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Submission #359346

# Submission time Handle Problem Language Result Execution time Memory
359346 2021-01-26T22:41:05 Z eyangch Power Plant (JOI20_power) C++17
100 / 100
 188 ms 25452 KB 
#include <bits/stdc++.h>
#define endl "\n"

using namespace std;

int N;
vector<int> graph[200000];
char s[200001];
int ans = 0;

int dfs(int id, int par){
    int p = s[id] - '0', ret = p, c = 0, mxc = 0;
    for(int i : graph[id]){
        if(i == par) continue;
        int cur = dfs(i, id);
        if(cur == 0) continue;
        c++;
        mxc = max(mxc, cur);
        ret += cur;
    }
    if(p && c > 0){
        ans = (c-1 ? max({ans, ret-2, mxc+1}) : max(ans, ret));
        ret -= 2;
    }
    ans = max(ans, ret);
    return max(p, ret);
}

int32_t main(){
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> N;
    for(int i = 0; i < N-1; i++){
        int a, b; cin >> a >> b;
        graph[a-1].push_back(b-1);
        graph[b-1].push_back(a-1);
    }
    cin >> s;
    dfs(0, 0);
    cout << ans << endl;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 3 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 3 ms 4972 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 3 ms 4972 KB Output is correct
8 Correct 3 ms 4972 KB Output is correct
9 Correct 3 ms 4972 KB Output is correct
10 Correct 3 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 4 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 4 ms 4972 KB Output is correct
15 Correct 4 ms 4972 KB Output is correct
16 Correct 4 ms 4972 KB Output is correct
17 Correct 4 ms 4972 KB Output is correct
18 Correct 4 ms 5092 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct
21 Correct 3 ms 4972 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 3 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 3 ms 4972 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 3 ms 4972 KB Output is correct
8 Correct 3 ms 4972 KB Output is correct
9 Correct 3 ms 4972 KB Output is correct
10 Correct 3 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 4 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 4 ms 4972 KB Output is correct
15 Correct 4 ms 4972 KB Output is correct
16 Correct 4 ms 4972 KB Output is correct
17 Correct 4 ms 4972 KB Output is correct
18 Correct 4 ms 5092 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct
21 Correct 3 ms 4972 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5100 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct
28 Correct 4 ms 5100 KB Output is correct
29 Correct 4 ms 5228 KB Output is correct
30 Correct 4 ms 5228 KB Output is correct
31 Correct 4 ms 5100 KB Output is correct
32 Correct 5 ms 5100 KB Output is correct
33 Correct 4 ms 5100 KB Output is correct
34 Correct 4 ms 5100 KB Output is correct
35 Correct 4 ms 5100 KB Output is correct
36 Correct 4 ms 5100 KB Output is correct
37 Correct 4 ms 5100 KB Output is correct
38 Correct 4 ms 5100 KB Output is correct
39 Correct 4 ms 5100 KB Output is correct
40 Correct 4 ms 5100 KB Output is correct
41 Correct 4 ms 5100 KB Output is correct
42 Correct 4 ms 5100 KB Output is correct
43 Correct 4 ms 5100 KB Output is correct
44 Correct 5 ms 5100 KB Output is correct
45 Correct 4 ms 5100 KB Output is correct
46 Correct 4 ms 5100 KB Output is correct
47 Correct 4 ms 5100 KB Output is correct
48 Correct 4 ms 5228 KB Output is correct
49 Correct 4 ms 5228 KB Output is correct
50 Correct 5 ms 5100 KB Output is correct
51 Correct 4 ms 5100 KB Output is correct
52 Correct 4 ms 5100 KB Output is correct
53 Correct 4 ms 5100 KB Output is correct
54 Correct 4 ms 5100 KB Output is correct
55 Correct 4 ms 5100 KB Output is correct
56 Correct 4 ms 5100 KB Output is correct
57 Correct 4 ms 5228 KB Output is correct
58 Correct 4 ms 5100 KB Output is correct
59 Correct 5 ms 5100 KB Output is correct
60 Correct 4 ms 5228 KB Output is correct
61 Correct 5 ms 5100 KB Output is correct
62 Correct 4 ms 5228 KB Output is correct
63 Correct 4 ms 5100 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 3 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 3 ms 4972 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 3 ms 4972 KB Output is correct
8 Correct 3 ms 4972 KB Output is correct
