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답안 #1031872

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1031872 2024-07-23T08:17:44 Z 변재우(#10964) Power Plant (JOI20_power) C++17
100 / 100
 90 ms 26328 KB 
#include <bits/stdc++.h>
using namespace std;

const int Nmax=200010;
int N, ans, D1[Nmax], D2[Nmax];
bool A[Nmax];
string S;
vector<int> adj[Nmax];

void DFS(int curr, int prev) {
    for(int next:adj[curr]) if(next!=prev) DFS(next, curr);
    if(!A[curr]) {
        for(int next:adj[curr]) if(next!=prev) D1[curr]+=D1[next];
    }
    else {
        for(int next:adj[curr]) if(next!=prev) D1[curr]+=D1[next];
        D1[curr]=max(1, D1[curr]-1);
        for(int next:adj[curr]) if(next!=prev) D2[curr]+=D1[next];
        D2[curr]--;
        int tmp=0;
        for(int next:adj[curr]) if(next!=prev) tmp=max(tmp, D1[next]);
        D2[curr]=max(D2[curr], tmp+1);
    }
    ans=max({ans, D1[curr], D2[curr]});
}

signed main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin>>N;
    for(int i=1; i<N; i++) {
        int u, v; cin>>u>>v;
        adj[u].push_back(v), adj[v].push_back(u);
    }
    cin>>S;
    for(int i=1; i<=N; i++) A[i]=S[i-1]-'0';
    DFS(1, 0);
    cout<<ans;
    return 0;
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 3 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 5172 KB Output is correct
6 Correct 3 ms 4956 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 5156 KB Output is correct
9 Correct 3 ms 4956 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 2 ms 5176 KB Output is correct
12 Correct 2 ms 5092 KB Output is correct
13 Correct 3 ms 5052 KB Output is correct
14 Correct 3 ms 5172 KB Output is correct
15 Correct 2 ms 4956 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 3 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 5144 KB Output is correct
20 Correct 2 ms 5168 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 3 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 5172 KB Output is correct
6 Correct 3 ms 4956 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 5156 KB Output is correct
9 Correct 3 ms 4956 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 2 ms 5176 KB Output is correct
12 Correct 2 ms 5092 KB Output is correct
13 Correct 3 ms 5052 KB Output is correct
14 Correct 3 ms 5172 KB Output is correct
15 Correct 2 ms 4956 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 3 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 5144 KB Output is correct
20 Correct 2 ms 5168 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct
22 Correct 3 ms 5212 KB Output is correct
23 Correct 3 ms 5212 KB Output is correct
24 Correct 3 ms 5208 KB Output is correct
25 Correct 3 ms 5212 KB Output is correct
26 Correct 3 ms 5208 KB Output is correct
27 Correct 4 ms 5212 KB Output is correct
28 Correct 3 ms 5180 KB Output is correct
29 Correct 3 ms 5216 KB Output is correct
30 Correct 3 ms 5224 KB Output is correct
31 Correct 3 ms 5220 KB Output is correct
32 Correct 4 ms 5220 KB Output is correct
33 Correct 2 ms 5224 KB Output is correct
34 Correct 3 ms 5180 KB Output is correct
35 Correct 2 ms 5224 KB Output is correct
36 Correct 3 ms 5216 KB Output is correct
37 Correct 2 ms 5220 KB Output is correct
38 Correct 4 ms 5268 KB Output is correct
39 Correct 3 ms 5216 KB Output is correct
40 Correct 3 ms 5168 KB Output is correct
41 Correct 3 ms 5212 KB Output is correct
42 Correct 2 ms 5184 KB Output is correct
43 Correct 3 ms 5180 KB Output is correct
44 Correct 3 ms 5260 KB Output is correct
45 Correct 3 ms 5252 KB Output is correct
46 Correct 2 ms 5212 KB Output is correct
47 Correct 2 ms 5212 KB Output is correct
48 Correct 3 ms 5216 KB Output is correct
49 Correct 3 ms 5224 KB Output is correct
50 Correct 3 ms 5224 KB Output is correct
51 Correct 3 ms 5224 KB Output is correct
52 Correct 3 ms 5224 KB Output is correct
53 Correct 2 ms 5268 KB Output is correct
54 Correct 4 ms 5224 KB Output is correct
55 Correct 3 ms 5224 KB Output is correct
56 Correct 4 ms 5224 KB Output is correct
57 Correct 3 ms 5224 KB Output is correct
58 Correct 3 ms 5212 KB Output is correct
59 Correct 2 ms 5212 KB Output is correct
60 Correct 3 ms 5208 KB Output is correct
61 Correct 2 ms 5212 KB Output is correct
62 Correct 3 ms 5212 KB Output is correct
63 Correct 3 ms 5268 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 3 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 5172 KB Output is correct
