답안 #732741

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
732741	2023-04-29T08:50:08 Z	myrcella	Power Plant (JOI20_power)	C++17	100 / 100	202 ms	32448 KB

power

//by szh
#include<bits/stdc++.h>
using namespace std;

#define fi first
#define se second
#define pii pair<int,int>
#define pll pair<long long,long long>
#define pb push_back
#define debug(x) cerr<<#x<<"="<<x<<endl
#define pq priority_queue
#define inf 0x3f
#define rep(i,a,b) for (int i=a;i<(b);i++)
#define MP make_pair
#define SZ(x) (int(x.size()))
#define ll long long
#define mod 1000000007
#define ALL(x) x.begin(),x.end()
void inc(int &a,int b) {a=(a+b)%mod;}
void dec(int &a,int b) {a=(a-b+mod)%mod;}
int lowbit(int x) {return x&(-x);}
ll p0w(ll base,ll p) {ll ret=1;while(p>0){if (p%2ll==1ll) ret=ret*base%mod;base=base*base%mod;p/=2ll;}return ret;}

const int maxn = 2e5+10;

int n;
vector <int> edge[maxn];
bool mark[maxn];
int dp[maxn][2];

void dfs(int u,int fa) {
	int sum = 0,mx1 = -maxn,mx0 = -maxn;
	for (int v:edge[u]) {
		if (v==fa) continue;
		dfs(v,u);
		sum += dp[v][0];
		mx1 = max(mx1,dp[v][1]);
		mx0 = max(mx0,dp[v][0]);
	}
	if (mark[u]) {
		dp[u][0] = max(sum-1,1);
		dp[u][1] = max(mx1,mx0+1);
		dp[u][1] = max(dp[u][1],sum-1);
	}
	else {
		dp[u][0] = sum;
		dp[u][1] = mx1;
	}
}

int main() {
//	freopen("input.txt","r",stdin);	
	std::ios::sync_with_stdio(false);cin.tie(0);
	cin>>n;
	rep(i,1,n) {
		int u,v;cin>>u>>v;
		edge[u].pb(v);
		edge[v].pb(u);
	}
	string s;cin>>s;
	rep(i,0,n) if (s[i]=='1') mark[i+1]=1;
	dfs(1,-1);
	cout<<max(dp[1][0],dp[1][1]);
	return 0;
}

