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답안 #732205

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
732205 2023-04-28T16:27:24 Z anhduc2701 Power Plant (JOI20_power) C++17
100 / 100
 227 ms 49392 KB 
/*
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#pragma GCC optimize("unroll-loops")
*/
#include<bits/stdc++.h>
using namespace std;
#define all(x) x.begin(), x.end()
#define len(x) ll(x.size())
#define eb emplace_back
#define PI acos(-1.0)
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define MIN(v) *min_element(all(v))
#define MAX(v) *max_element(all(v))
#define BIT(x,i) (1&((x)>>(i)))
#define MASK(x) (1LL<<(x))
#define task "tnc"  
typedef long long ll;
typedef long double ld;
const ll INF=1e18;
const int maxn=1e6+5;
const int mod=1e9+7;
const int mo=998244353;
using pi=pair<ll,ll>;
using vi=vector<ll>;
using pii=pair<pair<ll,ll>,ll>;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
string s;
int dp[maxn];
int re[maxn];
vector<int>G[maxn];
int sum[maxn];
int n;
int ans=0;
void dfs(int u,int pa){
	for(auto v:G[u]){
		if(v==pa)continue;
		dfs(v,u);
		if(s[u]=='1' && s[v]=='1'){
			ans=max(ans,2);
		}
		sum[u]+=dp[v];
	}
	dp[u]=max(s[u]-'0',sum[u]-(s[u]-'0'));
	
}
void re_dfs(int u,int pa){
	if(u!=1){
		re[u]=max(s[pa]-'0',sum[pa]-dp[u]+re[pa]-(s[pa]-'0'));
	}
	if(s[u]=='1'){
		ans=max(ans,max(1,re[u]+sum[u]-1));
	}
	else{
		ans=max(ans,re[u]+sum[u]);
	}
	for(auto v:G[u]){
		if(v==pa)continue;
		re_dfs(v,u);
	}
}
signed main()
{
	cin.tie(0),cout.tie(0)->sync_with_stdio(0);
    //freopen(task".inp" , "r" , stdin);
    //freopen(task".out" , "w" , stdout);
    cin>>n;
    for(int i=1;i<n;i++){
    	int u,v;
    	cin>>u>>v;
    	G[u].pb(v);
    	G[v].pb(u);
    }
    cin>>s;
    s=' '+s;
    dfs(1,-1);
    re_dfs(1,-1);

    cout<<ans<<"\n";
    return 0;
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 12 ms 23764 KB Output is correct
3 Correct 14 ms 23764 KB Output is correct
4 Correct 15 ms 23784 KB Output is correct
5 Correct 16 ms 23812 KB Output is correct
6 Correct 14 ms 23808 KB Output is correct
7 Correct 15 ms 23764 KB Output is correct
8 Correct 14 ms 23784 KB Output is correct
9 Correct 14 ms 23836 KB Output is correct
10 Correct 12 ms 23832 KB Output is correct
11 Correct 13 ms 23836 KB Output is correct
12 Correct 13 ms 23832 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 13 ms 23744 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 13 ms 23784 KB Output is correct
17 Correct 13 ms 23764 KB Output is correct
18 Correct 14 ms 23844 KB Output is correct
19 Correct 14 ms 23840 KB Output is correct
20 Correct 15 ms 23776 KB Output is correct
21 Correct 16 ms 23840 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 12 ms 23764 KB Output is correct
3 Correct 14 ms 23764 KB Output is correct
4 Correct 15 ms 23784 KB Output is correct
5 Correct 16 ms 23812 KB Output is correct
6 Correct 14 ms 23808 KB Output is correct
7 Correct 15 ms 23764 KB Output is correct
8 Correct 14 ms 23784 KB Output is correct
9 Correct 14 ms 23836 KB Output is correct
10 Correct 12 ms 23832 KB Output is correct
11 Correct 13 ms 23836 KB Output is correct
12 Correct 13 ms 23832 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 13 ms 23744 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 13 ms 23784 KB Output is correct
17 Correct 13 ms 23764 KB Output is correct
18 Correct 14 ms 23844 KB Output is correct
19 Correct 14 ms 23840 KB Output is correct
