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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#689227#9532. 长野原龙势流星群yhddd0 82ms12420kbC++141.5kb2024-10-30 15:56:122024-10-30 15:56:12

Judging History

你现在查看的是最新测评结果

  • [2024-10-30 15:56:12]
  • 评测
  • 测评结果:0
  • 用时:82ms
  • 内存:12420kb
  • [2024-10-30 15:56:12]
  • 提交

answer

#include<bits/stdc++.h>
#define int long long
#define mod 998244353ll
#define pii pair<int,int>
#define fi first
#define se second
#define mems(x,y) memset(x,y,sizeof(x))
#define pb push_back
#define db double
using namespace std;
const int maxn=200010;
const int inf=1e18;
inline int read(){
	int x=0,f=1;
	char ch=getchar();
	while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
	while(ch>='0'&&ch<='9'){x=(x<<3)+(x<<1)+(ch-48);ch=getchar();}
	return x*f;
}
bool Mbe;

int n,a[maxn];
int head[maxn],tot;
struct nd{
	int nxt,to;
}e[maxn];
void add(int u,int v){e[++tot]={head[u],v};head[u]=tot;}
int num[maxn],val[maxn];
int st[maxn],tp;
void dfs(int u){
	val[u]=a[u],num[u]=1;
	for(int i=head[u];i;i=e[i].nxt){
		int v=e[i].to;dfs(v);
	}
	tp=0;
	for(int i=head[u];i;i=e[i].nxt){
		int v=e[i].to;st[++tp]=v;
	}
	sort(st+1,st+tp+1,[&](int u,int v){return val[u]*num[v]>val[v]*num[u];});
	for(int i=1;i<=tp;i++){
		int v=st[i];
		if((val[u]+val[v])*num[u]>val[u]*(num[u]+num[v])){
			val[u]+=val[v],num[u]+=num[v];
		}
		else break;
	}
}
void work(){
	n=read();
	for(int i=2;i<=n;i++)add(read(),i);
	for(int i=1;i<=n;i++)a[i]=read();
	dfs(1);
	for(int i=1;i<=n;i++)printf("%.10lf\n",1.0*val[i]/num[i]);
}

// \
444

bool Med;
int T;
signed main(){
//	freopen(".in","r",stdin);
//	freopen(".out","w",stdout);
	
//	ios::sync_with_stdio(0);
//	cin.tie(0);cout.tie(0);
	
//	cerr<<(&Mbe-&Med)/1048576.0<<" MB\n";
	
	T=1;
	while(T--)work();
}

Details

Tip: Click on the bar to expand more detailed information

Subtask #1:

score: 0
Wrong Answer

Test #1:

score: 0
Wrong Answer
time: 0ms
memory: 10112kb

input:

2000
1 2 2 4 5 2 3 6 4 2 7 2 8 14 8 12 1 14 4 14 8 18 9 2 7 22 20 22 14 29 28 16 6 21 23 6 21 14 13 9 1 4 18 13 2 39 21 33 18 20 38 27 27 1 49 5 51 3 31 24 10 42 2 44 13 9 35 66 27 60 67 59 29 40 53 2 33 43 26 43 62 16 78 45 14 10 73 69 41 35 25 26 2 70 54 1 54 48 5 36 44 28 90 29 51 51 93 82 95 45 ...

output:

878341451.1578947306
879173186.6363636255
848557303.2272727489
912609654.6666666269
872318573.5000000000
816339179.0000000000
850251397.5555555820
858217450.2352941036
812960827.3636363745
866017059.7777777910
693335785.3750000000
921947345.6666666269
994728511.5000000000
950304719.0000000000
808673...

result:

wrong answer 1st numbers differ - expected: '883838885.9230770', found: '878341451.1578947', error = '0.0062200'

Subtask #2:

score: 0
Wrong Answer

Test #32:

score: 0
Wrong Answer
time: 82ms
memory: 12420kb

input:

200000
1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 16 17 17 18 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 31 32 32 33 33 34 34 35 35 36 36 37 37 38 38 39 39 40 40 41 41 42 42 43 43 44 44 45 45 46 46 47 47 48 48 49 49 50 50 51 51 52 52...

output:

686880396.2941176891
563544686.1428571939
693705743.1515151262
618391182.7999999523
746642876.0000000000
806376230.0000000000
698219365.7419354916
699584745.7500000000
617426841.1935484409
700325141.0000000000
691212027.0000000000
722381415.0000000000
631630674.3333333731
857291392.5000000000
709515...

result:

wrong answer 1st numbers differ - expected: '792545632.4154930', found: '686880396.2941177', error = '0.1333239'

Subtask #3:

score: 0
Skipped

Dependency #1:

0%

Subtask #4:

score: 0
Skipped

Dependency #2:

0%