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답안 #762982

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
762982 2023-06-22T02:02:49 Z vjudge1 Power Plant (JOI20_power) C++17
100 / 100
 149 ms 27032 KB 
#include<bits/stdc++.h>
using namespace std;
vector<int> ad[200001];
int dp[200001][2];
bool visited[200001], light[200001];
void dfs(int u)
{
    visited[u] = 1;
    for(int v : ad[u]) if(visited[v] == 0) dfs(v);
    int sum = 0;
    for(int v : ad[u]) if(visited[v] == 0) sum += dp[v][1];
    dp[u][1] = max((int)light[u], sum - light[u]);
    //calculate dp[u][0]
    //Not activated case
    int maxdif = 0, case1 = 0;
    for(int v : ad[u]) if(visited[v] == 0){
        maxdif = max(maxdif, max(dp[v][0], dp[v][1]));
        case1 += dp[v][1];
    }
    if(ad[u].size()+(u==1) > 2) case1 -= light[u];
    case1 = max(case1, maxdif);
    //Activated case
    int case2 = 0, sumcase = 0;
    for(int v : ad[u]) if(visited[v] == 0){
        case2 = max(case2, dp[v][1]);
        sumcase += dp[v][1];
    }
    if(ad[u].size()+(u==1) > 2) sumcase -= light[u];
    case2 += light[u];
    case2 = max(case2, sumcase);
    dp[u][0] = max(case1, case2);
    visited[u] = 0;
    //cout<<u<<" "<<dp[u][0]<<" "<<dp[u][1]<<'\n';
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin>>n;
    for(int i = 0; i < n-1; i++){
        int u, v;
        cin>>u>>v;
        ad[u].push_back(v);
        ad[v].push_back(u);
    }
    for(int i = 1; i <= n; i++){
        char x;
        cin>>x;
        light[i] = (x == '1');
    }
    dfs(1);
    cout<<max(dp[1][0], dp[1][1]);
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4976 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 2 ms 4948 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4976 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 2 ms 4948 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 3 ms 5076 KB Output is correct
24 Correct 3 ms 5076 KB Output is correct
25 Correct 3 ms 4992 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 3 ms 5076 KB Output is correct
29 Correct 3 ms 5204 KB Output is correct
30 Correct 3 ms 5076 KB Output is correct
31 Correct 3 ms 5076 KB Output is correct
32 Correct 3 ms 5076 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 3 ms 5076 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 4 ms 5076 KB Output is correct
40 Correct 3 ms 5076 KB Output is correct
41 Correct 3 ms 5076 KB Output is correct
42 Correct 3 ms 5076 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5076 KB Output is correct
45 Correct 3 ms 5076 KB Output is correct
46 Correct 3 ms 5076 KB Output is correct
47 Correct 3 ms 5076 KB Output is correct
48 Correct 3 ms 5076 KB Output is correct
49 Correct 3 ms 5076 KB Output is correct
50 Correct 3 ms 5124 KB Output is correct
51 Correct 3 ms 5076 KB Output is correct
52 Correct 3 ms 5076 KB Output is correct
53 Correct 3 ms 5076 KB Output is correct
54 Correct 3 ms 5076 KB Output is correct
55 Correct 3 ms 5076 KB Output is correct
56 Correct 3 ms 5076 KB Output is correct
57 Correct 3 ms 5204 KB Output is correct
58 Correct 3 ms 5076 KB Output is correct
59 Correct 2 ms 5076 KB Output is correct
60 Correct 3 ms 5076 KB Output is correct
61 Correct 3 ms 5076 KB Output is correct
62 Correct 3 ms 5204 KB Output is correct
63 Correct 3 ms 5076 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4976 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 2 ms 4948 KB Output is correct
21 Correct 2 ms 4948 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 3 ms 5076 KB Output is correct
