답안 #869768

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
869768	2023-11-05T15:14:11 Z	serifefedartar	Power Plant (JOI20_power)	C++17	100 / 100	111 ms	30212 KB

power

#include <bits/stdc++.h>
using namespace std;
 
#define fast ios::sync_with_stdio(0);cin.tie(0);
#define s second
#define f first
typedef long long ll;
const ll MOD = 1e9+9;
const ll LOGN = 30; 
const ll MAXN = 2e5 + 100;
const ll MULT = 1e9;

vector<vector<int>> graph;
int here[MAXN], sub[MAXN], par[MAXN];
int ans = 0;

void dfs(int node, int parent) {
	int sum = 0;
	for (auto u : graph[node]) {
		if (u == parent)
			continue;
		dfs(u, node);
		sum += sub[u];
	}
	sub[node] = max(here[node], sum - here[node]);
}

void dfs2(int node, int parent) {
	int sum = 0;
	for (auto u : graph[node]) {
		if (u != parent)
			sum += sub[u];
	}
	sum += par[node];

	for (auto u : graph[node]) {
		if (u != parent)
			par[u] = max(here[node], sum - sub[u] - here[node]);
	}

	for (auto u : graph[node]) {
		if (u == parent)
			continue;
		dfs2(u, node);
	}
}

int main() {
	fast
	int N, A, B;
	cin >> N;

	graph = vector<vector<int>>(N+1, vector<int>());
	for (int i = 1; i < N; i++) {
		cin >> A >> B;
		graph[A].push_back(B);
		graph[B].push_back(A);
	}
	for (int i = 1; i <= N; i++) {
		char ch; cin >> ch;
		here[i] = ch - '0';
	}
	dfs(1, 1);
	dfs2(1, -1);

	for (int i = 1; i <= N; i++)
		ans = max(ans, sub[i] + par[i]);
	cout << ans << "\n";
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2516 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2512 KB	Output is correct
13	Correct	1 ms	2392 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	0 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2516 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2512 KB	Output is correct
13	Correct	1 ms	2392 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	0 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2652 KB	Output is correct
23	Correct	1 ms	2652 KB	Output is correct
24	Correct	1 ms	2532 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2652 KB	Output is correct
27	Correct	1 ms	2652 KB	Output is correct
28	Correct	1 ms	2524 KB	Output is correct
29	Correct	1 ms	2632 KB	Output is correct
30	Correct	1 ms	2652 KB	Output is correct
31	Correct	1 ms	2396 KB	Output is correct
32	Correct	1 ms	2640 KB	Output is correct
33	Correct	1 ms	2652 KB	Output is correct
34	Correct	1 ms	2392 KB	Output is correct
35	Correct	1 ms	2392 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	1 ms	2652 KB	Output is correct
38	Correct	1 ms	2652 KB	Output is correct
39	Correct	1 ms	2652 KB	Output is correct
40	Correct	1 ms	2524 KB	Output is correct
41	Correct	1 ms	2652 KB	Output is correct
42	Correct	1 ms	2652 KB	Output is correct
43	Correct	1 ms	2652 KB	Output is correct
44	Correct	1 ms	2652 KB	Output is correct
45	Correct	1 ms	2652 KB	Output is correct
46	Correct	1 ms	2652 KB	Output is correct
47	Correct	1 ms	2652 KB	Output is correct
48	Correct	1 ms	2652 KB	Output is correct
49	Correct	1 ms	2652 KB	Output is correct
50	Correct	1 ms	2504 KB	Output is correct
51	Correct	1 ms	2652 KB	Output is correct
52	Correct	1 ms	2644 KB	Output is correct
53	Correct	1 ms	2652 KB	Output is correct
54	Correct	1 ms	2652 KB	Output is correct
55	Correct	1 ms	2652 KB	Output is correct
56	Correct	1 ms	2648 KB	Output is correct
57	Correct	1 ms	2648 KB	Output is correct
58	Correct	1 ms	2652 KB	Output is correct
59	Correct	1 ms	2652 KB	Output is correct
60	Correct	1 ms	2648 KB	Output is correct
61	Correct	1 ms	2652 KB	Output is correct
62	Correct	1 ms	2652 KB	Output is correct
63	Correct	1 ms	2520 KB	Output is correct

