답안 #332636

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
332636	2020-12-03T01:57:58 Z	YJU	Power Plant (JOI20_power)	C++14	100 / 100	250 ms	34476 KB

power

#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=4e5+5;
const ll K=350;
const ld pi=acos(-1);
const ll INF=(1LL<<60);
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()

ll n,x,y,h[N],dp[N],ans,col[N],sum;
vector<ll> v[N];
string s;

void DFS(ll nd,ll pa){
	dp[nd]=0;
	for(auto i:v[nd]){
		if(i==pa)continue;
		DFS(i,nd);
		dp[nd]+=max(dp[i]-col[i],col[i]);
	}
	return ;
}

void move(ll rt,ll to){
	dp[rt]-=max(dp[to]-col[to],col[to]);
	dp[to]+=max(dp[rt]-col[rt],col[rt]);
}

void reroot(ll nd,ll pa){
	ans=max(ans,max(dp[nd]-col[nd],col[nd]));
	for(auto i:v[nd]){
		if(i==pa)continue;
		move(nd,i);
		reroot(i,nd);
		move(i,nd);
	}
}

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin>>n;
	REP(i,n-1)cin>>x>>y,v[x].pb(y),v[y].pb(x);
	cin>>s;
	REP(i,n)if(s[i]=='1')col[i+1]=1,++sum;
	if(sum>=2)ans=2;else ans=sum;
	DFS(1,0);
	reroot(1,0);
	cout<<ans<<"\n";
	return 0;
}

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	9708 KB	Output is correct
2	Correct	7 ms	9708 KB	Output is correct
3	Correct	7 ms	9708 KB	Output is correct
4	Correct	7 ms	9708 KB	Output is correct
5	Correct	7 ms	9708 KB	Output is correct
6	Correct	7 ms	9708 KB	Output is correct
7	Correct	7 ms	9708 KB	Output is correct
8	Correct	7 ms	9708 KB	Output is correct
9	Correct	7 ms	9708 KB	Output is correct
10	Correct	7 ms	9708 KB	Output is correct
11	Correct	7 ms	9708 KB	Output is correct
12	Correct	7 ms	9708 KB	Output is correct
13	Correct	7 ms	9708 KB	Output is correct
14	Correct	7 ms	9708 KB	Output is correct
15	Correct	7 ms	9708 KB	Output is correct
16	Correct	7 ms	9708 KB	Output is correct
17	Correct	7 ms	9708 KB	Output is correct
18	Correct	7 ms	9708 KB	Output is correct
19	Correct	7 ms	9708 KB	Output is correct
20	Correct	7 ms	9708 KB	Output is correct
21	Correct	7 ms	9708 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	9708 KB	Output is correct
2	Correct	7 ms	9708 KB	Output is correct
3	Correct	7 ms	9708 KB	Output is correct
4	Correct	7 ms	9708 KB	Output is correct
5	Correct	7 ms	9708 KB	Output is correct
6	Correct	7 ms	9708 KB	Output is correct
7	Correct	7 ms	9708 KB	Output is correct
8	Correct	7 ms	9708 KB	Output is correct
9	Correct	7 ms	9708 KB	Output is correct
10	Correct	7 ms	9708 KB	Output is correct
11	Correct	7 ms	9708 KB	Output is correct
12	Correct	7 ms	9708 KB	Output is correct
13	Correct	7 ms	9708 KB	Output is correct
14	Correct	7 ms	9708 KB	Output is correct
15	Correct	7 ms	9708 KB	Output is correct
16	Correct	7 ms	9708 KB	Output is correct
17	Correct	7 ms	9708 KB	Output is correct
18	Correct	7 ms	9708 KB	Output is correct
19	Correct	7 ms	9708 KB	Output is correct
20	Correct	7 ms	9708 KB	Output is correct
21	Correct	7 ms	9708 KB	Output is correct
22	Correct	8 ms	9836 KB	Output is correct
23	Correct	8 ms	9836 KB	Output is correct
24	Correct	8 ms	9836 KB	Output is correct
25	Correct	8 ms	9836 KB	Output is correct
26	Correct	8 ms	9836 KB	Output is correct
27	Correct	8 ms	9836 KB	Output is correct
28	Correct	8 ms	9836 KB	Output is correct
29	Correct	8 ms	9928 KB	Output is correct
30	Correct	8 ms	9964 KB	Output is correct
31	Correct	8 ms	9964 KB	Output is correct
32	Correct	8 ms	9836 KB	Output is correct
33	Correct	7 ms	9836 KB	Output is correct
34	Correct	8 ms	9836 KB	Output is correct
35	Correct	7 ms	9836 KB	Output is correct
36	Correct	8 ms	9836 KB	Output is correct
37	Correct	8 ms	9836 KB	Output is correct
38	Correct	8 ms	9836 KB	Output is correct
39	Correct	9 ms	9964 KB	Output is correct
40	Correct	8 ms	9836 KB	Output is correct
41	Correct	8 ms	9964 KB	Output is correct
42	Correct	8 ms	9836 KB	Output is correct
43	Correct	9 ms	9836 KB	Output is correct
44	Correct	8 ms	9984 KB	Output is correct
45	Correct	8 ms	9964 KB	Output is correct
46	Correct	8 ms	9836 KB	Output is correct
47	Correct	8 ms	9836 KB	Output is correct
48	Correct	8 ms	9964 KB	Output is correct
49	Correct	8 ms	9964 KB	Output is correct
50	Correct	9 ms	9964 KB	Output is correct
51	Correct	8 ms	9964 KB	Output is correct
52	Correct	8 ms	9836 KB	Output is correct
53	Correct	8 ms	9964 KB	Output is correct
54	Correct	8 ms	9964 KB	Output is correct
55	Correct	9 ms	9836 KB	Output is correct
56	Correct	8 ms	9836 KB	Output is correct
57	Correct	8 ms	9984 KB	Output is correct
58	Correct	8 ms	9836 KB	Output is correct
59	Correct	8 ms	9836 KB	Output is correct
60	Correct	8 ms	9964 KB	Output is correct
61	Correct	8 ms	9836 KB	Output is correct
62	Correct	8 ms	9964 KB	Output is correct
63	Correct	8 ms	9836 KB	Output is correct

