답안 #550622

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
550622	2022-04-18T17:16:10 Z	Pherokung	Power Plant (JOI20_power)	C++14	100 / 100	200 ms	28816 KB

power

#include<bits/stdc++.h>
using namespace std;
#define N 200005
int n,u,v,dp[N],x[N],ans=0;
char s[N];
vector<int> adj[N];
int sol(int u,int p){
	int mx = 0;
	for(int v : adj[u]){
		if(v == p) continue;
		dp[u] += sol(v,u);
		mx = max(mx,dp[v]);
	}
	dp[u] = max(dp[u]-x[u],x[u]);
	ans = max({ans,dp[u],mx+x[u]});
	return dp[u];
}
int main(){
	scanf("%d",&n);
	for(int i=1;i<n;i++){
		scanf("%d%d",&u,&v);
		adj[u].push_back(v), adj[v].push_back(u);
	}
	scanf("%s",s+1);
	for(int i=1;i<=n;i++) if(s[i] == '1') x[i] = 1;
	sol(1,1);
	printf("%d",ans);
}

Compilation message

power.cpp: In function 'int main()':
power.cpp:19:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
power.cpp:21:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |   scanf("%d%d",&u,&v);
      |   ~~~~~^~~~~~~~~~~~~~
power.cpp:24:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |  scanf("%s",s+1);
      |  ~~~~~^~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4948 KB	Output is correct
2	Correct	3 ms	4948 KB	Output is correct
3	Correct	3 ms	5012 KB	Output is correct
4	Correct	3 ms	4948 KB	Output is correct
5	Correct	3 ms	5012 KB	Output is correct
6	Correct	4 ms	5000 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4948 KB	Output is correct
9	Correct	3 ms	4948 KB	Output is correct
10	Correct	3 ms	4948 KB	Output is correct
11	Correct	3 ms	4948 KB	Output is correct
12	Correct	3 ms	4948 KB	Output is correct
13	Correct	3 ms	4948 KB	Output is correct
14	Correct	2 ms	5012 KB	Output is correct
15	Correct	3 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	5004 KB	Output is correct
19	Correct	3 ms	4948 KB	Output is correct
20	Correct	3 ms	4976 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4948 KB	Output is correct
2	Correct	3 ms	4948 KB	Output is correct
3	Correct	3 ms	5012 KB	Output is correct
4	Correct	3 ms	4948 KB	Output is correct
5	Correct	3 ms	5012 KB	Output is correct
6	Correct	4 ms	5000 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4948 KB	Output is correct
9	Correct	3 ms	4948 KB	Output is correct
10	Correct	3 ms	4948 KB	Output is correct
11	Correct	3 ms	4948 KB	Output is correct
12	Correct	3 ms	4948 KB	Output is correct
13	Correct	3 ms	4948 KB	Output is correct
14	Correct	2 ms	5012 KB	Output is correct
15	Correct	3 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	5004 KB	Output is correct
19	Correct	3 ms	4948 KB	Output is correct
20	Correct	3 ms	4976 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct
22	Correct	4 ms	5076 KB	Output is correct
23	Correct	3 ms	5076 KB	Output is correct
24	Correct	4 ms	5076 KB	Output is correct
25	Correct	4 ms	5080 KB	Output is correct
26	Correct	4 ms	5076 KB	Output is correct
27	Correct	4 ms	5076 KB	Output is correct
28	Correct	4 ms	5080 KB	Output is correct
29	Correct	5 ms	5204 KB	Output is correct
30	Correct	4 ms	5204 KB	Output is correct
31	Correct	4 ms	5076 KB	Output is correct
32	Correct	4 ms	5076 KB	Output is correct
33	Correct	4 ms	5076 KB	Output is correct
34	Correct	4 ms	5076 KB	Output is correct
35	Correct	4 ms	5076 KB	Output is correct
36	Correct	4 ms	5024 KB	Output is correct
37	Correct	4 ms	5024 KB	Output is correct
38	Correct	4 ms	5024 KB	Output is correct
39	Correct	4 ms	5076 KB	Output is correct
40	Correct	4 ms	5144 KB	Output is correct
41	Correct	4 ms	5076 KB	Output is correct
42	Correct	4 ms	5076 KB	Output is correct
43	Correct	4 ms	5076 KB	Output is correct
44	Correct	5 ms	5084 KB	Output is correct
45	Correct	4 ms	5076 KB	Output is correct
46	Correct	5 ms	5024 KB	Output is correct
47	Correct	4 ms	5076 KB	Output is correct
48	Correct	4 ms	5148 KB	Output is correct
49	Correct	4 ms	5076 KB	Output is correct
50	Correct	4 ms	5148 KB	Output is correct
51	Correct	3 ms	5076 KB	Output is correct
52	Correct	3 ms	5024 KB	Output is correct
53	Correct	3 ms	5076 KB	Output is correct
54	Correct	4 ms	5076 KB	Output is correct
55	Correct	4 ms	5024 KB	Output is correct
56	Correct	3 ms	5028 KB	Output is correct
57	Correct	4 ms	5256 KB	Output is correct
58	Correct	4 ms	5020 KB	Output is correct
59	Correct	5 ms	5156 KB	Output is correct
60	Correct	4 ms	5076 KB	Output is correct
61	Correct	3 ms	5076 KB	Output is correct
62	Correct	4 ms	5216 KB	Output is correct
63	Correct	4 ms	5076 KB	Output is correct

