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답안 #927937

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
927937 2024-02-15T14:13:43 Z TAhmed33 Power Plant (JOI20_power) C++
100 / 100
 168 ms 32312 KB 
#include <bits/stdc++.h>
using namespace std;
#pragma GCC optimize ("Ofast")
const int MAXN = 2e5 + 25;
vector <int> adj[MAXN];
int n, dp[MAXN][2];
bool ok[MAXN];
void dfs (int pos, int par) {
	dp[pos][1] = ok[pos];
	int sum = 0, mx = 0, mx2 = 0;
	for (auto j : adj[pos]) {
		if (j == par) continue;
		dfs(j, pos);
		sum += dp[j][1];
		mx = max(mx, dp[j][1]);
		mx2 = max(mx2, dp[j][0]);
	}
	dp[pos][1] = max(dp[pos][1], sum - ok[pos]);
	dp[pos][0] = max({sum - ok[pos], ok[pos] + mx, mx2});
}
int main () {
	ios::sync_with_stdio(0); cin.tie(0);
	cin >> n;
	for (int i = 1; i < n; i++) {
		int a, b;
		cin >> a >> b;
		adj[a].push_back(b);
		adj[b].push_back(a);
	}
	for (int i = 1; i <= n; i++) {
		char c; cin >> c; ok[i] = c == '1';
	}
	dfs(1, -1);
	cout << dp[1][0] << '\n';
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 1 ms 6740 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6740 KB Output is correct
18 Correct 2 ms 6736 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 1 ms 6740 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6740 KB Output is correct
18 Correct 2 ms 6736 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct
22 Correct 2 ms 6748 KB Output is correct
23 Correct 2 ms 6780 KB Output is correct
24 Correct 2 ms 6744 KB Output is correct
25 Correct 3 ms 6748 KB Output is correct
26 Correct 3 ms 6748 KB Output is correct
27 Correct 2 ms 6748 KB Output is correct
28 Correct 3 ms 6748 KB Output is correct
29 Correct 3 ms 6744 KB Output is correct
30 Correct 2 ms 6748 KB Output is correct
31 Correct 2 ms 6756 KB Output is correct
32 Correct 2 ms 6748 KB Output is correct
33 Correct 2 ms 6748 KB Output is correct
34 Correct 2 ms 6748 KB Output is correct
35 Correct 2 ms 6748 KB Output is correct
36 Correct 2 ms 6816 KB Output is correct
37 Correct 2 ms 6744 KB Output is correct
38 Correct 2 ms 6748 KB Output is correct
39 Correct 2 ms 6748 KB Output is correct
40 Correct 2 ms 6748 KB Output is correct
41 Correct 2 ms 6756 KB Output is correct
42 Correct 3 ms 6816 KB Output is correct
43 Correct 2 ms 6748 KB Output is correct
44 Correct 2 ms 6744 KB Output is correct
45 Correct 2 ms 6748 KB Output is correct
46 Correct 2 ms 6748 KB Output is correct
47 Correct 2 ms 6744 KB Output is correct
48 Correct 3 ms 6756 KB Output is correct
49 Correct 2 ms 6748 KB Output is correct
50 Correct 2 ms 6748 KB Output is correct
51 Correct 3 ms 6828 KB Output is correct
52 Correct 2 ms 6748 KB Output is correct
53 Correct 2 ms 6748 KB Output is correct
54 Correct 3 ms 6744 KB Output is correct
55 Correct 2 ms 6748 KB Output is correct
56 Correct 2 ms 6748 KB Output is correct
57 Correct 2 ms 6748 KB Output is correct
58 Correct 2 ms 6744 KB Output is correct
59 Correct 2 ms 6748 KB Output is correct
60 Correct 3 ms 6748 KB Output is correct
61 Correct 3 ms 6748 KB Output is correct
62 Correct 2 ms 6744 KB Output is correct
63 Correct 2 ms 6748 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 6492 KB Output is correct
2 Correct 2 ms 6492 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 1 ms 6740 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 2 ms 6492 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 2 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6740 KB Output is correct
18 Correct 2 ms 6736 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6488 KB Output is correct
22 Correct 2 ms 6748 KB Output is correct
23 Correct 2 ms 6780 KB Output is correct
24 Correct 2 ms 6744 KB Output is correct
25 Correct 3 ms 6748 KB Output is correct
