답안 #295042

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
295042	2020-09-09T12:48:33 Z	Poimidorka	Power Plant (JOI20_power)	C++14	100 / 100	210 ms	27704 KB

power

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>


using namespace std;


#define x first
#define y second

const int maxn = 2e5 + 1;


int dp[maxn][3];
vector<vector<int>> g;
string s;


void dfs(int v, int p) {
	for (int u : g[v])
		if (u != p)
			dfs(u, v);
	dp[v][0] = 0;
	if (s[v] == '1')
		dp[v][1] = 1;
	int sm = 0;
	for (int u : g[v]) {
		if (u != p) {
			if (s[v] == '1')
				dp[v][2] = max(dp[v][2], dp[u][1] + 1);
			dp[v][2] = max(dp[v][2], dp[u][2] - (s[v] == '1'));
			sm += max(dp[u][1], 0);
		}
	}
	dp[v][1] = max(dp[v][1], sm - (s[v] == '1'));
}

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n;
	cin >> n;
	g.resize(n);
	for (int i = 0; i < n; i++)
		dp[i][0] = dp[i][1] = dp[i][2] = -1e9;
	for (int i = 0; i < n - 1; i++) {
		int u, v;
		cin >> u >> v;
		u--;
		v--;
		g[u].push_back(v);
		g[v].push_back(u);
	}
	cin >> s;
	dfs(0, -1);
	int ans = 0;
	for (int i = 0; i < n; i++) {
		ans = max(ans, dp[i][1]);
		ans = max(ans, dp[i][2]);
	}
	cout << ans;
	return 0;
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	0 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	1 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	384 KB	Output is correct
19	Correct	1 ms	404 KB	Output is correct
20	Correct	0 ms	384 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	0 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	1 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	384 KB	Output is correct
19	Correct	1 ms	404 KB	Output is correct
20	Correct	0 ms	384 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct
22	Correct	1 ms	512 KB	Output is correct
23	Correct	1 ms	512 KB	Output is correct
24	Correct	1 ms	512 KB	Output is correct
25	Correct	2 ms	512 KB	Output is correct
26	Correct	1 ms	512 KB	Output is correct
27	Correct	1 ms	512 KB	Output is correct
28	Correct	1 ms	512 KB	Output is correct
29	Correct	1 ms	640 KB	Output is correct
30	Correct	2 ms	512 KB	Output is correct
31	Correct	1 ms	512 KB	Output is correct
32	Correct	1 ms	512 KB	Output is correct
33	Correct	1 ms	512 KB	Output is correct
34	Correct	2 ms	512 KB	Output is correct
35	Correct	1 ms	512 KB	Output is correct
36	Correct	1 ms	544 KB	Output is correct
37	Correct	1 ms	512 KB	Output is correct
38	Correct	1 ms	512 KB	Output is correct
39	Correct	1 ms	512 KB	Output is correct
40	Correct	1 ms	512 KB	Output is correct
41	Correct	1 ms	512 KB	Output is correct
42	Correct	1 ms	512 KB	Output is correct
43	Correct	1 ms	512 KB	Output is correct
44	Correct	1 ms	512 KB	Output is correct
45	Correct	1 ms	512 KB	Output is correct
46	Correct	1 ms	512 KB	Output is correct
47	Correct	1 ms	512 KB	Output is correct
48	Correct	1 ms	512 KB	Output is correct
49	Correct	1 ms	512 KB	Output is correct
50	Correct	1 ms	512 KB	Output is correct
51	Correct	1 ms	512 KB	Output is correct
52	Correct	1 ms	512 KB	Output is correct
53	Correct	1 ms	512 KB	Output is correct
54	Correct	1 ms	512 KB	Output is correct
55	Correct	1 ms	512 KB	Output is correct
56	Correct	1 ms	512 KB	Output is correct
57	Correct	1 ms	640 KB	Output is correct
58	Correct	1 ms	512 KB	Output is correct
59	Correct	1 ms	512 KB	Output is correct
60	Correct	2 ms	512 KB	Output is correct
61	Correct	1 ms	512 KB	Output is correct
62	Correct	1 ms	640 KB	Output is correct
63	Correct	1 ms	512 KB	Output is correct