Subtask #3
53.0 / 53.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	4948 KB	Output is correct
2	Correct	3 ms	4948 KB	Output is correct
3	Correct	3 ms	5012 KB	Output is correct
4	Correct	3 ms	4948 KB	Output is correct
5	Correct	3 ms	5012 KB	Output is correct
6	Correct	4 ms	5000 KB	Output is correct
7	Correct	3 ms	4948 KB	Output is correct
8	Correct	3 ms	4948 KB	Output is correct
9	Correct	3 ms	4948 KB	Output is correct
10	Correct	3 ms	4948 KB	Output is correct
11	Correct	3 ms	4948 KB	Output is correct
12	Correct	3 ms	4948 KB	Output is correct
13	Correct	3 ms	4948 KB	Output is correct
14	Correct	2 ms	5012 KB	Output is correct
15	Correct	3 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	3 ms	4948 KB	Output is correct
18	Correct	3 ms	5004 KB	Output is correct
19	Correct	3 ms	4948 KB	Output is correct
20	Correct	3 ms	4976 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct
22	Correct	4 ms	5076 KB	Output is correct
23	Correct	3 ms	5076 KB	Output is correct
24	Correct	4 ms	5076 KB	Output is correct
25	Correct	4 ms	5080 KB	Output is correct
26	Correct	4 ms	5076 KB	Output is correct
27	Correct	4 ms	5076 KB	Output is correct
28	Correct	4 ms	5080 KB	Output is correct
29	Correct	5 ms	5204 KB	Output is correct
30	Correct	4 ms	5204 KB	Output is correct
31	Correct	4 ms	5076 KB	Output is correct
32	Correct	4 ms	5076 KB	Output is correct
33	Correct	4 ms	5076 KB	Output is correct
34	Correct	4 ms	5076 KB	Output is correct
35	Correct	4 ms	5076 KB	Output is correct
36	Correct	4 ms	5024 KB	Output is correct
37	Correct	4 ms	5024 KB	Output is correct
38	Correct	4 ms	5024 KB	Output is correct
39	Correct	4 ms	5076 KB	Output is correct
40	Correct	4 ms	5144 KB	Output is correct
41	Correct	4 ms	5076 KB	Output is correct
42	Correct	4 ms	5076 KB	Output is correct
43	Correct	4 ms	5076 KB	Output is correct
44	Correct	5 ms	5084 KB	Output is correct
45	Correct	4 ms	5076 KB	Output is correct
46	Correct	5 ms	5024 KB	Output is correct
47	Correct	4 ms	5076 KB	Output is correct
48	Correct	4 ms	5148 KB	Output is correct
49	Correct	4 ms	5076 KB	Output is correct
50	Correct	4 ms	5148 KB	Output is correct
51	Correct	3 ms	5076 KB	Output is correct
52	Correct	3 ms	5024 KB	Output is correct
53	Correct	3 ms	5076 KB	Output is correct
54	Correct	4 ms	5076 KB	Output is correct
55	Correct	4 ms	5024 KB	Output is correct
56	Correct	3 ms	5028 KB	Output is correct
57	Correct	4 ms	5256 KB	Output is correct
58	Correct	4 ms	5020 KB	Output is correct
