답안 #1032541

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1032541	2024-07-24T01:39:39 Z	juicy	Power Plant (JOI20_power)	C++17	100 / 100	102 ms	31032 KB

power

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

const int N = 2e5 + 5;

int n;
char s[N];
int dp[N], sum[N], f[N], mx[N];
vector<int> g[N];

void dfs(int u, int p) {
	for (int v : g[u]) {
		if (v != p) {
			dfs(v, u);
			mx[u] = max(mx[u], dp[v]);
			sum[u] += dp[v];
		}
	}
	if (s[u] == '1') {
		dp[u] = max(1, sum[u] - 1);
	} else {
		dp[u] = sum[u];
	}
}

int res = 0;

void reroot(int u, int p) {
	if (s[u] == '1') {
		res = max({res, f[u] + sum[u] - 1, max(f[u], mx[u]) + 1});
	}
	for (int v : g[u]) {
		if (v != p) {
			if (s[u] == '1') {
				f[v] = max(1, sum[u] - dp[v] + f[u] - 1);
			} else {
				f[v] = sum[u] - dp[v] + f[u];
			}
			reroot(v, u);
		}
	}
}

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

	cin >> n;
	for (int i = 1; i < n; ++i) {
		int u, v; cin >> u >> v;
		g[u].push_back(v);
		g[v].push_back(u);
	}
	for (int i = 1; i <= n; ++i) {
		cin >> s[i];
	}
	dfs(1, 1);
	reroot(1, 1);
	cout << res;
	return 0;
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4952 KB	Output is correct
2	Correct	2 ms	4952 KB	Output is correct
3	Correct	2 ms	4956 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	3 ms	5044 KB	Output is correct
6	Correct	2 ms	5164 KB	Output is correct
7	Correct	2 ms	5212 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	4956 KB	Output is correct
11	Correct	2 ms	4956 KB	Output is correct
12	Correct	2 ms	4956 KB	Output is correct
13	Correct	2 ms	4956 KB	Output is correct
14	Correct	2 ms	4956 KB	Output is correct
15	Correct	2 ms	4956 KB	Output is correct
16	Correct	2 ms	4956 KB	Output is correct
17	Correct	2 ms	4956 KB	Output is correct
18	Correct	2 ms	4956 KB	Output is correct
19	Correct	2 ms	4960 KB	Output is correct
20	Correct	2 ms	4960 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	4952 KB	Output is correct
2	Correct	2 ms	4952 KB	Output is correct
3	Correct	2 ms	4956 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	3 ms	5044 KB	Output is correct
6	Correct	2 ms	5164 KB	Output is correct
7	Correct	2 ms	5212 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	4956 KB	Output is correct
11	Correct	2 ms	4956 KB	Output is correct
12	Correct	2 ms	4956 KB	Output is correct
13	Correct	2 ms	4956 KB	Output is correct
14	Correct	2 ms	4956 KB	Output is correct
15	Correct	2 ms	4956 KB	Output is correct
16	Correct	2 ms	4956 KB	Output is correct
17	Correct	2 ms	4956 KB	Output is correct
18	Correct	2 ms	4956 KB	Output is correct
19	Correct	2 ms	4960 KB	Output is correct
20	Correct	2 ms	4960 KB	Output is correct
21	Correct	2 ms	4956 KB	Output is correct
22	Correct	2 ms	5212 KB	Output is correct
23	Correct	3 ms	5208 KB	Output is correct
24	Correct	2 ms	5212 KB	Output is correct
25	Correct	4 ms	5176 KB	Output is correct
26	Correct	3 ms	5208 KB	Output is correct
27	Correct	4 ms	5176 KB	Output is correct
28	Correct	3 ms	5212 KB	Output is correct
29	Correct	3 ms	5212 KB	Output is correct
30	Correct	3 ms	5288 KB	Output is correct
31	Correct	2 ms	5212 KB	Output is correct
32	Correct	3 ms	5212 KB	Output is correct
33	Correct	2 ms	5212 KB	Output is correct
34	Correct	2 ms	5208 KB	Output is correct
35	Correct	3 ms	5212 KB	Output is correct
36	Correct	3 ms	5176 KB	Output is correct
37	Correct	2 ms	5208 KB	Output is correct
38	Correct	3 ms	5212 KB	Output is correct
39	Correct	2 ms	5212 KB	Output is correct
40	Correct	3 ms	5212 KB	Output is correct
41	Correct	3 ms	5212 KB	Output is correct
42	Correct	2 ms	5212 KB	Output is correct
43	Correct	3 ms	5176 KB	Output is correct
44	Correct	4 ms	5212 KB	Output is correct
45	Correct	3 ms	5212 KB	Output is correct
46	Correct	4 ms	5192 KB	Output is correct
47	Correct	3 ms	5212 KB	Output is correct
48	Correct	3 ms	5200 KB	Output is correct
49	Correct	3 ms	5380 KB	Output is correct
50	Correct	2 ms	5212 KB	Output is correct
51	Correct	2 ms	5212 KB	Output is correct
52	Correct	3 ms	5212 KB	Output is correct
53	Correct	2 ms	5212 KB	Output is correct
54	Correct	3 ms	5208 KB	Output is correct
55	Correct	3 ms	5180 KB	Output is correct
56	Correct	2 ms	5208 KB	Output is correct
57	Correct	3 ms	5208 KB	Output is correct
58	Correct	2 ms	5212 KB	Output is correct
59	Correct	3 ms	5212 KB	Output is correct
60	Correct	2 ms	5212 KB	Output is correct
61	Correct	2 ms	5212 KB	Output is correct
62	Correct	2 ms	5212 KB	Output is correct
63	Correct	4 ms	5212 KB	Output is correct

