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Submission #359345

# Submission time Handle Problem Language Result Execution time Memory
359345 2021-01-26T22:36:59 Z eyangch Power Plant (JOI20_power) C++17
100 / 100
 192 ms 28396 KB 
#include <bits/stdc++.h>
#define endl "\n"

using namespace std;

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

int dfs(int id, int par){
    assert(!vis[id]);
    vis[id] = true;
    int p = s[id] - '0';
    int ret = p;
    int c = 0;
    int 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){
        if(c == 1){
            ans = max(ans, ret);
            ret -= 2;
        }else{
            ret -= 2;
            ans = max(ans, max(ret, mxc+1));
        }
    }
    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 5100 KB Output is correct
2 Correct 6 ms 5100 KB Output is correct
3 Correct 4 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 5100 KB Output is correct
11 Correct 4 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 5112 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 5228 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 6 ms 5100 KB Output is correct
3 Correct 4 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 5100 KB Output is correct
11 Correct 4 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 5112 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 5228 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 5 ms 5120 KB Output is correct
23 Correct 5 ms 5112 KB Output is correct
24 Correct 5 ms 5100 KB Output is correct
25 Correct 5 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 5 ms 5228 KB Output is correct
30 Correct 5 ms 5228 KB Output is correct
31 Correct 4 ms 5100 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 ms 5100 KB Output is correct
34 Correct 5 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 5 ms 5100 KB Output is correct
39 Correct 5 ms 5228 KB Output is correct
40 Correct 4 ms 5100 KB Output is correct
41 Correct 5 ms 5228 KB Output is correct
42 Correct 6 ms 5100 KB Output is correct
43 Correct 5 ms 5100 KB Output is correct
44 Correct 4 ms 5100 KB Output is correct
45 Correct 5 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 5 ms 5248 KB Output is correct
50 Correct 4 ms 5240 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 5 ms 5248 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 4 ms 5100 KB Output is correct
62 Correct 5 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 5100 KB Output is correct
2 Correct 6 ms 5100 KB Output is correct
3 Correct 4 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 4 ms 5100 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 4 ms 5100 KB Output is correct
10 Correct 4 ms 5100 KB Output is correct
11 Correct 4 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 5112 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 5228 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 5 ms 5120 KB Output is correct
23 Correct 5 ms 5112 KB Output is correct
24 Correct 5 ms 5100 KB Output is correct
25 Correct 5 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 5 ms 5228 KB Output is correct
30 Correct 5 ms 5228 KB Output is correct
31 Correct 4 ms 5100 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 ms 5100 KB Output is correct
34 Correct 5 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 5 ms 5100 KB Output is correct
39 Correct 5 ms 5228 KB Output is correct
40 Correct 4 ms 5100 KB Output is correct
41 Correct 5 ms 5228 KB Output is correct
42 Correct 6 ms 5100 KB Output is correct
43 Correct 5 ms 5100 KB Output is correct
44 Correct 4 ms 5100 KB Output is correct
45 Correct 5 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 5 ms 5248 KB Output is correct
50 Correct 4 ms 5240 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 5 ms 5248 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 4 ms 5100 KB Output is correct
62 Correct 5 ms 5228 KB Output is correct
63 Correct 4 ms 5100 KB Output is correct
64 Correct 165 ms 13164 KB Output is correct
65 Correct 164 ms 12908 KB Output is correct
66 Correct 166 ms 12908 KB Output is correct
67 Correct 163 ms 13036 KB Output is correct
68 Correct 160 ms 12908 KB Output is correct
69 Correct 164 ms 12908 KB Output is correct
70 Correct 179 ms 12908 KB Output is correct
71 Correct 161 ms 12908 KB Output is correct
72 Correct 161 ms 12908 KB Output is correct
73 Correct 186 ms 25708 KB Output is correct
74 Correct 190 ms 27116 KB Output is correct
75 Correct 176 ms 14572 KB Output is correct
76 Correct 166 ms 14444 KB Output is correct
77 Correct 175 ms 14444 KB Output is correct
78 Correct 171 ms 14572 KB Output is correct
79 Correct 174 ms 14436 KB Output is correct
80 Correct 173 ms 14564 KB Output is correct
81 Correct 136 ms 14820 KB Output is correct
82 Correct 152 ms 14568 KB Output is correct
83 Correct 174 ms 19664 KB Output is correct
84 Correct 175 ms 21868 KB Output is correct
85 Correct 179 ms 21612 KB Output is correct
86 Correct 170 ms 15852 KB Output is correct
87 Correct 164 ms 15212 KB Output is correct
88 Correct 158 ms 15724 KB Output is correct
89 Correct 159 ms 15724 KB Output is correct
90 Correct 162 ms 15536 KB Output is correct
91 Correct 151 ms 15852 KB Output is correct
92 Correct 155 ms 16108 KB Output is correct
93 Correct 151 ms 18408 KB Output is correct
94 Correct 145 ms 20196 KB Output is correct
95 Correct 142 ms 18920 KB Output is correct
96 Correct 151 ms 17132 KB Output is correct
97 Correct 146 ms 15684 KB Output is correct
98 Correct 150 ms 15012 KB Output is correct
99 Correct 175 ms 14956 KB Output is correct
100 Correct 151 ms 18028 KB Output is correct
101 Correct 154 ms 15980 KB Output is correct
102 Correct 144 ms 15340 KB Output is correct
103 Correct 156 ms 15212 KB Output is correct
104 Correct 101 ms 15328 KB Output is correct
105 Correct 182 ms 23916 KB Output is correct
106 Correct 96 ms 15072 KB Output is correct
107 Correct 96 ms 15200 KB Output is correct
108 Correct 192 ms 27928 KB Output is correct
109 Correct 92 ms 15328 KB Output is correct
110 Correct 188 ms 28396 KB Output is correct
111 Correct 156 ms 14444 KB Output is correct