9 Correct 3 ms 4972 KB Output is correct
10 Correct 3 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 4 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 4 ms 4972 KB Output is correct
15 Correct 4 ms 4972 KB Output is correct
16 Correct 4 ms 4972 KB Output is correct
17 Correct 4 ms 4972 KB Output is correct
18 Correct 4 ms 5092 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct
21 Correct 3 ms 4972 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5100 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct
28 Correct 4 ms 5100 KB Output is correct
29 Correct 4 ms 5228 KB Output is correct
30 Correct 4 ms 5228 KB Output is correct
31 Correct 4 ms 5100 KB Output is correct
32 Correct 5 ms 5100 KB Output is correct
33 Correct 4 ms 5100 KB Output is correct
34 Correct 4 ms 5100 KB Output is correct
35 Correct 4 ms 5100 KB Output is correct
36 Correct 4 ms 5100 KB Output is correct
37 Correct 4 ms 5100 KB Output is correct
38 Correct 4 ms 5100 KB Output is correct
39 Correct 4 ms 5100 KB Output is correct
40 Correct 4 ms 5100 KB Output is correct
41 Correct 4 ms 5100 KB Output is correct
42 Correct 4 ms 5100 KB Output is correct
43 Correct 4 ms 5100 KB Output is correct
44 Correct 5 ms 5100 KB Output is correct
45 Correct 4 ms 5100 KB Output is correct
46 Correct 4 ms 5100 KB Output is correct
47 Correct 4 ms 5100 KB Output is correct
48 Correct 4 ms 5228 KB Output is correct
49 Correct 4 ms 5228 KB Output is correct
50 Correct 5 ms 5100 KB Output is correct
51 Correct 4 ms 5100 KB Output is correct
52 Correct 4 ms 5100 KB Output is correct
53 Correct 4 ms 5100 KB Output is correct
54 Correct 4 ms 5100 KB Output is correct
55 Correct 4 ms 5100 KB Output is correct
56 Correct 4 ms 5100 KB Output is correct
57 Correct 4 ms 5228 KB Output is correct
58 Correct 4 ms 5100 KB Output is correct
59 Correct 5 ms 5100 KB Output is correct
60 Correct 4 ms 5228 KB Output is correct
61 Correct 5 ms 5100 KB Output is correct
62 Correct 4 ms 5228 KB Output is correct
63 Correct 4 ms 5100 KB Output is correct
64 Correct 158 ms 11756 KB Output is correct
65 Correct 160 ms 11628 KB Output is correct
66 Correct 162 ms 11628 KB Output is correct
67 Correct 159 ms 11756 KB Output is correct
68 Correct 155 ms 11628 KB Output is correct
69 Correct 153 ms 11628 KB Output is correct
70 Correct 151 ms 11628 KB Output is correct
71 Correct 157 ms 11628 KB Output is correct
72 Correct 151 ms 11756 KB Output is correct
73 Correct 182 ms 24300 KB Output is correct
74 Correct 183 ms 24428 KB Output is correct
75 Correct 159 ms 11756 KB Output is correct
76 Correct 153 ms 11636 KB Output is correct
77 Correct 165 ms 11884 KB Output is correct
78 Correct 163 ms 11628 KB Output is correct
79 Correct 162 ms 11628 KB Output is correct
80 Correct 160 ms 11628 KB Output is correct
81 Correct 128 ms 12004 KB Output is correct
82 Correct 143 ms 11880 KB Output is correct
83 Correct 168 ms 16876 KB Output is correct
84 Correct 171 ms 19052 KB Output is correct
85 Correct 167 ms 18668 KB Output is correct
86 Correct 162 ms 13036 KB Output is correct
87 Correct 158 ms 12524 KB Output is correct
88 Correct 147 ms 12908 KB Output is correct
89 Correct 147 ms 12908 KB Output is correct
90 Correct 144 ms 12780 KB Output is correct
91 Correct 147 ms 13036 KB Output is correct
92 Correct 153 ms 13364 KB Output is correct
93 Correct 148 ms 15792 KB Output is correct
94 Correct 139 ms 17384 KB Output is correct
95 Correct 140 ms 16232 KB Output is correct
96 Correct 145 ms 14316 KB Output is correct
97 Correct 142 ms 12908 KB Output is correct
98 Correct 141 ms 12268 KB Output is correct
99 Correct 147 ms 12012 KB Output is correct
100 Correct 145 ms 15256 KB Output is correct
101 Correct 153 ms 13312 KB Output is correct
102 Correct 144 ms 12476 KB Output is correct
103 Correct 152 ms 12268 KB Output is correct
104 Correct 95 ms 12512 KB Output is correct
105 Correct 179 ms 21100 KB Output is correct
106 Correct 90 ms 12384 KB Output is correct
107 Correct 89 ms 12384 KB Output is correct
108 Correct 188 ms 25228 KB Output is correct
109 Correct 90 ms 12384 KB Output is correct
110 Correct 180 ms 25452 KB Output is correct
111 Correct 146 ms 11628 KB Output is correct