Subtask #3
53.0 / 53.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4952 KB	Output is correct
2	Correct	2 ms	4952 KB	Output is correct
3	Correct	2 ms	4956 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	3 ms	5044 KB	Output is correct
6	Correct	2 ms	5164 KB	Output is correct
7	Correct	2 ms	5212 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	4956 KB	Output is correct
11	Correct	2 ms	4956 KB	Output is correct
12	Correct	2 ms	4956 KB	Output is correct
13	Correct	2 ms	4956 KB	Output is correct
14	Correct	2 ms	4956 KB	Output is correct
15	Correct	2 ms	4956 KB	Output is correct
16	Correct	2 ms	4956 KB	Output is correct
17	Correct	2 ms	4956 KB	Output is correct
18	Correct	2 ms	4956 KB	Output is correct
19	Correct	2 ms	4960 KB	Output is correct
20	Correct	2 ms	4960 KB	Output is correct
21	Correct	2 ms	4956 KB	Output is correct
22	Correct	2 ms	5212 KB	Output is correct
23	Correct	3 ms	5208 KB	Output is correct
24	Correct	2 ms	5212 KB	Output is correct
25	Correct	4 ms	5176 KB	Output is correct
26	Correct	3 ms	5208 KB	Output is correct
27	Correct	4 ms	5176 KB	Output is correct
28	Correct	3 ms	5212 KB	Output is correct
29	Correct	3 ms	5212 KB	Output is correct
30	Correct	3 ms	5288 KB	Output is correct
31	Correct	2 ms	5212 KB	Output is correct
32	Correct	3 ms	5212 KB	Output is correct
33	Correct	2 ms	5212 KB	Output is correct
34	Correct	2 ms	5208 KB	Output is correct
35	Correct	3 ms	5212 KB	Output is correct
36	Correct	3 ms	5176 KB	Output is correct
37	Correct	2 ms	5208 KB	Output is correct
38	Correct	3 ms	5212 KB	Output is correct
39	Correct	2 ms	5212 KB	Output is correct
40	Correct	3 ms	5212 KB	Output is correct
41	Correct	3 ms	5212 KB	Output is correct
42	Correct	2 ms	5212 KB	Output is correct
43	Correct	3 ms	5176 KB	Output is correct
44	Correct	4 ms	5212 KB	Output is correct
45	Correct	3 ms	5212 KB	Output is correct
46	Correct	4 ms	5192 KB	Output is correct
47	Correct	3 ms	5212 KB	Output is correct
48	Correct	3 ms	5200 KB	Output is correct
49	Correct	3 ms	5380 KB	Output is correct
50	Correct	2 ms	5212 KB	Output is correct
51	Correct	2 ms	5212 KB	Output is correct
52	Correct	3 ms	5212 KB	Output is correct
53	Correct	2 ms	5212 KB	Output is correct
54	Correct	3 ms	5208 KB	Output is correct
55	Correct	3 ms	5180 KB	Output is correct
56	Correct	2 ms	5208 KB	Output is correct
57	Correct	3 ms	5208 KB	Output is correct
58	Correct	2 ms	5212 KB	Output is correct
59	Correct	3 ms	5212 KB	Output is correct