26 Correct 3 ms 6748 KB Output is correct
27 Correct 2 ms 6748 KB Output is correct
28 Correct 3 ms 6748 KB Output is correct
29 Correct 3 ms 6744 KB Output is correct
30 Correct 2 ms 6748 KB Output is correct
31 Correct 2 ms 6756 KB Output is correct
32 Correct 2 ms 6748 KB Output is correct
33 Correct 2 ms 6748 KB Output is correct
34 Correct 2 ms 6748 KB Output is correct
35 Correct 2 ms 6748 KB Output is correct
36 Correct 2 ms 6816 KB Output is correct
37 Correct 2 ms 6744 KB Output is correct
38 Correct 2 ms 6748 KB Output is correct
39 Correct 2 ms 6748 KB Output is correct
40 Correct 2 ms 6748 KB Output is correct
41 Correct 2 ms 6756 KB Output is correct
42 Correct 3 ms 6816 KB Output is correct
43 Correct 2 ms 6748 KB Output is correct
44 Correct 2 ms 6744 KB Output is correct
45 Correct 2 ms 6748 KB Output is correct
46 Correct 2 ms 6748 KB Output is correct
47 Correct 2 ms 6744 KB Output is correct
48 Correct 3 ms 6756 KB Output is correct
49 Correct 2 ms 6748 KB Output is correct
50 Correct 2 ms 6748 KB Output is correct
51 Correct 3 ms 6828 KB Output is correct
52 Correct 2 ms 6748 KB Output is correct
53 Correct 2 ms 6748 KB Output is correct
54 Correct 3 ms 6744 KB Output is correct
55 Correct 2 ms 6748 KB Output is correct
56 Correct 2 ms 6748 KB Output is correct
57 Correct 2 ms 6748 KB Output is correct
58 Correct 2 ms 6744 KB Output is correct
59 Correct 2 ms 6748 KB Output is correct
60 Correct 3 ms 6748 KB Output is correct
61 Correct 3 ms 6748 KB Output is correct
62 Correct 2 ms 6744 KB Output is correct
63 Correct 2 ms 6748 KB Output is correct
64 Correct 70 ms 16236 KB Output is correct
65 Correct 89 ms 15952 KB Output is correct
66 Correct 168 ms 15908 KB Output is correct
67 Correct 83 ms 15956 KB Output is correct
68 Correct 106 ms 15956 KB Output is correct
69 Correct 71 ms 15868 KB Output is correct
70 Correct 98 ms 15952 KB Output is correct
71 Correct 70 ms 15964 KB Output is correct
72 Correct 66 ms 15952 KB Output is correct
73 Correct 119 ms 31132 KB Output is correct
74 Correct 119 ms 30868 KB Output is correct
75 Correct 68 ms 15700 KB Output is correct
76 Correct 72 ms 15700 KB Output is correct
77 Correct 66 ms 15892 KB Output is correct
78 Correct 118 ms 15696 KB Output is correct
79 Correct 66 ms 15700 KB Output is correct
80 Correct 79 ms 15696 KB Output is correct
81 Correct 57 ms 16076 KB Output is correct
82 Correct 75 ms 15956 KB Output is correct
83 Correct 105 ms 21932 KB Output is correct
84 Correct 80 ms 24656 KB Output is correct
85 Correct 81 ms 24144 KB Output is correct
86 Correct 70 ms 17492 KB Output is correct
87 Correct 86 ms 16984 KB Output is correct
88 Correct 77 ms 17108 KB Output is correct
89 Correct 64 ms 17232 KB Output is correct
90 Correct 110 ms 17072 KB Output is correct
91 Correct 99 ms 17440 KB Output is correct
92 Correct 66 ms 17596 KB Output is correct
93 Correct 70 ms 20636 KB Output is correct
94 Correct 66 ms 22476 KB Output is correct
95 Correct 65 ms 20944 KB Output is correct
96 Correct 70 ms 18904 KB Output is correct
97 Correct 62 ms 16980 KB Output is correct
98 Correct 88 ms 16504 KB Output is correct
99 Correct 60 ms 16212 KB Output is correct
100 Correct 80 ms 20228 KB Output is correct
101 Correct 89 ms 17736 KB Output is correct
102 Correct 70 ms 16628 KB Output is correct
103 Correct 64 ms 16464 KB Output is correct
104 Correct 44 ms 16584 KB Output is correct
105 Correct 91 ms 27472 KB Output is correct
106 Correct 45 ms 16584 KB Output is correct
107 Correct 48 ms 16576 KB Output is correct
108 Correct 87 ms 31924 KB Output is correct
109 Correct 53 ms 16576 KB Output is correct
110 Correct 103 ms 32312 KB Output is correct
111 Correct 54 ms 15700 KB Output is correct