답안 #293621

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
293621	2020-09-08T08:40:07 Z	errorgorn	Power Plant (JOI20_power)	C++14	100 / 100	1252 ms	75576 KB

power

//雪花飄飄北風嘯嘯
//天地一片蒼茫

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>
using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
#define ll long long
#define ii pair<ll,ll>
#define iii pair<ii,ll>
#define fi first
#define se second
#define endl '\n'
#define debug(x) cout << #x << " is " << x << endl

#define rep(x,start,end) for(auto x=(start)-((start)>(end));x!=(end)-((start)>(end));((start)<(end)?x++:x--))
#define all(x) (x).begin(),(x).end()
#define sz(x) (int)(x).size()

#define indexed_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
//change less to less_equal for non distinct pbds, but erase will bug

mt19937 rng(chrono::system_clock::now().time_since_epoch().count());

int n;
vector<int> al[200005];
string s;

map<ii,int> memo;

int par[200005];
int val[200005];

int dfs(int i,int p){
	if (memo.count(ii(i,p))) return memo[ii(i,p)];
	int res=0;
	
	if (par[i]==-2){
		for (auto &it:al[i]){
			if (it==p) continue;
			res+=dfs(it,i);
		}
		
		par[i]=p;
		val[i]=res;
	}
	else{
		res=val[i];
		if (par[i]!=-1) res+=dfs(par[i],i);
		if (p!=-1) res-=dfs(p,i);
	}
	
	res+=(s[i]=='1'?-1:0);
	return memo[ii(i,p)]=max(res,(s[i]=='1'?1:0));
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin.exceptions(ios::badbit | ios::failbit);
	
	cin>>n;
	rep(x,0,n) par[x]=-2;
	
	int a,b;
	rep(x,1,n){
		cin>>a>>b;
		a--,b--;
		
		al[a].push_back(b);
		al[b].push_back(a);
	}
	
	cin>>s;
	
	int ans=0;
	rep(x,0,n) if (s[x]=='1') ans++;
	ans=min(ans,2);
	