6 Correct 3 ms 4956 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 5156 KB Output is correct
9 Correct 3 ms 4956 KB Output is correct
10 Correct 3 ms 4944 KB Output is correct
11 Correct 2 ms 5176 KB Output is correct
12 Correct 2 ms 5092 KB Output is correct
13 Correct 3 ms 5052 KB Output is correct
14 Correct 3 ms 5172 KB Output is correct
15 Correct 2 ms 4956 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 3 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 5144 KB Output is correct
20 Correct 2 ms 5168 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct
22 Correct 3 ms 5212 KB Output is correct
23 Correct 3 ms 5212 KB Output is correct
24 Correct 3 ms 5208 KB Output is correct
25 Correct 3 ms 5212 KB Output is correct
26 Correct 3 ms 5208 KB Output is correct
27 Correct 4 ms 5212 KB Output is correct
28 Correct 3 ms 5180 KB Output is correct
29 Correct 3 ms 5216 KB Output is correct
30 Correct 3 ms 5224 KB Output is correct
31 Correct 3 ms 5220 KB Output is correct
32 Correct 4 ms 5220 KB Output is correct
33 Correct 2 ms 5224 KB Output is correct
34 Correct 3 ms 5180 KB Output is correct
35 Correct 2 ms 5224 KB Output is correct
36 Correct 3 ms 5216 KB Output is correct
37 Correct 2 ms 5220 KB Output is correct
38 Correct 4 ms 5268 KB Output is correct
39 Correct 3 ms 5216 KB Output is correct
40 Correct 3 ms 5168 KB Output is correct
41 Correct 3 ms 5212 KB Output is correct
42 Correct 2 ms 5184 KB Output is correct
43 Correct 3 ms 5180 KB Output is correct
44 Correct 3 ms 5260 KB Output is correct
45 Correct 3 ms 5252 KB Output is correct
46 Correct 2 ms 5212 KB Output is correct
47 Correct 2 ms 5212 KB Output is correct
48 Correct 3 ms 5216 KB Output is correct
49 Correct 3 ms 5224 KB Output is correct
50 Correct 3 ms 5224 KB Output is correct
51 Correct 3 ms 5224 KB Output is correct
52 Correct 3 ms 5224 KB Output is correct
53 Correct 2 ms 5268 KB Output is correct
54 Correct 4 ms 5224 KB Output is correct
55 Correct 3 ms 5224 KB Output is correct
56 Correct 4 ms 5224 KB Output is correct
57 Correct 3 ms 5224 KB Output is correct
58 Correct 3 ms 5212 KB Output is correct
59 Correct 2 ms 5212 KB Output is correct
60 Correct 3 ms 5208 KB Output is correct
61 Correct 2 ms 5212 KB Output is correct
62 Correct 3 ms 5212 KB Output is correct
63 Correct 3 ms 5268 KB Output is correct
64 Correct 58 ms 16280 KB Output is correct
65 Correct 75 ms 16272 KB Output is correct
66 Correct 87 ms 16252 KB Output is correct
67 Correct 62 ms 16288 KB Output is correct
68 Correct 62 ms 16208 KB Output is correct
69 Correct 57 ms 16268 KB Output is correct
70 Correct 62 ms 16292 KB Output is correct
71 Correct 55 ms 16284 KB Output is correct
72 Correct 59 ms 15492 KB Output is correct
73 Correct 74 ms 26260 KB Output is correct
74 Correct 72 ms 26328 KB Output is correct
75 Correct 55 ms 16020 KB Output is correct
76 Correct 66 ms 16012 KB Output is correct
77 Correct 82 ms 16016 KB Output is correct
78 Correct 62 ms 16020 KB Output is correct
79 Correct 71 ms 16028 KB Output is correct
80 Correct 58 ms 16016 KB Output is correct
81 Correct 58 ms 16584 KB Output is correct
82 Correct 59 ms 16212 KB Output is correct
83 Correct 63 ms 20376 KB Output is correct
84 Correct 64 ms 21876 KB Output is correct
85 Correct 79 ms 21664 KB Output is correct
86 Correct 64 ms 17164 KB Output is correct
87 Correct 55 ms 16780 KB Output is correct
88 Correct 89 ms 17360 KB Output is correct
89 Correct 60 ms 17372 KB Output is correct
90 Correct 58 ms 17100 KB Output is correct
91 Correct 84 ms 17216 KB Output is correct
92 Correct 56 ms 17488 KB Output is correct
93 Correct 79 ms 19512 KB Output is correct
94 Correct 86 ms 20896 KB Output is correct
95 Correct 58 ms 19784 KB Output is correct
96 Correct 71 ms 18344 KB Output is correct
97 Correct 66 ms 17048 KB Output is correct
98 Correct 57 ms 16744 KB Output is correct
99 Correct 61 ms 16524 KB Output is correct
100 Correct 63 ms 19000 KB Output is correct
101 Correct 68 ms 17420 KB Output is correct
102 Correct 53 ms 16796 KB Output is correct
103 Correct 68 ms 16772 KB Output is correct
104 Correct 46 ms 15548 KB Output is correct
105 Correct 77 ms 22968 KB Output is correct
106 Correct 63 ms 16944 KB Output is correct
107 Correct 48 ms 16988 KB Output is correct
108 Correct 90 ms 26004 KB Output is correct
109 Correct 43 ms 15556 KB Output is correct
110 Correct 73 ms 26256 KB Output is correct
111 Correct 56 ms 16028 KB Output is correct