60	Correct	2 ms	5212 KB	Output is correct
61	Correct	2 ms	5212 KB	Output is correct
62	Correct	2 ms	5212 KB	Output is correct
63	Correct	4 ms	5212 KB	Output is correct
64	Correct	70 ms	17492 KB	Output is correct
65	Correct	72 ms	17456 KB	Output is correct
66	Correct	68 ms	17452 KB	Output is correct
67	Correct	82 ms	17360 KB	Output is correct
68	Correct	72 ms	17492 KB	Output is correct
69	Correct	66 ms	17544 KB	Output is correct
70	Correct	71 ms	17492 KB	Output is correct
71	Correct	72 ms	17356 KB	Output is correct
72	Correct	72 ms	17504 KB	Output is correct
73	Correct	94 ms	29936 KB	Output is correct
74	Correct	93 ms	30040 KB	Output is correct
75	Correct	63 ms	17240 KB	Output is correct
76	Correct	64 ms	17232 KB	Output is correct
77	Correct	78 ms	17492 KB	Output is correct
78	Correct	71 ms	17220 KB	Output is correct
79	Correct	69 ms	17232 KB	Output is correct
80	Correct	71 ms	17232 KB	Output is correct
81	Correct	58 ms	17572 KB	Output is correct
82	Correct	63 ms	17616 KB	Output is correct
83	Correct	75 ms	22560 KB	Output is correct
84	Correct	81 ms	24736 KB	Output is correct
85	Correct	102 ms	24352 KB	Output is correct
86	Correct	70 ms	18768 KB	Output is correct
87	Correct	68 ms	18260 KB	Output is correct
88	Correct	69 ms	18672 KB	Output is correct
89	Correct	71 ms	18768 KB	Output is correct
90	Correct	71 ms	18512 KB	Output is correct
91	Correct	69 ms	18756 KB	Output is correct
92	Correct	68 ms	19024 KB	Output is correct
93	Correct	72 ms	21456 KB	Output is correct
94	Correct	80 ms	22948 KB	Output is correct
95	Correct	68 ms	21708 KB	Output is correct
96	Correct	73 ms	19984 KB	Output is correct
97	Correct	64 ms	18552 KB	Output is correct
98	Correct	66 ms	18000 KB	Output is correct
99	Correct	68 ms	17868 KB	Output is correct
100	Correct	67 ms	21072 KB	Output is correct
101	Correct	77 ms	19028 KB	Output is correct
102	Correct	69 ms	18256 KB	Output is correct
103	Correct	73 ms	18004 KB	Output is correct
104	Correct	42 ms	16708 KB	Output is correct
105	Correct	97 ms	26964 KB	Output is correct
106	Correct	45 ms	16512 KB	Output is correct
107	Correct	49 ms	16448 KB	Output is correct
108	Correct	95 ms	30804 KB	Output is correct
109	Correct	54 ms	16556 KB	Output is correct
110	Correct	86 ms	31032 KB	Output is correct
111	Correct	66 ms	17232 KB	Output is correct

답안 #1032541

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 41.0 / 41.0

Subtask #3 53.0 / 53.0

Subtask #1
6.0 / 6.0

Subtask #2
41.0 / 41.0

Subtask #3
53.0 / 53.0