Subtask #3
53.0 / 53.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	384 KB	Output is correct
2	Correct	1 ms	384 KB	Output is correct
3	Correct	0 ms	384 KB	Output is correct
4	Correct	0 ms	384 KB	Output is correct
5	Correct	1 ms	384 KB	Output is correct
6	Correct	0 ms	384 KB	Output is correct
7	Correct	0 ms	384 KB	Output is correct
8	Correct	0 ms	384 KB	Output is correct
9	Correct	1 ms	384 KB	Output is correct
10	Correct	0 ms	384 KB	Output is correct
11	Correct	0 ms	384 KB	Output is correct
12	Correct	1 ms	384 KB	Output is correct
13	Correct	1 ms	384 KB	Output is correct
14	Correct	1 ms	384 KB	Output is correct
15	Correct	1 ms	384 KB	Output is correct
16	Correct	1 ms	384 KB	Output is correct
17	Correct	1 ms	384 KB	Output is correct
18	Correct	1 ms	384 KB	Output is correct
19	Correct	1 ms	404 KB	Output is correct
20	Correct	0 ms	384 KB	Output is correct
21	Correct	1 ms	384 KB	Output is correct
22	Correct	1 ms	512 KB	Output is correct
23	Correct	1 ms	512 KB	Output is correct
24	Correct	1 ms	512 KB	Output is correct
25	Correct	2 ms	512 KB	Output is correct
26	Correct	1 ms	512 KB	Output is correct
27	Correct	1 ms	512 KB	Output is correct
28	Correct	1 ms	512 KB	Output is correct
29	Correct	1 ms	640 KB	Output is correct
30	Correct	2 ms	512 KB	Output is correct
31	Correct	1 ms	512 KB	Output is correct
32	Correct	1 ms	512 KB	Output is correct
33	Correct	1 ms	512 KB	Output is correct
34	Correct	2 ms	512 KB	Output is correct
35	Correct	1 ms	512 KB	Output is correct
36	Correct	1 ms	544 KB	Output is correct
37	Correct	1 ms	512 KB	Output is correct
38	Correct	1 ms	512 KB	Output is correct
39	Correct	1 ms	512 KB	Output is correct
40	Correct	1 ms	512 KB	Output is correct
41	Correct	1 ms	512 KB	Output is correct
42	Correct	1 ms	512 KB	Output is correct
43	Correct	1 ms	512 KB	Output is correct
44	Correct	1 ms	512 KB	Output is correct
45	Correct	1 ms	512 KB	Output is correct
46	Correct	1 ms	512 KB	Output is correct
47	Correct	1 ms	512 KB	Output is correct
48	Correct	1 ms	512 KB	Output is correct
49	Correct	1 ms	512 KB	Output is correct
50	Correct	1 ms	512 KB	Output is correct
51	Correct	1 ms	512 KB	Output is correct
52	Correct	1 ms	512 KB	Output is correct
53	Correct	1 ms	512 KB	Output is correct
54	Correct	1 ms	512 KB	Output is correct
55	Correct	1 ms	512 KB	Output is correct
56	Correct	1 ms	512 KB	Output is correct
57	Correct	1 ms	640 KB	Output is correct
58	Correct	1 ms	512 KB	Output is correct
59	Correct	1 ms	512 KB	Output is correct
60	Correct	2 ms	512 KB	Output is correct
61	Correct	1 ms	512 KB	Output is correct
62	Correct	1 ms	640 KB	Output is correct
63	Correct	1 ms	512 KB	Output is correct
64	Correct	174 ms	16864 KB	Output is correct
65	Correct	188 ms	16988 KB	Output is correct
66	Correct	175 ms	16976 KB	Output is correct
67	Correct	178 ms	16860 KB	Output is correct
68	Correct	182 ms	17108 KB	Output is correct
69	Correct	175 ms	16856 KB	Output is correct
70	Correct	175 ms	16992 KB	Output is correct
71	Correct	179 ms	16864 KB	Output is correct
72	Correct	173 ms	16856 KB	Output is correct
73	Correct	202 ms	26808 KB	Output is correct
74	Correct	210 ms	26812 KB	Output is correct
75	Correct	174 ms	16860 KB	Output is correct
76	Correct	173 ms	16868 KB	Output is correct
77	Correct	191 ms	16856 KB	Output is correct
78	Correct	182 ms	16860 KB	Output is correct
79	Correct	187 ms	16868 KB	Output is correct
80	Correct	187 ms	16988 KB	Output is correct
81	Correct	145 ms	17140 KB	Output is correct
82	Correct	163 ms	17012 KB	Output is correct
83	Correct	191 ms	20796 KB	Output is correct
84	Correct	193 ms	22600 KB	Output is correct
85	Correct	192 ms	22340 KB	Output is correct
86	Correct	193 ms	18116 KB	Output is correct
87	Correct	182 ms	17460 KB	Output is correct
88	Correct	167 ms	17908 KB	Output is correct
89	Correct	174 ms	17900 KB	Output is correct
90	Correct	166 ms	17692 KB	Output is correct
91	Correct	173 ms	17980 KB	Output is correct
92	Correct	173 ms	18216 KB	Output is correct
93	Correct	155 ms	19976 KB	Output is correct
94	Correct	166 ms	21360 KB	Output is correct
95	Correct	154 ms	20336 KB	Output is correct
96	Correct	167 ms	18980 KB	Output is correct
97	Correct	161 ms	17688 KB	Output is correct
98	Correct	155 ms	17396 KB	Output is correct
99	Correct	165 ms	17240 KB	Output is correct
100	Correct	166 ms	19748 KB	Output is correct
101	Correct	164 ms	18100 KB	Output is correct
102	Correct	157 ms	17544 KB	Output is correct
103	Correct	171 ms	17388 KB	Output is correct
104	Correct	109 ms	17644 KB	Output is correct
105	Correct	202 ms	24248 KB	Output is correct
106	Correct	100 ms	17516 KB	Output is correct
107	Correct	100 ms	17516 KB	Output is correct
108	Correct	197 ms	27580 KB	Output is correct
109	Correct	99 ms	17644 KB	Output is correct
110	Correct	202 ms	27704 KB	Output is correct
111	Correct	165 ms	16868 KB	Output is correct

답안 #295042

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