; i++) smax(ans, max(dp[i][0], dp[i][1]));
    cout << ans << en;
    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5020 KB Output is correct
2 Correct 3 ms 5024 KB Output is correct
3 Correct 3 ms 5020 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 5020 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4960 KB Output is correct
12 Correct 3 ms 5024 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4952 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 5024 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5012 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 5020 KB Output is correct
2 Correct 3 ms 5024 KB Output is correct
3 Correct 3 ms 5020 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 5020 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4960 KB Output is correct
12 Correct 3 ms 5024 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4952 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 5024 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5012 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 5 ms 5076 KB Output is correct
23 Correct 3 ms 5040 KB Output is correct
24 Correct 4 ms 5032 KB Output is correct
25 Correct 3 ms 5032 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 4 ms 5076 KB Output is correct
28 Correct 4 ms 5032 KB Output is correct
29 Correct 4 ms 5204 KB Output is correct
30 Correct 4 ms 5204 KB Output is correct
31 Correct 4 ms 5108 KB Output is correct
32 Correct 3 ms 5032 KB Output is correct
33 Correct 3 ms 5032 KB Output is correct
34 Correct 4 ms 5076 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 3 ms 5088 KB Output is correct
37 Correct 5 ms 5076 KB Output is correct
38 Correct 4 ms 5032 KB Output is correct
39 Correct 4 ms 5204 KB Output is correct
40 Correct 4 ms 5160 KB Output is correct
41 Correct 3 ms 5160 KB Output is correct
42 Correct 4 ms 5164 KB Output is correct
43 Correct 4 ms 5076 KB Output is correct
44 Correct 4 ms 5076 KB Output is correct
45 Correct 4 ms 5076 KB Output is correct
46 Correct 4 ms 5164 KB Output is correct
47 Correct 4 ms 5084 KB Output is correct
48 Correct 3 ms 5168 KB Output is correct
49 Correct 3 ms 5204 KB Output is correct
50 Correct 3 ms 5164 KB Output is correct
51 Correct 3 ms 5076 KB Output is correct
52 Correct 4 ms 5076 KB Output is correct
53 Correct 3 ms 5160 KB Output is correct
54 Correct 4 ms 5076 KB Output is correct
55 Correct 3 ms 5076 KB Output is correct
56 Correct 5 ms 5036 KB Output is correct
57 Correct 4 ms 5288 KB Output is correct
58 Correct 3 ms 5076 KB Output is correct
59 Correct 4 ms 5072 KB Output is correct
60 Correct 3 ms 5204 KB Output is correct
61 Correct 4 ms 5032 KB Output is correct
62 Correct 4 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 5020 KB Output is correct
2 Correct 3 ms 5024 KB Output is correct
3 Correct 3 ms 5020 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 5020 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4960 KB Output is correct
12 Correct 3 ms 5024 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4952 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 5024 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5012 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 5 ms 5076 KB Output is correct
23 Correct 3 ms 5040 KB Output is correct
24 Correct 4 ms 5032 KB Output is correct
25 Correct 3 ms 5032 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 4 ms 5076 KB Output is correct
28 Correct 4 ms 5032 KB Output is correct
29 Correct 4 ms 5204 KB Output is correct
30 Correct 4 ms 5204 KB Output is correct
31 Correct 4 ms 5108 KB Output is correct
32 Correct 3 ms 5032 KB Output is correct
33 Correct 3 ms 5032 KB Output is correct
34 Correct 4 ms 5076 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 3 ms 5088 KB Output is correct
37 Correct 5 ms 5076 KB Output is correct
38 Correct 4 ms 5032 KB Output is correct
39 Correct 4 ms 5204 KB Output is correct
40 Correct 4 ms 5160 KB Output is correct
41 Correct 3 ms 5160 KB Output is correct
42 Correct 4 ms 5164 KB Output is correct
43 Correct 4 ms 5076 KB Output is correct
44 Correct 4 ms 5076 KB Output is correct
45 Correct 4 ms 5076 KB Output is correct
46 Correct 4 ms 5164 KB Output is correct
47 Correct 4 ms 5084 KB Output is correct
48 Correct 3 ms 5168 KB Output is correct
49 Correct 3 ms 5204 KB Output is correct
50 Correct 3 ms 5164 KB Output is correct
51 Correct 3 ms 5076 KB Output is correct
52 Correct 4 ms 5076 KB Output is correct
53 Correct 3 ms 5160 KB Output is correct
54 Correct 4 ms 5076 KB Output is correct
55 Correct 3 ms 5076 KB Output is correct
56 Correct 5 ms 5036 KB Output is correct
57 Correct 4 ms 5288 KB Output is correct
58 Correct 3 ms 5076 KB Output is correct
59 Correct 4 ms 5072 KB Output is correct
60 Correct 3 ms 5204 KB Output is correct
61 Correct 4 ms 5032 KB Output is correct
62 Correct 4 ms 5204 KB Output is correct
63 Correct 3 ms 5076 KB Output is correct
64 Correct 119 ms 16784 KB Output is correct
65 Correct 128 ms 16672 KB Output is correct
66 Correct 120 ms 16760 KB Output is correct
67 Correct 133 ms 16732 KB Output is correct
68 Correct 120 ms 16664 KB Output is correct
69 Correct 115 ms 16768 KB Output is correct
70 Correct 119 ms 16780 KB Output is correct
71 Correct 125 ms 16820 KB Output is correct
72 Correct 120 ms 16784 KB Output is correct
73 Correct 139 ms 31864 KB Output is correct
74 Correct 154 ms 31848 KB Output is correct
75 Correct 119 ms 16560 KB Output is correct
76 Correct 113 ms 16648 KB Output is correct
77 Correct 122 ms 16572 KB Output is correct
78 Correct 123 ms 16596 KB Output is correct
79 Correct 126 ms 16768 KB Output is correct
80 Correct 137 ms 16600 KB Output is correct
81 Correct 94 ms 17088 KB Output is correct
82 Correct 109 ms 16912 KB Output is correct
83 Correct 133 ms 22916 KB Output is correct
84 Correct 162 ms 25576 KB Output is correct
85 Correct 142 ms 24996 KB Output is correct
86 Correct 125 ms 18336 KB Output is correct
87 Correct 124 ms 17648 KB Output is correct
88 Correct 134 ms 18092 KB Output is correct
89 Correct 110 ms 18084 KB Output is correct
90 Correct 107 ms 17804 KB Output is correct
91 Correct 113 ms 18064 KB Output is correct
92 Correct 121 ms 18568 KB Output is correct
93 Correct 142 ms 21472 KB Output is correct
94 Correct 109 ms 23600 KB Output is correct
95 Correct 111 ms 21844 KB Output is correct
96 Correct 113 ms 19736 KB Output is correct
97 Correct 120 ms 17948 KB Output is correct
98 Correct 119 ms 17324 KB Output is correct
99 Correct 105 ms 17032 KB Output is correct
100 Correct 135 ms 20860 KB Output is correct
101 Correct 112 ms 18624 KB Output is correct
102 Correct 124 ms 17540 KB Output is correct
103 Correct 114 ms 17268 KB Output is correct
104 Correct 71 ms 17616 KB Output is correct
105 Correct 144 ms 28112 KB Output is correct
106 Correct 77 ms 17492 KB Output is correct
107 Correct 75 ms 17516 KB Output is correct
108 Correct 147 ms 32788 KB Output is correct
109 Correct 81 ms 17576 KB Output is correct
110 Correct 149 ms 33112 KB Output is correct
111 Correct 105 ms 16648 KB Output is correct