QOJ.ac

QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#504617#9101. Zayin and BusPhantomThreshold#AC ✓166ms13504kbC++20934b2024-08-04 14:06:472024-08-04 14:06:47

Judging History

你现在查看的是最新测评结果

  • [2024-08-04 14:06:47]
  • 评测
  • 测评结果:AC
  • 用时:166ms
  • 内存:13504kb
  • [2024-08-04 14:06:47]
  • 提交

answer

#include<bits/stdc++.h>
#define ll long long
using namespace std;

const int maxn = 1010000;
const int inf  = 1e9;

int n,ans;
int a[maxn];
vector<int>V[maxn];

int cnt[maxn];
void dfs(const int x,const int fa,const int dep)
{
	cnt[dep]++;
	for(auto y:V[x]) if(y!=fa)
	{
		dfs(y,x,dep+1);
	}
}

int main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	
	int Tcase; cin>>Tcase;
	while(Tcase--)
	{
		cin>>n;
		for(int i=1;i<=n;i++)
		{
			vector<int>_;
			V[i].swap(_);
		}
		for(int i=1;i<n;i++)
		{
			int y; cin>>y;
			int x=i;
			V[x].push_back(y);
			V[y].push_back(x);
		}
		for(int i=1;i<=n;i++) 
		{
			cin>>a[i];
			a[i]+=i;
		}
		for(int i=1;i<=n;i++) cnt[i]=0;
		dfs(1,0,1);
		sort(a+1,a+n+1);
		
		ans=0;
		for(int i=1,j=n;i<=n;i++)
		{
			for(int k=1;k<=cnt[i];k++)
			{
				ans=max(a[j]+i,ans);
				j--;
			}
		}
		cout<<ans-1<<endl;
	}
	
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 2ms
memory: 5708kb

input:

14
1
1
1
2
1
3
2
1
1 1
2
1
1 2
2
1
2 1
2
1
1 3
2
1
3 1
2
1
1 4
2
1
4 1
3
1 1
1 1 1
3
1 2
1 1 1
3
1 1
1 3 2
3
1 2
1 3 2

output:

2
3
4
3
4
4
5
4
6
5
4
4
6
6

result:

ok 14 lines

Test #2:

score: 0
Accepted
time: 166ms
memory: 13504kb

input:

15
1000
1 2 2 1 1 1 4 8 1 7 7 7 9 3 4 7 15 18 18 4 6 11 19 7 6 1 9 13 2 21 28 6 17 24 24 2 28 5 32 24 23 8 3 26 15 28 25 34 46 41 33 16 46 11 7 2 13 53 12 59 52 53 51 52 31 41 63 18 55 49 55 62 15 19 23 67 18 37 2 4 23 75 58 55 14 84 20 3 7 89 82 15 53 77 60 25 97 69 5 40 54 24 72 10 87 90 99 43 71 ...

output:

98572828
100088663
99870474
100076153
99995412
100076982
99971239
100079684
99928633
100093408
99432584
100093568
99620300
100058966
99565256

result:

ok 15 lines