Subtask #3
53.0 / 53.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	9708 KB	Output is correct
2	Correct	7 ms	9708 KB	Output is correct
3	Correct	7 ms	9708 KB	Output is correct
4	Correct	7 ms	9708 KB	Output is correct
5	Correct	7 ms	9708 KB	Output is correct
6	Correct	7 ms	9708 KB	Output is correct
7	Correct	7 ms	9708 KB	Output is correct
8	Correct	7 ms	9708 KB	Output is correct
9	Correct	7 ms	9708 KB	Output is correct
10	Correct	7 ms	9708 KB	Output is correct
11	Correct	7 ms	9708 KB	Output is correct
12	Correct	7 ms	9708 KB	Output is correct
13	Correct	7 ms	9708 KB	Output is correct
14	Correct	7 ms	9708 KB	Output is correct
15	Correct	7 ms	9708 KB	Output is correct
16	Correct	7 ms	9708 KB	Output is correct
17	Correct	7 ms	9708 KB	Output is correct
18	Correct	7 ms	9708 KB	Output is correct
19	Correct	7 ms	9708 KB	Output is correct
20	Correct	7 ms	9708 KB	Output is correct
21	Correct	7 ms	9708 KB	Output is correct
22	Correct	8 ms	9836 KB	Output is correct
23	Correct	8 ms	9836 KB	Output is correct
24	Correct	8 ms	9836 KB	Output is correct
25	Correct	8 ms	9836 KB	Output is correct
26	Correct	8 ms	9836 KB	Output is correct
27	Correct	8 ms	9836 KB	Output is correct
28	Correct	8 ms	9836 KB	Output is correct
29	Correct	8 ms	9928 KB	Output is correct
30	Correct	8 ms	9964 KB	Output is correct
31	Correct	8 ms	9964 KB	Output is correct
32	Correct	8 ms	9836 KB	Output is correct
33	Correct	7 ms	9836 KB	Output is correct
34	Correct	8 ms	9836 KB	Output is correct
35	Correct	7 ms	9836 KB	Output is correct
36	Correct	8 ms	9836 KB	Output is correct
37	Correct	8 ms	9836 KB	Output is correct
38	Correct	8 ms	9836 KB	Output is correct
39	Correct	9 ms	9964 KB	Output is correct
40	Correct	8 ms	9836 KB	Output is correct
41	Correct	8 ms	9964 KB	Output is correct
42	Correct	8 ms	9836 KB	Output is correct
43	Correct	9 ms	9836 KB	Output is correct
44	Correct	8 ms	9984 KB	Output is correct
45	Correct	8 ms	9964 KB	Output is correct
46	Correct	8 ms	9836 KB	Output is correct
47	Correct	8 ms	9836 KB	Output is correct
48	Correct	8 ms	9964 KB	Output is correct
49	Correct	8 ms	9964 KB	Output is correct
50	Correct	9 ms	9964 KB	Output is correct
51	Correct	8 ms	9964 KB	Output is correct
52	Correct	8 ms	9836 KB	Output is correct
53	Correct	8 ms	9964 KB	Output is correct
54	Correct	8 ms	9964 KB	Output is correct
55	Correct	9 ms	9836 KB	Output is correct
56	Correct	8 ms	9836 KB	Output is correct
57	Correct	8 ms	9984 KB	Output is correct
58	Correct	8 ms	9836 KB	Output is correct
