NOI.AC

ID	题目	提交者	结果	用时	内存	语言	文件大小	提交时间	测评时间
#211845	#3807. 随机游走	x_add_b	20	344ms	32440kb	C++11	992b	2024-10-07 16:01:55	2024-10-29 10:32:22

answer

#include<bits/stdc++.h>

namespace IO
{
	template<typename Type>
	void read(Type &x){
		char ch=getchar();
		x=0;bool f=0;
		while(ch<'0'||ch>'9')
			f|=(ch=='-'),ch=getchar();
		while(ch>='0'&&ch<='9')
			x=((x<<1)+(x<<3)+(ch^48)),ch=getchar();
		x=f?-x:x;
	}
}

using namespace std;

#define N 500005
#define LL long long

int n,w;
int val[N],fa[N];
LL nowtime,ans;

bool opt1=true,opt2=true;

struct node
{
	int v,w;
	bool operator < (const node &a) const
	{
		return 1ll*w*val[a.v]<1ll*a.w*val[v];
	}
};

vector<node> Graph[N];

int main()
{
//	freopen("ex_walk3.in","r",stdin);
	IO::read(n);
	for(int i=2;i<=n;i++){
		IO::read(fa[i]);IO::read(w);
		Graph[fa[i]].push_back({i,w});
	}	
	for(int i=1;i<=n;i++)
		IO::read(val[i]);
	for(int i=1;i<=n;i++)
		sort(Graph[i].begin(),Graph[i].end());		
	for(int i=0;i<n;i++){
		int v=Graph[1][i].v,w=Graph[1][i].w;
		nowtime+=w;
		ans+=(nowtime*val[v]);
	}
	printf("%lld",ans);
	return 0;
}

源文件, 语言: C++11

详细

小提示：点击横条可展开更详细的信息

Test #1:

score: 0

Wrong Answer

time: 3ms

memory: 12924kb

input:

11
1 653
2 978
3 277
4 562
3 119
6 957
3 362
6 637
6 157
9 939
460 270 127 466 193 710 45 318 281 74...

output:

result:

wrong answer 1st lines differ - expected: '11506132', found: '383447'

Test #2:

score: 0

Wrong Answer

time: 11ms

memory: 14408kb

input:

output:

76233729670285

result:

wrong answer 1st lines differ - expected: '276117269146880', found: '76233729670285'

Test #3:

score: 0

Wrong Answer

time: 3ms

memory: 12948kb

input:

output:

60400183122

result:

wrong answer 1st lines differ - expected: '94592611925', found: '60400183122'

Test #4:

score: 0

Wrong Answer

time: 3ms

memory: 12952kb

input:

output:

68167864264

result:

wrong answer 1st lines differ - expected: '91654782236', found: '68167864264'

Test #5:

score: 0

Wrong Answer

time: 84ms

memory: 32440kb

input:

output:

2021728662921721

result:

wrong answer 1st lines differ - expected: '31331837945244749', found: '2021728662921721'

Test #6:

score: 10

Accepted

time: 127ms

memory: 20824kb

input:

output:

16263658814895739

result:

ok single line: '16263658814895739'

Test #7:

score: 10

Accepted

time: 113ms

memory: 20824kb

input:

output:

16307730758229655

result:

ok single line: '16307730758229655'

Test #8:

score: 0

Runtime Error

input:

output:

result:

Test #9:

score: 0

Runtime Error

input:

output:

result:

Test #10:

score: 0

Runtime Error

input: