답안 #529590

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
529590	2022-02-23T08:44:32 Z	MilosMilutinovic	Power Plant (JOI20_power)	C++14	100 / 100	183 ms	28812 KB

power

#include <bits/stdc++.h>
#define rep(i, n) for(int i = 0; i < (int)(n); i ++)
#define rep1(i, n) for(int i = 1; i <= (int)(n); i ++)
#define MP make_pair

using namespace std;
typedef long long LL;
typedef pair<int, int> PII;

int n, dp[200005], ans;
vector<int> G[200005];
char s[200005];

void dfs(int v, int par)
{
	rep(i, G[v].size()) {
		int u = G[v][i];
		if(u == par) continue;
		dfs(u, v);
		if(s[v] == '1') ans = max(ans, dp[u] + 1);
		dp[v] += dp[u];
	}
	dp[v] -= (s[v] == '1' ? 1 : 0);
	if(s[v] == '1') dp[v] = max(dp[v], 1);
	ans = max(ans, dp[v]);
}

int main()
{
 	scanf("%d", &n);
 	rep(i, n - 1) {
		int a, b;
		scanf("%d%d", &a, &b);
		G[a].push_back(b);
		G[b].push_back(a);
	}
	scanf("%s", s + 1);
	dfs(1, 0);
	printf("%d", ans);
	return 0;
}

Compilation message

power.cpp: In function 'int main()':
power.cpp:30:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |   scanf("%d", &n);
      |   ~~~~~^~~~~~~~~~
power.cpp:33:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |   scanf("%d%d", &a, &b);
      |   ~~~~~^~~~~~~~~~~~~~~~
power.cpp:37:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |  scanf("%s", s + 1);
      |  ~~~~~^~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4940 KB	Output is correct
2	Correct	3 ms	4940 KB	Output is correct
3	Correct	3 ms	4940 KB	Output is correct
4	Correct	4 ms	4944 KB	Output is correct
5	Correct	3 ms	4940 KB	Output is correct
6	Correct	3 ms	4940 KB	Output is correct
7	Correct	3 ms	4940 KB	Output is correct
8	Correct	3 ms	5000 KB	Output is correct
9	Correct	3 ms	4940 KB	Output is correct
10	Correct	3 ms	4940 KB	Output is correct
11	Correct	3 ms	4940 KB	Output is correct
12	Correct	3 ms	4940 KB	Output is correct
13	Correct	3 ms	4940 KB	Output is correct
14	Correct	3 ms	4996 KB	Output is correct
15	Correct	3 ms	5000 KB	Output is correct
16	Correct	2 ms	4940 KB	Output is correct
17	Correct	3 ms	5000 KB	Output is correct
18	Correct	3 ms	4996 KB	Output is correct
19	Correct	3 ms	4940 KB	Output is correct
20	Correct	3 ms	4884 KB	Output is correct
21	Correct	3 ms	4940 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4940 KB	Output is correct
2	Correct	3 ms	4940 KB	Output is correct
3	Correct	3 ms	4940 KB	Output is correct
4	Correct	4 ms	4944 KB	Output is correct