	rep(x,0,n){
		ans=max(dfs(x,-1),ans);
	}
	
	cout<<ans<<endl;
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	4992 KB	Output is correct
2	Correct	4 ms	4992 KB	Output is correct
3	Correct	4 ms	4992 KB	Output is correct
4	Correct	4 ms	4992 KB	Output is correct
5	Correct	4 ms	4992 KB	Output is correct
6	Correct	4 ms	4992 KB	Output is correct
7	Correct	4 ms	4992 KB	Output is correct
8	Correct	4 ms	4992 KB	Output is correct
9	Correct	4 ms	4992 KB	Output is correct
10	Correct	4 ms	4992 KB	Output is correct
11	Correct	3 ms	4992 KB	Output is correct
12	Correct	4 ms	4992 KB	Output is correct
13	Correct	3 ms	4992 KB	Output is correct
14	Correct	3 ms	4992 KB	Output is correct
15	Correct	3 ms	4992 KB	Output is correct
16	Correct	3 ms	4992 KB	Output is correct
17	Correct	4 ms	4992 KB	Output is correct
18	Correct	4 ms	4992 KB	Output is correct
19	Correct	4 ms	4992 KB	Output is correct
20	Correct	3 ms	4992 KB	Output is correct
21	Correct	4 ms	4992 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	4992 KB	Output is correct
2	Correct	4 ms	4992 KB	Output is correct
3	Correct	4 ms	4992 KB	Output is correct
4	Correct	4 ms	4992 KB	Output is correct
5	Correct	4 ms	4992 KB	Output is correct
6	Correct	4 ms	4992 KB	Output is correct
7	Correct	4 ms	4992 KB	Output is correct
8	Correct	4 ms	4992 KB	Output is correct
9	Correct	4 ms	4992 KB	Output is correct
10	Correct	4 ms	4992 KB	Output is correct
11	Correct	3 ms	4992 KB	Output is correct
12	Correct	4 ms	4992 KB	Output is correct
13	Correct	3 ms	4992 KB	Output is correct
14	Correct	3 ms	4992 KB	Output is correct
15	Correct	3 ms	4992 KB	Output is correct
16	Correct	3 ms	4992 KB	Output is correct
17	Correct	4 ms	4992 KB	Output is correct
18	Correct	4 ms	4992 KB	Output is correct
19	Correct	4 ms	4992 KB	Output is correct
20	Correct	3 ms	4992 KB	Output is correct
21	Correct	4 ms	4992 KB	Output is correct
22	Correct	7 ms	5504 KB	Output is correct
23	Correct	7 ms	5504 KB	Output is correct
24	Correct	7 ms	5504 KB	Output is correct
25	Correct	9 ms	5504 KB	Output is correct
26	Correct	7 ms	5504 KB	Output is correct
27	Correct	7 ms	5504 KB	Output is correct
28	Correct	8 ms	5504 KB	Output is correct
29	Correct	7 ms	5760 KB	Output is correct
30	Correct	8 ms	5760 KB	Output is correct
31	Correct	9 ms	5504 KB	Output is correct
32	Correct	7 ms	5504 KB	Output is correct
33	Correct	7 ms	5504 KB	Output is correct
34	Correct	7 ms	5504 KB	Output is correct
35	Correct	7 ms	5504 KB	Output is correct
36	Correct	7 ms	5504 KB	Output is correct
37	Correct	7 ms	5504 KB	Output is correct
38	Correct	7 ms	5504 KB	Output is correct
39	Correct	7 ms	5632 KB	Output is correct
40	Correct	8 ms	5632 KB	Output is correct
41	Correct	7 ms	5632 KB	Output is correct
42	Correct	7 ms	5504 KB	Output is correct
43	Correct	7 ms	5504 KB	Output is correct
44	Correct	7 ms	5504 KB	Output is correct
45	Correct	8 ms	5504 KB	Output is correct
46	Correct	7 ms	5504 KB	Output is correct
47	Correct	7 ms	5504 KB	Output is correct
48	Correct	7 ms	5632 KB	Output is correct
49	Correct	7 ms	5632 KB	Output is correct
50	Correct	7 ms	5504 KB	Output is correct
51	Correct	7 ms	5504 KB	Output is correct
52	Correct	7 ms	5504 KB	Output is correct
53	Correct	7 ms	5504 KB	Output is correct
54	Correct	7 ms	5504 KB	Output is correct
55	Correct	7 ms	5504 KB	Output is correct
56	Correct	6 ms	5504 KB	Output is correct
57	Correct	7 ms	5760 KB	Output is correct
58	Correct	6 ms	5504 KB	Output is correct
59	Correct	6 ms	5504 KB	Output is correct
60	Correct	7 ms	5632 KB	Output is correct
61	Correct	6 ms	5504 KB	Output is correct
62	Correct	7 ms	5760 KB	Output is correct
63	Correct	7 ms	5504 KB	Output is correct