24 Correct 3 ms 5076 KB Output is correct
25 Correct 3 ms 4992 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 3 ms 5076 KB Output is correct
29 Correct 3 ms 5204 KB Output is correct
30 Correct 3 ms 5076 KB Output is correct
31 Correct 3 ms 5076 KB Output is correct
32 Correct 3 ms 5076 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 3 ms 5076 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 3 ms 5076 KB Output is correct
39 Correct 4 ms 5076 KB Output is correct
40 Correct 3 ms 5076 KB Output is correct
41 Correct 3 ms 5076 KB Output is correct
42 Correct 3 ms 5076 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5076 KB Output is correct
45 Correct 3 ms 5076 KB Output is correct
46 Correct 3 ms 5076 KB Output is correct
47 Correct 3 ms 5076 KB Output is correct
48 Correct 3 ms 5076 KB Output is correct
49 Correct 3 ms 5076 KB Output is correct
50 Correct 3 ms 5124 KB Output is correct
51 Correct 3 ms 5076 KB Output is correct
52 Correct 3 ms 5076 KB Output is correct
53 Correct 3 ms 5076 KB Output is correct
54 Correct 3 ms 5076 KB Output is correct
55 Correct 3 ms 5076 KB Output is correct
56 Correct 3 ms 5076 KB Output is correct
57 Correct 3 ms 5204 KB Output is correct
58 Correct 3 ms 5076 KB Output is correct
59 Correct 2 ms 5076 KB Output is correct
60 Correct 3 ms 5076 KB Output is correct
61 Correct 3 ms 5076 KB Output is correct
62 Correct 3 ms 5204 KB Output is correct
63 Correct 3 ms 5076 KB Output is correct
64 Correct 92 ms 13336 KB Output is correct
65 Correct 101 ms 13300 KB Output is correct
66 Correct 69 ms 13260 KB Output is correct
67 Correct 76 ms 13296 KB Output is correct
68 Correct 83 ms 13260 KB Output is correct
69 Correct 101 ms 13516 KB Output is correct
70 Correct 80 ms 13224 KB Output is correct
71 Correct 73 ms 13260 KB Output is correct
72 Correct 88 ms 13332 KB Output is correct
73 Correct 95 ms 25848 KB Output is correct
74 Correct 128 ms 25824 KB Output is correct
75 Correct 67 ms 13132 KB Output is correct
76 Correct 68 ms 13132 KB Output is correct
77 Correct 69 ms 13212 KB Output is correct
78 Correct 76 ms 13104 KB Output is correct
79 Correct 95 ms 13120 KB Output is correct
80 Correct 96 ms 13152 KB Output is correct
81 Correct 75 ms 13572 KB Output is correct
82 Correct 73 ms 13448 KB Output is correct
83 Correct 85 ms 18420 KB Output is correct
84 Correct 92 ms 20540 KB Output is correct
85 Correct 93 ms 20172 KB Output is correct
86 Correct 80 ms 14568 KB Output is correct
87 Correct 78 ms 14100 KB Output is correct
88 Correct 68 ms 14468 KB Output is correct
89 Correct 78 ms 14572 KB Output is correct
90 Correct 89 ms 14284 KB Output is correct
91 Correct 72 ms 14492 KB Output is correct
92 Correct 74 ms 14852 KB Output is correct
93 Correct 77 ms 17280 KB Output is correct
94 Correct 74 ms 19024 KB Output is correct
95 Correct 84 ms 17608 KB Output is correct
96 Correct 76 ms 15820 KB Output is correct
97 Correct 96 ms 14388 KB Output is correct
98 Correct 69 ms 13900 KB Output is correct
99 Correct 72 ms 13704 KB Output is correct
100 Correct 75 ms 16844 KB Output is correct
101 Correct 73 ms 14816 KB Output is correct
102 Correct 126 ms 14172 KB Output is correct
103 Correct 76 ms 13900 KB Output is correct
104 Correct 58 ms 13972 KB Output is correct
105 Correct 149 ms 22680 KB Output is correct
106 Correct 50 ms 13892 KB Output is correct
107 Correct 64 ms 13976 KB Output is correct
108 Correct 89 ms 26600 KB Output is correct
109 Correct 59 ms 13924 KB Output is correct
110 Correct 109 ms 27032 KB Output is correct
111 Correct 123 ms 13260 KB Output is correct