20 Correct 15 ms 23776 KB Output is correct
21 Correct 16 ms 23840 KB Output is correct
22 Correct 14 ms 23892 KB Output is correct
23 Correct 14 ms 23848 KB Output is correct
24 Correct 14 ms 23864 KB Output is correct
25 Correct 14 ms 23844 KB Output is correct
26 Correct 13 ms 23892 KB Output is correct
27 Correct 13 ms 23892 KB Output is correct
28 Correct 17 ms 23892 KB Output is correct
29 Correct 15 ms 24072 KB Output is correct
30 Correct 17 ms 24020 KB Output is correct
31 Correct 14 ms 23844 KB Output is correct
32 Correct 14 ms 23852 KB Output is correct
33 Correct 14 ms 23880 KB Output is correct
34 Correct 14 ms 23868 KB Output is correct
35 Correct 15 ms 23852 KB Output is correct
36 Correct 13 ms 23848 KB Output is correct
37 Correct 14 ms 23884 KB Output is correct
38 Correct 15 ms 23844 KB Output is correct
39 Correct 15 ms 23968 KB Output is correct
40 Correct 15 ms 23892 KB Output is correct
41 Correct 17 ms 23964 KB Output is correct
42 Correct 14 ms 23972 KB Output is correct
43 Correct 15 ms 23892 KB Output is correct
44 Correct 14 ms 23976 KB Output is correct
45 Correct 17 ms 23872 KB Output is correct
46 Correct 13 ms 23968 KB Output is correct
47 Correct 14 ms 23972 KB Output is correct
48 Correct 15 ms 24020 KB Output is correct
49 Correct 13 ms 24020 KB Output is correct
50 Correct 15 ms 23892 KB Output is correct
51 Correct 16 ms 23896 KB Output is correct
52 Correct 14 ms 23892 KB Output is correct
53 Correct 15 ms 23884 KB Output is correct
54 Correct 13 ms 23940 KB Output is correct
55 Correct 14 ms 23972 KB Output is correct
56 Correct 14 ms 23836 KB Output is correct
57 Correct 14 ms 24020 KB Output is correct
58 Correct 13 ms 23868 KB Output is correct
59 Correct 13 ms 23836 KB Output is correct
60 Correct 14 ms 24020 KB Output is correct
61 Correct 19 ms 23892 KB Output is correct
62 Correct 14 ms 23940 KB Output is correct
63 Correct 16 ms 24020 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 13 ms 23764 KB Output is correct
2 Correct 12 ms 23764 KB Output is correct
3 Correct 14 ms 23764 KB Output is correct
4 Correct 15 ms 23784 KB Output is correct
5 Correct 16 ms 23812 KB Output is correct
6 Correct 14 ms 23808 KB Output is correct
7 Correct 15 ms 23764 KB Output is correct
8 Correct 14 ms 23784 KB Output is correct
9 Correct 14 ms 23836 KB Output is correct
10 Correct 12 ms 23832 KB Output is correct
11 Correct 13 ms 23836 KB Output is correct
12 Correct 13 ms 23832 KB Output is correct
13 Correct 13 ms 23764 KB Output is correct
14 Correct 13 ms 23744 KB Output is correct
15 Correct 13 ms 23764 KB Output is correct
16 Correct 13 ms 23784 KB Output is correct
17 Correct 13 ms 23764 KB Output is correct
18 Correct 14 ms 23844 KB Output is correct
19 Correct 14 ms 23840 KB Output is correct
20 Correct 15 ms 23776 KB Output is correct
21 Correct 16 ms 23840 KB Output is correct
22 Correct 14 ms 23892 KB Output is correct
23 Correct 14 ms 23848 KB Output is correct
24 Correct 14 ms 23864 KB Output is correct
25 Correct 14 ms 23844 KB Output is correct
26 Correct 13 ms 23892 KB Output is correct
27 Correct 13 ms 23892 KB Output is correct
28 Correct 17 ms 23892 KB Output is correct
29 Correct 15 ms 24072 KB Output is correct
30 Correct 17 ms 24020 KB Output is correct
31 Correct 14 ms 23844 KB Output is correct
32 Correct 14 ms 23852 KB Output is correct
33 Correct 14 ms 23880 KB Output is correct
34 Correct 14 ms 23868 KB Output is correct