59	Correct	5 ms	5156 KB	Output is correct
60	Correct	4 ms	5076 KB	Output is correct
61	Correct	3 ms	5076 KB	Output is correct
62	Correct	4 ms	5216 KB	Output is correct
63	Correct	4 ms	5076 KB	Output is correct
64	Correct	134 ms	15784 KB	Output is correct
65	Correct	155 ms	15840 KB	Output is correct
66	Correct	130 ms	15836 KB	Output is correct
67	Correct	137 ms	15828 KB	Output is correct
68	Correct	164 ms	15820 KB	Output is correct
69	Correct	134 ms	15764 KB	Output is correct
70	Correct	136 ms	15828 KB	Output is correct
71	Correct	162 ms	15832 KB	Output is correct
72	Correct	153 ms	15060 KB	Output is correct
73	Correct	139 ms	28444 KB	Output is correct
74	Correct	147 ms	28344 KB	Output is correct
75	Correct	151 ms	15676 KB	Output is correct
76	Correct	150 ms	15632 KB	Output is correct
77	Correct	132 ms	15704 KB	Output is correct
78	Correct	155 ms	15692 KB	Output is correct
79	Correct	177 ms	15664 KB	Output is correct
80	Correct	137 ms	15700 KB	Output is correct
81	Correct	138 ms	16096 KB	Output is correct
82	Correct	138 ms	15924 KB	Output is correct
83	Correct	152 ms	20812 KB	Output is correct
84	Correct	161 ms	23144 KB	Output is correct
85	Correct	178 ms	22700 KB	Output is correct
86	Correct	150 ms	17144 KB	Output is correct
87	Correct	156 ms	16556 KB	Output is correct
88	Correct	119 ms	16960 KB	Output is correct
89	Correct	139 ms	17072 KB	Output is correct
90	Correct	126 ms	16856 KB	Output is correct
91	Correct	139 ms	17048 KB	Output is correct
92	Correct	124 ms	17308 KB	Output is correct
93	Correct	132 ms	19852 KB	Output is correct
94	Correct	133 ms	21424 KB	Output is correct
95	Correct	129 ms	20096 KB	Output is correct
96	Correct	125 ms	18416 KB	Output is correct
97	Correct	140 ms	16896 KB	Output is correct
98	Correct	151 ms	16428 KB	Output is correct
99	Correct	118 ms	16168 KB	Output is correct
100	Correct	122 ms	19376 KB	Output is correct
101	Correct	164 ms	17376 KB	Output is correct
102	Correct	118 ms	16552 KB	Output is correct
103	Correct	125 ms	16400 KB	Output is correct
104	Correct	91 ms	15760 KB	Output is correct
105	Correct	200 ms	24588 KB	Output is correct
106	Correct	96 ms	16360 KB	Output is correct
107	Correct	80 ms	16400 KB	Output is correct
108	Correct	182 ms	28308 KB	Output is correct
109	Correct	100 ms	15808 KB	Output is correct
110	Correct	157 ms	28816 KB	Output is correct
111	Correct	112 ms	15604 KB	Output is correct

답안 #550622

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