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답안 #478386

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
478386 2021-10-07T06:57:13 Z jesus_coconut Power Plant (JOI20_power) C++17
100 / 100
 210 ms 28064 KB 
#include <bits/stdc++.h>
#define F first
#define S second
#define all(a) begin(a), end(a)


using namespace std;

int const N = 200005;

int n;
vector<int> adj[N];
string s;

void input() {
  cin >> n;
  for (int i = 0; i < n - 1; ++i) {
    int a, b;
    cin >> a >> b;
    --a; --b;
    adj[a].push_back(b);
    adj[b].push_back(a);
  }
  cin >> s;
}

int ans = 0;

int dp(int ver, int par) {
  int ret = s[ver] == '1';
  int suma = 0;
  for (auto u : adj[ver]) if (u != par) {
    int a = dp(u, ver);
    if (a > 0) suma += a;
    if (s[ver] == '1') {
      ans = max(ans, a + 1);
    }
  }
  ret = max(ret, suma - (s[ver] == '1'));
  ans = max(ans, ret);
  return ret;
}

void solve() {
  dp(0, -1);
  cout << ans << '\n';
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);

  input();
  solve();

  return 0;
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5076 KB Output is correct
2 Correct 3 ms 5016 KB Output is correct
3 Correct 3 ms 4944 KB Output is correct
4 Correct 3 ms 5016 KB Output is correct
5 Correct 3 ms 4944 KB Output is correct
6 Correct 3 ms 4944 KB Output is correct
7 Correct 3 ms 4944 KB Output is correct
8 Correct 3 ms 4944 KB Output is correct
9 Correct 3 ms 4944 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 3 ms 4944 KB Output is correct
12 Correct 3 ms 4944 KB Output is correct
13 Correct 3 ms 4944 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4944 KB Output is correct
16 Correct 3 ms 4944 KB Output is correct
17 Correct 3 ms 5016 KB Output is correct
18 Correct 3 ms 4944 KB Output is correct
19 Correct 4 ms 4960 KB Output is correct
20 Correct 4 ms 5016 KB Output is correct
21 Correct 3 ms 4944 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5076 KB Output is correct
2 Correct 3 ms 5016 KB Output is correct
3 Correct 3 ms 4944 KB Output is correct
4 Correct 3 ms 5016 KB Output is correct
5 Correct 3 ms 4944 KB Output is correct
6 Correct 3 ms 4944 KB Output is correct
7 Correct 3 ms 4944 KB Output is correct
8 Correct 3 ms 4944 KB Output is correct
9 Correct 3 ms 4944 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 3 ms 4944 KB Output is correct
12 Correct 3 ms 4944 KB Output is correct
13 Correct 3 ms 4944 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4944 KB Output is correct
16 Correct 3 ms 4944 KB Output is correct
17 Correct 3 ms 5016 KB Output is correct
18 Correct 3 ms 4944 KB Output is correct
19 Correct 4 ms 4960 KB Output is correct
20 Correct 4 ms 5016 KB Output is correct
21 Correct 3 ms 4944 KB Output is correct
22 Correct 4 ms 5072 KB Output is correct
23 Correct 4 ms 5024 KB Output is correct
24 Correct 5 ms 5072 KB Output is correct
25 Correct 4 ms 5072 KB Output is correct
26 Correct 4 ms 5024 KB Output is correct
27 Correct 4 ms 5072 KB Output is correct
28 Correct 4 ms 5072 KB Output is correct
29 Correct 4 ms 5200 KB Output is correct
30 Correct 4 ms 5072 KB Output is correct
31 Correct 4 ms 5072 KB Output is correct
32 Correct 4 ms 5072 KB Output is correct
33 Correct 4 ms 5072 KB Output is correct
34 Correct 4 ms 5072 KB Output is correct
35 Correct 4 ms 5032 KB Output is correct
36 Correct 4 ms 5028 KB Output is correct
37 Correct 4 ms 5028 KB Output is correct
38 Correct 4 ms 5072 KB Output is correct
39 Correct 4 ms 5072 KB Output is correct
40 Correct 4 ms 5072 KB Output is correct
41 Correct 4 ms 5072 KB Output is correct
42 Correct 4 ms 5072 KB Output is correct
43 Correct 3 ms 5072 KB Output is correct
44 Correct 4 ms 5072 KB Output is correct
45 Correct 3 ms 5072 KB Output is correct
46 Correct 3 ms 5072 KB Output is correct
47 Correct 4 ms 5072 KB Output is correct
48 Correct 4 ms 5072 KB Output is correct
49 Correct 4 ms 5080 KB Output is correct
50 Correct 4 ms 5072 KB Output is correct
51 Correct 5 ms 5072 KB Output is correct
52 Correct 4 ms 5072 KB Output is correct
53 Correct 4 ms 5028 KB Output is correct
54 Correct 4 ms 5072 KB Output is correct
55 Correct 4 ms 5072 KB Output is correct
56 Correct 4 ms 5072 KB Output is correct
57 Correct 4 ms 5200 KB Output is correct
58 Correct 4 ms 5072 KB Output is correct
59 Correct 4 ms 5028 KB Output is correct
60 Correct 4 ms 5072 KB Output is correct
61 Correct 4 ms 5072 KB Output is correct
62 Correct 3 ms 5200 KB Output is correct
63 Correct 3 ms 5032 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5076 KB Output is correct
2 Correct 3 ms 5016 KB Output is correct
3 Correct 3 ms 4944 KB Output is correct