5	Correct	3 ms	4940 KB	Output is correct
6	Correct	3 ms	4940 KB	Output is correct
7	Correct	3 ms	4940 KB	Output is correct
8	Correct	3 ms	5000 KB	Output is correct
9	Correct	3 ms	4940 KB	Output is correct
10	Correct	3 ms	4940 KB	Output is correct
11	Correct	3 ms	4940 KB	Output is correct
12	Correct	3 ms	4940 KB	Output is correct
13	Correct	3 ms	4940 KB	Output is correct
14	Correct	3 ms	4996 KB	Output is correct
15	Correct	3 ms	5000 KB	Output is correct
16	Correct	2 ms	4940 KB	Output is correct
17	Correct	3 ms	5000 KB	Output is correct
18	Correct	3 ms	4996 KB	Output is correct
19	Correct	3 ms	4940 KB	Output is correct
20	Correct	3 ms	4884 KB	Output is correct
21	Correct	3 ms	4940 KB	Output is correct
22	Correct	3 ms	5068 KB	Output is correct
23	Correct	4 ms	5068 KB	Output is correct
24	Correct	3 ms	5068 KB	Output is correct
25	Correct	4 ms	5068 KB	Output is correct
26	Correct	4 ms	5016 KB	Output is correct
27	Correct	4 ms	5068 KB	Output is correct
28	Correct	4 ms	5012 KB	Output is correct
29	Correct	4 ms	5136 KB	Output is correct
30	Correct	4 ms	5084 KB	Output is correct
31	Correct	4 ms	5068 KB	Output is correct
32	Correct	3 ms	5068 KB	Output is correct
33	Correct	4 ms	5068 KB	Output is correct
34	Correct	4 ms	5068 KB	Output is correct
35	Correct	3 ms	5064 KB	Output is correct
36	Correct	3 ms	5068 KB	Output is correct
37	Correct	4 ms	5068 KB	Output is correct
38	Correct	3 ms	5048 KB	Output is correct
39	Correct	4 ms	5140 KB	Output is correct
40	Correct	3 ms	5068 KB	Output is correct
41	Correct	4 ms	5136 KB	Output is correct
42	Correct	4 ms	5068 KB	Output is correct
43	Correct	3 ms	5012 KB	Output is correct
44	Correct	3 ms	5008 KB	Output is correct
45	Correct	4 ms	5068 KB	Output is correct
46	Correct	4 ms	5012 KB	Output is correct
47	Correct	3 ms	5068 KB	Output is correct
48	Correct	4 ms	5068 KB	Output is correct
49	Correct	4 ms	5068 KB	Output is correct
50	Correct	4 ms	5068 KB	Output is correct
51	Correct	3 ms	5068 KB	Output is correct
52	Correct	3 ms	5016 KB	Output is correct
53	Correct	4 ms	5068 KB	Output is correct
54	Correct	3 ms	5068 KB	Output is correct
55	Correct	4 ms	5068 KB	Output is correct
56	Correct	3 ms	5068 KB	Output is correct
57	Correct	4 ms	5196 KB	Output is correct
58	Correct	3 ms	5016 KB	Output is correct
59	Correct	4 ms	5008 KB	Output is correct
60	Correct	4 ms	5068 KB	Output is correct
61	Correct	4 ms	5068 KB	Output is correct
62	Correct	4 ms	5140 KB	Output is correct
63	Correct	3 ms	5012 KB	Output is correct