59	Correct	8 ms	9836 KB	Output is correct
60	Correct	8 ms	9964 KB	Output is correct
61	Correct	8 ms	9836 KB	Output is correct
62	Correct	8 ms	9964 KB	Output is correct
63	Correct	8 ms	9836 KB	Output is correct
64	Correct	210 ms	20856 KB	Output is correct
65	Correct	232 ms	21036 KB	Output is correct
66	Correct	206 ms	20892 KB	Output is correct
67	Correct	214 ms	20892 KB	Output is correct
68	Correct	217 ms	21020 KB	Output is correct
69	Correct	214 ms	20984 KB	Output is correct
70	Correct	214 ms	20960 KB	Output is correct
71	Correct	221 ms	20792 KB	Output is correct
72	Correct	210 ms	19368 KB	Output is correct
73	Correct	240 ms	32556 KB	Output is correct
74	Correct	250 ms	32556 KB	Output is correct
75	Correct	213 ms	22184 KB	Output is correct
76	Correct	213 ms	22192 KB	Output is correct
77	Correct	225 ms	21168 KB	Output is correct
78	Correct	228 ms	20904 KB	Output is correct
79	Correct	226 ms	20912 KB	Output is correct
80	Correct	231 ms	20904 KB	Output is correct
81	Correct	176 ms	20960 KB	Output is correct
82	Correct	206 ms	23268 KB	Output is correct
83	Correct	228 ms	28336 KB	Output is correct
84	Correct	243 ms	30524 KB	Output is correct
85	Correct	231 ms	30136 KB	Output is correct
86	Correct	220 ms	24620 KB	Output is correct
87	Correct	239 ms	24104 KB	Output is correct
88	Correct	201 ms	24296 KB	Output is correct
89	Correct	204 ms	24124 KB	Output is correct
90	Correct	198 ms	23952 KB	Output is correct
91	Correct	204 ms	24208 KB	Output is correct
92	Correct	206 ms	24476 KB	Output is correct
93	Correct	195 ms	26724 KB	Output is correct
94	Correct	192 ms	28384 KB	Output is correct
95	Correct	187 ms	27228 KB	Output is correct
96	Correct	196 ms	25256 KB	Output is correct
97	Correct	207 ms	23812 KB	Output is correct
98	Correct	191 ms	23388 KB	Output is correct
99	Correct	204 ms	23340 KB	Output is correct
100	Correct	201 ms	26264 KB	Output is correct
101	Correct	194 ms	24488 KB	Output is correct
102	Correct	189 ms	23548 KB	Output is correct
103	Correct	215 ms	23628 KB	Output is correct
104	Correct	116 ms	22364 KB	Output is correct
105	Correct	236 ms	30124 KB	Output is correct
106	Correct	130 ms	23900 KB	Output is correct
107	Correct	127 ms	23772 KB	Output is correct
108	Correct	240 ms	34092 KB	Output is correct
109	Correct	121 ms	22364 KB	Output is correct
110	Correct	239 ms	34476 KB	Output is correct
111	Correct	195 ms	23356 KB	Output is correct

답안 #332636

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