Subtask #3
53.0 / 53.0

#	결과	실행 시간	메모리	Grader output
1	Correct	4 ms	4992 KB	Output is correct
2	Correct	4 ms	4992 KB	Output is correct
3	Correct	4 ms	4992 KB	Output is correct
4	Correct	4 ms	4992 KB	Output is correct
5	Correct	4 ms	4992 KB	Output is correct
6	Correct	4 ms	4992 KB	Output is correct
7	Correct	4 ms	4992 KB	Output is correct
8	Correct	4 ms	4992 KB	Output is correct
9	Correct	4 ms	4992 KB	Output is correct
10	Correct	4 ms	4992 KB	Output is correct
11	Correct	3 ms	4992 KB	Output is correct
12	Correct	4 ms	4992 KB	Output is correct
13	Correct	3 ms	4992 KB	Output is correct
14	Correct	3 ms	4992 KB	Output is correct
15	Correct	3 ms	4992 KB	Output is correct
16	Correct	3 ms	4992 KB	Output is correct
17	Correct	4 ms	4992 KB	Output is correct
18	Correct	4 ms	4992 KB	Output is correct
19	Correct	4 ms	4992 KB	Output is correct
20	Correct	3 ms	4992 KB	Output is correct
21	Correct	4 ms	4992 KB	Output is correct
22	Correct	7 ms	5504 KB	Output is correct
23	Correct	7 ms	5504 KB	Output is correct
24	Correct	7 ms	5504 KB	Output is correct
25	Correct	9 ms	5504 KB	Output is correct
26	Correct	7 ms	5504 KB	Output is correct
27	Correct	7 ms	5504 KB	Output is correct
28	Correct	8 ms	5504 KB	Output is correct
29	Correct	7 ms	5760 KB	Output is correct
30	Correct	8 ms	5760 KB	Output is correct
31	Correct	9 ms	5504 KB	Output is correct
32	Correct	7 ms	5504 KB	Output is correct
33	Correct	7 ms	5504 KB	Output is correct
34	Correct	7 ms	5504 KB	Output is correct
35	Correct	7 ms	5504 KB	Output is correct
36	Correct	7 ms	5504 KB	Output is correct
37	Correct	7 ms	5504 KB	Output is correct
38	Correct	7 ms	5504 KB	Output is correct
39	Correct	7 ms	5632 KB	Output is correct
40	Correct	8 ms	5632 KB	Output is correct
41	Correct	7 ms	5632 KB	Output is correct
42	Correct	7 ms	5504 KB	Output is correct
43	Correct	7 ms	5504 KB	Output is correct
44	Correct	7 ms	5504 KB	Output is correct
45	Correct	8 ms	5504 KB	Output is correct
46	Correct	7 ms	5504 KB	Output is correct
47	Correct	7 ms	5504 KB	Output is correct
48	Correct	7 ms	5632 KB	Output is correct
49	Correct	7 ms	5632 KB	Output is correct
50	Correct	7 ms	5504 KB	Output is correct
51	Correct	7 ms	5504 KB	Output is correct
52	Correct	7 ms	5504 KB	Output is correct
53	Correct	7 ms	5504 KB	Output is correct
54	Correct	7 ms	5504 KB	Output is correct
55	Correct	7 ms	5504 KB	Output is correct
56	Correct	6 ms	5504 KB	Output is correct
57	Correct	7 ms	5760 KB	Output is correct
58	Correct	6 ms	5504 KB	Output is correct
59	Correct	6 ms	5504 KB	Output is correct
60	Correct	7 ms	5632 KB	Output is correct
61	Correct	6 ms	5504 KB	Output is correct
62	Correct	7 ms	5760 KB	Output is correct
63	Correct	7 ms	5504 KB	Output is correct
64	Correct	1004 ms	50752 KB	Output is correct
65	Correct	1072 ms	50872 KB	Output is correct
66	Correct	1020 ms	50848 KB	Output is correct
67	Correct	1020 ms	50840 KB	Output is correct
68	Correct	1010 ms	50736 KB	Output is correct
69	Correct	1025 ms	50936 KB	Output is correct
70	Correct	1010 ms	50756 KB	Output is correct
71	Correct	1018 ms	50880 KB	Output is correct
72	Correct	1010 ms	50864 KB	Output is correct
73	Correct	1136 ms	73548 KB	Output is correct
74	Correct	1183 ms	73656 KB	Output is correct
75	Correct	1006 ms	50604 KB	Output is correct
76	Correct	1080 ms	50624 KB	Output is correct
77	Correct	1084 ms	50748 KB	Output is correct
78	Correct	1034 ms	50844 KB	Output is correct
79	Correct	1073 ms	50752 KB	Output is correct
80	Correct	1038 ms	50744 KB	Output is correct
81	Correct	890 ms	51316 KB	Output is correct
82	Correct	992 ms	50936 KB	Output is correct
83	Correct	1094 ms	60140 KB	Output is correct
84	Correct	1082 ms	63896 KB	Output is correct
85	Correct	1094 ms	63296 KB	Output is correct
86	Correct	1077 ms	53304 KB	Output is correct
87	Correct	1048 ms	52148 KB	Output is correct
88	Correct	1079 ms	52468 KB	Output is correct
89	Correct	1055 ms	52580 KB	Output is correct
90	Correct	1082 ms	52124 KB	Output is correct
91	Correct	1072 ms	52584 KB	Output is correct
92	Correct	1100 ms	53160 KB	Output is correct
93	Correct	944 ms	57860 KB	Output is correct
94	Correct	964 ms	60784 KB	Output is correct
95	Correct	913 ms	58324 KB	Output is correct
96	Correct	1055 ms	55048 KB	Output is correct
97	Correct	1049 ms	52268 KB	Output is correct
98	Correct	1121 ms	51452 KB	Output is correct
99	Correct	1025 ms	51216 KB	Output is correct
100	Correct	949 ms	56868 KB	Output is correct
101	Correct	1092 ms	53348 KB	Output is correct
102	Correct	994 ms	51972 KB	Output is correct
103	Correct	1070 ms	51420 KB	Output is correct
104	Correct	625 ms	51580 KB	Output is correct
105	Correct	1158 ms	67856 KB	Output is correct
106	Correct	613 ms	51440 KB	Output is correct
107	Correct	606 ms	51380 KB	Output is correct
108	Correct	1252 ms	74880 KB	Output is correct
109	Correct	623 ms	51380 KB	Output is correct
110	Correct	1177 ms	75576 KB	Output is correct
111	Correct	1000 ms	50776 KB	Output is correct

답안 #293621

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