4 Correct 3 ms 5016 KB Output is correct
5 Correct 3 ms 4944 KB Output is correct
6 Correct 3 ms 4944 KB Output is correct
7 Correct 3 ms 4944 KB Output is correct
8 Correct 3 ms 4944 KB Output is correct
9 Correct 3 ms 4944 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 3 ms 4944 KB Output is correct
12 Correct 3 ms 4944 KB Output is correct
13 Correct 3 ms 4944 KB Output is correct
14 Correct 3 ms 5016 KB Output is correct
15 Correct 3 ms 4944 KB Output is correct
16 Correct 3 ms 4944 KB Output is correct
17 Correct 3 ms 5016 KB Output is correct
18 Correct 3 ms 4944 KB Output is correct
19 Correct 4 ms 4960 KB Output is correct
20 Correct 4 ms 5016 KB Output is correct
21 Correct 3 ms 4944 KB Output is correct
22 Correct 4 ms 5072 KB Output is correct
23 Correct 4 ms 5024 KB Output is correct
24 Correct 5 ms 5072 KB Output is correct
25 Correct 4 ms 5072 KB Output is correct
26 Correct 4 ms 5024 KB Output is correct
27 Correct 4 ms 5072 KB Output is correct
28 Correct 4 ms 5072 KB Output is correct
29 Correct 4 ms 5200 KB Output is correct
30 Correct 4 ms 5072 KB Output is correct
31 Correct 4 ms 5072 KB Output is correct
32 Correct 4 ms 5072 KB Output is correct
33 Correct 4 ms 5072 KB Output is correct
34 Correct 4 ms 5072 KB Output is correct
35 Correct 4 ms 5032 KB Output is correct
36 Correct 4 ms 5028 KB Output is correct
37 Correct 4 ms 5028 KB Output is correct
38 Correct 4 ms 5072 KB Output is correct
39 Correct 4 ms 5072 KB Output is correct
40 Correct 4 ms 5072 KB Output is correct
41 Correct 4 ms 5072 KB Output is correct
42 Correct 4 ms 5072 KB Output is correct
43 Correct 3 ms 5072 KB Output is correct
44 Correct 4 ms 5072 KB Output is correct
45 Correct 3 ms 5072 KB Output is correct
46 Correct 3 ms 5072 KB Output is correct
47 Correct 4 ms 5072 KB Output is correct
48 Correct 4 ms 5072 KB Output is correct
49 Correct 4 ms 5080 KB Output is correct
50 Correct 4 ms 5072 KB Output is correct
51 Correct 5 ms 5072 KB Output is correct
52 Correct 4 ms 5072 KB Output is correct
53 Correct 4 ms 5028 KB Output is correct
54 Correct 4 ms 5072 KB Output is correct
55 Correct 4 ms 5072 KB Output is correct
56 Correct 4 ms 5072 KB Output is correct
57 Correct 4 ms 5200 KB Output is correct
58 Correct 4 ms 5072 KB Output is correct
59 Correct 4 ms 5028 KB Output is correct
60 Correct 4 ms 5072 KB Output is correct
61 Correct 4 ms 5072 KB Output is correct
62 Correct 3 ms 5200 KB Output is correct
63 Correct 3 ms 5032 KB Output is correct
64 Correct 180 ms 14512 KB Output is correct
65 Correct 170 ms 14496 KB Output is correct
66 Correct 136 ms 14552 KB Output is correct
67 Correct 174 ms 14508 KB Output is correct
68 Correct 152 ms 14552 KB Output is correct
69 Correct 135 ms 14432 KB Output is correct
70 Correct 171 ms 14464 KB Output is correct
71 Correct 131 ms 14440 KB Output is correct
72 Correct 165 ms 14504 KB Output is correct
73 Correct 177 ms 27128 KB Output is correct
74 Correct 187 ms 26912 KB Output is correct
75 Correct 163 ms 14436 KB Output is correct
76 Correct 165 ms 14388 KB Output is correct
77 Correct 143 ms 14432 KB Output is correct
78 Correct 168 ms 14380 KB Output is correct
79 Correct 181 ms 14320 KB Output is correct
80 Correct 182 ms 14324 KB Output is correct
81 Correct 135 ms 14752 KB Output is correct
82 Correct 148 ms 14504 KB Output is correct
83 Correct 175 ms 19596 KB Output is correct
84 Correct 159 ms 21608 KB Output is correct
85 Correct 183 ms 21228 KB Output is correct
86 Correct 169 ms 15708 KB Output is correct
87 Correct 155 ms 15236 KB Output is correct
88 Correct 162 ms 15752 KB Output is correct
89 Correct 129 ms 15636 KB Output is correct
90 Correct 160 ms 15420 KB Output is correct
91 Correct 166 ms 15632 KB Output is correct
92 Correct 152 ms 15892 KB Output is correct
93 Correct 129 ms 18352 KB Output is correct
94 Correct 142 ms 20096 KB Output is correct
95 Correct 146 ms 18748 KB Output is correct
96 Correct 126 ms 17012 KB Output is correct
97 Correct 136 ms 15364 KB Output is correct
98 Correct 131 ms 14968 KB Output is correct
99 Correct 161 ms 14944 KB Output is correct
100 Correct 128 ms 17920 KB Output is correct
101 Correct 130 ms 15856 KB Output is correct
102 Correct 135 ms 15064 KB Output is correct
103 Correct 171 ms 14960 KB Output is correct
104 Correct 87 ms 15244 KB Output is correct
105 Correct 210 ms 23816 KB Output is correct
106 Correct 87 ms 15080 KB Output is correct
107 Correct 89 ms 15164 KB Output is correct
108 Correct 199 ms 27780 KB Output is correct
109 Correct 93 ms 15192 KB Output is correct
110 Correct 177 ms 28064 KB Output is correct
111 Correct 153 ms 14392 KB Output is correct