Subtask #3
53.0 / 53.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	2396 KB	Output is correct
2	Correct	1 ms	2396 KB	Output is correct
3	Correct	1 ms	2396 KB	Output is correct
4	Correct	1 ms	2396 KB	Output is correct
5	Correct	1 ms	2396 KB	Output is correct
6	Correct	1 ms	2516 KB	Output is correct
7	Correct	1 ms	2396 KB	Output is correct
8	Correct	0 ms	2396 KB	Output is correct
9	Correct	1 ms	2396 KB	Output is correct
10	Correct	1 ms	2396 KB	Output is correct
11	Correct	1 ms	2396 KB	Output is correct
12	Correct	1 ms	2512 KB	Output is correct
13	Correct	1 ms	2392 KB	Output is correct
14	Correct	1 ms	2396 KB	Output is correct
15	Correct	1 ms	2396 KB	Output is correct
16	Correct	1 ms	2396 KB	Output is correct
17	Correct	1 ms	2396 KB	Output is correct
18	Correct	1 ms	2396 KB	Output is correct
19	Correct	0 ms	2396 KB	Output is correct
20	Correct	1 ms	2396 KB	Output is correct
21	Correct	1 ms	2396 KB	Output is correct
22	Correct	1 ms	2652 KB	Output is correct
23	Correct	1 ms	2652 KB	Output is correct
24	Correct	1 ms	2532 KB	Output is correct
25	Correct	1 ms	2652 KB	Output is correct
26	Correct	1 ms	2652 KB	Output is correct
27	Correct	1 ms	2652 KB	Output is correct
28	Correct	1 ms	2524 KB	Output is correct
29	Correct	1 ms	2632 KB	Output is correct
30	Correct	1 ms	2652 KB	Output is correct
31	Correct	1 ms	2396 KB	Output is correct
32	Correct	1 ms	2640 KB	Output is correct
33	Correct	1 ms	2652 KB	Output is correct
34	Correct	1 ms	2392 KB	Output is correct
35	Correct	1 ms	2392 KB	Output is correct
36	Correct	1 ms	2396 KB	Output is correct
37	Correct	1 ms	2652 KB	Output is correct
38	Correct	1 ms	2652 KB	Output is correct
39	Correct	1 ms	2652 KB	Output is correct
40	Correct	1 ms	2524 KB	Output is correct
41	Correct	1 ms	2652 KB	Output is correct
42	Correct	1 ms	2652 KB	Output is correct
43	Correct	1 ms	2652 KB	Output is correct
44	Correct	1 ms	2652 KB	Output is correct
45	Correct	1 ms	2652 KB	Output is correct
46	Correct	1 ms	2652 KB	Output is correct
47	Correct	1 ms	2652 KB	Output is correct
48	Correct	1 ms	2652 KB	Output is correct
49	Correct	1 ms	2652 KB	Output is correct
50	Correct	1 ms	2504 KB	Output is correct
51	Correct	1 ms	2652 KB	Output is correct
52	Correct	1 ms	2644 KB	Output is correct
53	Correct	1 ms	2652 KB	Output is correct
54	Correct	1 ms	2652 KB	Output is correct
55	Correct	1 ms	2652 KB	Output is correct
56	Correct	1 ms	2648 KB	Output is correct
57	Correct	1 ms	2648 KB	Output is correct
58	Correct	1 ms	2652 KB	Output is correct
59	Correct	1 ms	2652 KB	Output is correct
60	Correct	1 ms	2648 KB	Output is correct
61	Correct	1 ms	2652 KB	Output is correct
62	Correct	1 ms	2652 KB	Output is correct
63	Correct	1 ms	2520 KB	Output is correct
64	Correct	96 ms	16560 KB	Output is correct
65	Correct	73 ms	16364 KB	Output is correct
66	Correct	96 ms	16408 KB	Output is correct
67	Correct	107 ms	16396 KB	Output is correct
68	Correct	94 ms	16828 KB	Output is correct
69	Correct	70 ms	16396 KB	Output is correct
70	Correct	87 ms	16520 KB	Output is correct
71	Correct	76 ms	16408 KB	Output is correct
72	Correct	82 ms	16500 KB	Output is correct
73	Correct	108 ms	29008 KB	Output is correct
74	Correct	109 ms	29008 KB	Output is correct
75	Correct	64 ms	16464 KB	Output is correct
76	Correct	66 ms	16464 KB	Output is correct
77	Correct	80 ms	16464 KB	Output is correct
78	Correct	76 ms	16468 KB	Output is correct
79	Correct	69 ms	16212 KB	Output is correct
80	Correct	74 ms	16212 KB	Output is correct
81	Correct	63 ms	16652 KB	Output is correct
82	Correct	71 ms	16588 KB	Output is correct
83	Correct	92 ms	21484 KB	Output is correct
84	Correct	90 ms	23796 KB	Output is correct
85	Correct	92 ms	23272 KB	Output is correct
86	Correct	96 ms	17748 KB	Output is correct
87	Correct	76 ms	17236 KB	Output is correct
88	Correct	78 ms	17748 KB	Output is correct
89	Correct	77 ms	17748 KB	Output is correct
90	Correct	92 ms	17532 KB	Output is correct
91	Correct	75 ms	17748 KB	Output is correct
92	Correct	77 ms	18000 KB	Output is correct
93	Correct	74 ms	20432 KB	Output is correct
94	Correct	79 ms	22172 KB	Output is correct
95	Correct	85 ms	20956 KB	Output is correct
96	Correct	75 ms	19156 KB	Output is correct
97	Correct	69 ms	17588 KB	Output is correct
98	Correct	68 ms	16980 KB	Output is correct
99	Correct	84 ms	16748 KB	Output is correct
100	Correct	93 ms	20308 KB	Output is correct
101	Correct	82 ms	17860 KB	Output is correct
102	Correct	74 ms	17188 KB	Output is correct
103	Correct	77 ms	17108 KB	Output is correct
104	Correct	60 ms	17328 KB	Output is correct
105	Correct	110 ms	25856 KB	Output is correct
106	Correct	46 ms	17096 KB	Output is correct
107	Correct	49 ms	16980 KB	Output is correct
108	Correct	109 ms	29776 KB	Output is correct
109	Correct	44 ms	17356 KB	Output is correct
110	Correct	111 ms	30212 KB	Output is correct
111	Correct	66 ms	16464 KB	Output is correct

답안 #869768

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