Subtask #3
53.0 / 53.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4940 KB	Output is correct
2	Correct	3 ms	4940 KB	Output is correct
3	Correct	3 ms	4940 KB	Output is correct
4	Correct	4 ms	4944 KB	Output is correct
5	Correct	3 ms	4940 KB	Output is correct
6	Correct	3 ms	4940 KB	Output is correct
7	Correct	3 ms	4940 KB	Output is correct
8	Correct	3 ms	5000 KB	Output is correct
9	Correct	3 ms	4940 KB	Output is correct
10	Correct	3 ms	4940 KB	Output is correct
11	Correct	3 ms	4940 KB	Output is correct
12	Correct	3 ms	4940 KB	Output is correct
13	Correct	3 ms	4940 KB	Output is correct
14	Correct	3 ms	4996 KB	Output is correct
15	Correct	3 ms	5000 KB	Output is correct
16	Correct	2 ms	4940 KB	Output is correct
17	Correct	3 ms	5000 KB	Output is correct
18	Correct	3 ms	4996 KB	Output is correct
19	Correct	3 ms	4940 KB	Output is correct
20	Correct	3 ms	4884 KB	Output is correct
21	Correct	3 ms	4940 KB	Output is correct
22	Correct	3 ms	5068 KB	Output is correct
23	Correct	4 ms	5068 KB	Output is correct
24	Correct	3 ms	5068 KB	Output is correct
25	Correct	4 ms	5068 KB	Output is correct
26	Correct	4 ms	5016 KB	Output is correct
27	Correct	4 ms	5068 KB	Output is correct
28	Correct	4 ms	5012 KB	Output is correct
29	Correct	4 ms	5136 KB	Output is correct
30	Correct	4 ms	5084 KB	Output is correct
31	Correct	4 ms	5068 KB	Output is correct
32	Correct	3 ms	5068 KB	Output is correct
33	Correct	4 ms	5068 KB	Output is correct
34	Correct	4 ms	5068 KB	Output is correct
35	Correct	3 ms	5064 KB	Output is correct
36	Correct	3 ms	5068 KB	Output is correct
37	Correct	4 ms	5068 KB	Output is correct
38	Correct	3 ms	5048 KB	Output is correct
39	Correct	4 ms	5140 KB	Output is correct
40	Correct	3 ms	5068 KB	Output is correct
41	Correct	4 ms	5136 KB	Output is correct
42	Correct	4 ms	5068 KB	Output is correct
43	Correct	3 ms	5012 KB	Output is correct
44	Correct	3 ms	5008 KB	Output is correct
45	Correct	4 ms	5068 KB	Output is correct
46	Correct	4 ms	5012 KB	Output is correct
47	Correct	3 ms	5068 KB	Output is correct
48	Correct	4 ms	5068 KB	Output is correct
49	Correct	4 ms	5068 KB	Output is correct
50	Correct	4 ms	5068 KB	Output is correct
51	Correct	3 ms	5068 KB	Output is correct
52	Correct	3 ms	5016 KB	Output is correct
53	Correct	4 ms	5068 KB	Output is correct
54	Correct	3 ms	5068 KB	Output is correct
55	Correct	4 ms	5068 KB	Output is correct
56	Correct	3 ms	5068 KB	Output is correct
57	Correct	4 ms	5196 KB	Output is correct
58	Correct	3 ms	5016 KB	Output is correct
59	Correct	4 ms	5008 KB	Output is correct
60	Correct	4 ms	5068 KB	Output is correct
61	Correct	4 ms	5068 KB	Output is correct
62	Correct	4 ms	5140 KB	Output is correct
63	Correct	3 ms	5012 KB	Output is correct
64	Correct	123 ms	14936 KB	Output is correct
65	Correct	128 ms	15000 KB	Output is correct
66	Correct	152 ms	15112 KB	Output is correct
67	Correct	122 ms	15028 KB	Output is correct
68	Correct	123 ms	15040 KB	Output is correct
69	Correct	143 ms	15036 KB	Output is correct
70	Correct	120 ms	15020 KB	Output is correct
71	Correct	149 ms	15008 KB	Output is correct
72	Correct	132 ms	15028 KB	Output is correct
73	Correct	143 ms	27592 KB	Output is correct
74	Correct	181 ms	27532 KB	Output is correct
75	Correct	129 ms	14804 KB	Output is correct
76	Correct	115 ms	14856 KB	Output is correct
77	Correct	121 ms	14864 KB	Output is correct
78	Correct	156 ms	14916 KB	Output is correct
79	Correct	131 ms	14976 KB	Output is correct
80	Correct	127 ms	14864 KB	Output is correct
81	Correct	120 ms	15288 KB	Output is correct
82	Correct	125 ms	15040 KB	Output is correct
83	Correct	139 ms	20368 KB	Output is correct
84	Correct	133 ms	22264 KB	Output is correct
85	Correct	158 ms	21956 KB	Output is correct
86	Correct	120 ms	16324 KB	Output is correct
87	Correct	134 ms	15968 KB	Output is correct
88	Correct	137 ms	16260 KB	Output is correct
89	Correct	116 ms	16196 KB	Output is correct
90	Correct	125 ms	16064 KB	Output is correct
91	Correct	128 ms	16196 KB	Output is correct
92	Correct	118 ms	16516 KB	Output is correct
93	Correct	114 ms	18904 KB	Output is correct
94	Correct	137 ms	20664 KB	Output is correct
95	Correct	155 ms	19360 KB	Output is correct
96	Correct	121 ms	17548 KB	Output is correct
97	Correct	145 ms	16100 KB	Output is correct
98	Correct	119 ms	15596 KB	Output is correct
99	Correct	112 ms	15368 KB	Output is correct
100	Correct	114 ms	18548 KB	Output is correct
101	Correct	144 ms	16452 KB	Output is correct
102	Correct	116 ms	15788 KB	Output is correct
103	Correct	125 ms	15572 KB	Output is correct
104	Correct	85 ms	15028 KB	Output is correct
105	Correct	134 ms	24420 KB	Output is correct
106	Correct	82 ms	15640 KB	Output is correct
107	Correct	81 ms	15596 KB	Output is correct
108	Correct	139 ms	28304 KB	Output is correct
109	Correct	74 ms	15060 KB	Output is correct
110	Correct	183 ms	28812 KB	Output is correct
111	Correct	123 ms	14868 KB	Output is correct

답안 #529590

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