35 Correct 15 ms 23852 KB Output is correct
36 Correct 13 ms 23848 KB Output is correct
37 Correct 14 ms 23884 KB Output is correct
38 Correct 15 ms 23844 KB Output is correct
39 Correct 15 ms 23968 KB Output is correct
40 Correct 15 ms 23892 KB Output is correct
41 Correct 17 ms 23964 KB Output is correct
42 Correct 14 ms 23972 KB Output is correct
43 Correct 15 ms 23892 KB Output is correct
44 Correct 14 ms 23976 KB Output is correct
45 Correct 17 ms 23872 KB Output is correct
46 Correct 13 ms 23968 KB Output is correct
47 Correct 14 ms 23972 KB Output is correct
48 Correct 15 ms 24020 KB Output is correct
49 Correct 13 ms 24020 KB Output is correct
50 Correct 15 ms 23892 KB Output is correct
51 Correct 16 ms 23896 KB Output is correct
52 Correct 14 ms 23892 KB Output is correct
53 Correct 15 ms 23884 KB Output is correct
54 Correct 13 ms 23940 KB Output is correct
55 Correct 14 ms 23972 KB Output is correct
56 Correct 14 ms 23836 KB Output is correct
57 Correct 14 ms 24020 KB Output is correct
58 Correct 13 ms 23868 KB Output is correct
59 Correct 13 ms 23836 KB Output is correct
60 Correct 14 ms 24020 KB Output is correct
61 Correct 19 ms 23892 KB Output is correct
62 Correct 14 ms 23940 KB Output is correct
63 Correct 16 ms 24020 KB Output is correct
64 Correct 157 ms 35584 KB Output is correct
65 Correct 162 ms 35480 KB Output is correct
66 Correct 148 ms 35576 KB Output is correct
67 Correct 199 ms 35576 KB Output is correct
68 Correct 177 ms 35588 KB Output is correct
69 Correct 179 ms 35592 KB Output is correct
70 Correct 183 ms 35516 KB Output is correct
71 Correct 198 ms 35540 KB Output is correct
72 Correct 163 ms 35584 KB Output is correct
73 Correct 197 ms 48100 KB Output is correct
74 Correct 221 ms 48192 KB Output is correct
75 Correct 149 ms 35360 KB Output is correct
76 Correct 158 ms 35532 KB Output is correct
77 Correct 159 ms 35400 KB Output is correct
78 Correct 210 ms 35464 KB Output is correct
79 Correct 179 ms 35464 KB Output is correct
80 Correct 170 ms 35460 KB Output is correct
81 Correct 170 ms 35820 KB Output is correct
82 Correct 160 ms 35664 KB Output is correct
83 Correct 182 ms 40652 KB Output is correct
84 Correct 198 ms 42936 KB Output is correct
85 Correct 191 ms 42396 KB Output is correct
86 Correct 188 ms 36856 KB Output is correct
87 Correct 189 ms 36280 KB Output is correct
88 Correct 169 ms 36768 KB Output is correct
89 Correct 172 ms 36776 KB Output is correct
90 Correct 202 ms 36600 KB Output is correct
91 Correct 165 ms 36776 KB Output is correct
92 Correct 157 ms 37092 KB Output is correct
93 Correct 168 ms 39488 KB Output is correct
94 Correct 186 ms 41248 KB Output is correct
95 Correct 166 ms 39872 KB Output is correct
96 Correct 154 ms 38196 KB Output is correct
97 Correct 171 ms 36632 KB Output is correct
98 Correct 148 ms 36144 KB Output is correct
99 Correct 157 ms 35908 KB Output is correct
100 Correct 161 ms 39032 KB Output is correct
101 Correct 173 ms 37028 KB Output is correct
102 Correct 145 ms 36260 KB Output is correct
103 Correct 152 ms 36048 KB Output is correct
104 Correct 103 ms 35588 KB Output is correct
105 Correct 209 ms 45096 KB Output is correct
106 Correct 99 ms 35596 KB Output is correct
107 Correct 106 ms 35500 KB Output is correct
108 Correct 227 ms 48932 KB Output is correct
109 Correct 105 ms 35588 KB Output is correct
110 Correct 192 ms 49392 KB Output is correct
111 Correct 144 ms 35364 KB Output is correct