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	5028 KB	Output is correct
4	Correct	3 ms	5024 KB	Output is correct
5	Correct	3 ms	5036 KB	Output is correct
6	Correct	4 ms	5036 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	5032 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	3 ms	4948 KB	Output is correct
15	Correct	6 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	5 ms	4948 KB	Output is correct
18	Correct	4 ms	5032 KB	Output is correct
19	Correct	8 ms	5024 KB	Output is correct
20	Correct	3 ms	5032 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	5028 KB	Output is correct
4	Correct	3 ms	5024 KB	Output is correct
5	Correct	3 ms	5036 KB	Output is correct
6	Correct	4 ms	5036 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	5032 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	3 ms	4948 KB	Output is correct
15	Correct	6 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	5 ms	4948 KB	Output is correct
18	Correct	4 ms	5032 KB	Output is correct
19	Correct	8 ms	5024 KB	Output is correct
20	Correct	3 ms	5032 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct
22	Correct	4 ms	5048 KB	Output is correct
23	Correct	4 ms	5076 KB	Output is correct
24	Correct	3 ms	5076 KB	Output is correct
25	Correct	3 ms	5036 KB	Output is correct
26	Correct	6 ms	5076 KB	Output is correct
27	Correct	3 ms	5076 KB	Output is correct
28	Correct	4 ms	5044 KB	Output is correct
29	Correct	4 ms	5172 KB	Output is correct
30	Correct	4 ms	5224 KB	Output is correct
31	Correct	4 ms	5076 KB	Output is correct
32	Correct	3 ms	5076 KB	Output is correct
33	Correct	3 ms	5076 KB	Output is correct
34	Correct	4 ms	5092 KB	Output is correct
35	Correct	4 ms	5076 KB	Output is correct
36	Correct	3 ms	5076 KB	Output is correct
37	Correct	4 ms	5048 KB	Output is correct
38	Correct	3 ms	5020 KB	Output is correct
39	Correct	4 ms	5076 KB	Output is correct
40	Correct	4 ms	5164 KB	Output is correct
41	Correct	3 ms	5204 KB	Output is correct
42	Correct	5 ms	5076 KB	Output is correct
43	Correct	3 ms	5132 KB	Output is correct
44	Correct	4 ms	5092 KB	Output is correct
45	Correct	3 ms	5076 KB	Output is correct
46	Correct	4 ms	5076 KB	Output is correct
47	Correct	4 ms	5052 KB	Output is correct
48	Correct	4 ms	5176 KB	Output is correct
49	Correct	3 ms	5204 KB	Output is correct
50	Correct	3 ms	5076 KB	Output is correct
51	Correct	3 ms	5076 KB	Output is correct
52	Correct	4 ms	5076 KB	Output is correct
53	Correct	3 ms	5172 KB	Output is correct
54	Correct	3 ms	5092 KB	Output is correct
55	Correct	4 ms	5040 KB	Output is correct
56	Correct	4 ms	5076 KB	Output is correct
57	Correct	4 ms	5204 KB	Output is correct
58	Correct	3 ms	5076 KB	Output is correct
59	Correct	4 ms	5048 KB	Output is correct
60	Correct	5 ms	5204 KB	Output is correct
61	Correct	3 ms	5148 KB	Output is correct
62	Correct	4 ms	5204 KB	Output is correct
63	Correct	3 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	5028 KB	Output is correct
4	Correct	3 ms	5024 KB	Output is correct
5	Correct	3 ms	5036 KB	Output is correct
6	Correct	4 ms	5036 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	5032 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	3 ms	4948 KB	Output is correct
15	Correct	6 ms	4948 KB	Output is correct
16	Correct	3 ms	4948 KB	Output is correct
17	Correct	5 ms	4948 KB	Output is correct
18	Correct	4 ms	5032 KB	Output is correct
19	Correct	8 ms	5024 KB	Output is correct
20	Correct	3 ms	5032 KB	Output is correct
21	Correct	3 ms	4948 KB	Output is correct
22	Correct	4 ms	5048 KB	Output is correct
23	Correct	4 ms	5076 KB	Output is correct
24	Correct	3 ms	5076 KB	Output is correct
25	Correct	3 ms	5036 KB	Output is correct
26	Correct	6 ms	5076 KB	Output is correct
27	Correct	3 ms	5076 KB	Output is correct
28	Correct	4 ms	5044 KB	Output is correct
29	Correct	4 ms	5172 KB	Output is correct
30	Correct	4 ms	5224 KB	Output is correct
31	Correct	4 ms	5076 KB	Output is correct
32	Correct	3 ms	5076 KB	Output is correct
33	Correct	3 ms	5076 KB	Output is correct
34	Correct	4 ms	5092 KB	Output is correct
35	Correct	4 ms	5076 KB	Output is correct
36	Correct	3 ms	5076 KB	Output is correct
37	Correct	4 ms	5048 KB	Output is correct
38	Correct	3 ms	5020 KB	Output is correct
39	Correct	4 ms	5076 KB	Output is correct
40	Correct	4 ms	5164 KB	Output is correct
41	Correct	3 ms	5204 KB	Output is correct
42	Correct	5 ms	5076 KB	Output is correct
43	Correct	3 ms	5132 KB	Output is correct
44	Correct	4 ms	5092 KB	Output is correct
45	Correct	3 ms	5076 KB	Output is correct
46	Correct	4 ms	5076 KB	Output is correct
47	Correct	4 ms	5052 KB	Output is correct
48	Correct	4 ms	5176 KB	Output is correct
49	Correct	3 ms	5204 KB	Output is correct
50	Correct	3 ms	5076 KB	Output is correct
51	Correct	3 ms	5076 KB	Output is correct
52	Correct	4 ms	5076 KB	Output is correct
53	Correct	3 ms	5172 KB	Output is correct
54	Correct	3 ms	5092 KB	Output is correct
55	Correct	4 ms	5040 KB	Output is correct
56	Correct	4 ms	5076 KB	Output is correct
57	Correct	4 ms	5204 KB	Output is correct
58	Correct	3 ms	5076 KB	Output is correct
59	Correct	4 ms	5048 KB	Output is correct
60	Correct	5 ms	5204 KB	Output is correct
61	Correct	3 ms	5148 KB	Output is correct
62	Correct	4 ms	5204 KB	Output is correct
63	Correct	3 ms	5076 KB	Output is correct
64	Correct	134 ms	16156 KB	Output is correct
65	Correct	136 ms	16168 KB	Output is correct
66	Correct	146 ms	16140 KB	Output is correct
67	Correct	145 ms	16080 KB	Output is correct
68	Correct	147 ms	16200 KB	Output is correct
69	Correct	139 ms	16104 KB	Output is correct
70	Correct	138 ms	16188 KB	Output is correct
71	Correct	202 ms	16092 KB	Output is correct
72	Correct	143 ms	15996 KB	Output is correct
73	Correct	166 ms	31244 KB	Output is correct
74	Correct	160 ms	31236 KB	Output is correct
75	Correct	144 ms	15972 KB	Output is correct
76	Correct	153 ms	15976 KB	Output is correct
77	Correct	125 ms	16008 KB	Output is correct
78	Correct	125 ms	16032 KB	Output is correct
79	Correct	119 ms	15980 KB	Output is correct
80	Correct	120 ms	15976 KB	Output is correct
81	Correct	110 ms	16488 KB	Output is correct
82	Correct	110 ms	16204 KB	Output is correct
83	Correct	132 ms	22204 KB	Output is correct
84	Correct	200 ms	24812 KB	Output is correct
85	Correct	142 ms	24504 KB	Output is correct
86	Correct	115 ms	17792 KB	Output is correct
87	Correct	108 ms	17072 KB	Output is correct
88	Correct	110 ms	17504 KB	Output is correct
89	Correct	132 ms	17532 KB	Output is correct
90	Correct	123 ms	17272 KB	Output is correct
91	Correct	125 ms	17588 KB	Output is correct
92	Correct	162 ms	17956 KB	Output is correct
93	Correct	151 ms	20872 KB	Output is correct
94	Correct	111 ms	22900 KB	Output is correct
95	Correct	113 ms	21304 KB	Output is correct
96	Correct	108 ms	19132 KB	Output is correct
97	Correct	110 ms	17252 KB	Output is correct
98	Correct	107 ms	16656 KB	Output is correct
99	Correct	123 ms	16520 KB	Output is correct
100	Correct	121 ms	20344 KB	Output is correct
101	Correct	142 ms	17928 KB	Output is correct
102	Correct	105 ms	16924 KB	Output is correct
103	Correct	120 ms	16720 KB	Output is correct
104	Correct	73 ms	16868 KB	Output is correct
105	Correct	143 ms	27320 KB	Output is correct
106	Correct	68 ms	16872 KB	Output is correct
107	Correct	75 ms	16876 KB	Output is correct
108	Correct	160 ms	31980 KB	Output is correct
109	Correct	73 ms	16832 KB	Output is correct
110	Correct	128 ms	32448 KB	Output is correct
111	Correct	111 ms	16056 KB	Output is correct

답안 #732741

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