#include<bits/stdc++.h>
using namespace std;
int main()
{
	ios_base::sync_with_stdio(false);
	int n;
	cin>>n;
	vector<pair<int,int>> w(n+5);
	for(int i=1;i<=n;i++)
	{
		cin>>w[i].first;
	}
	for(int i=1;i<=n;i++)
	{
		cin>>w[i].second;
	}
	sort(w.begin()+1,w.begin()+n+1,greater<pair<int,int>>());
	multiset<int> now;
	for(int i=2;i<=n;i+=2)
	{
		now.insert(w[i].second);
		if(i+1<=n)now.insert(w[i+1].second);
		if(i+1<=n)
		{
			while(now.size()>(i+1)/2)
				now.erase(now.begin());
		}
		else
		{
			while(now.size()>i/2)
				now.erase(now.begin());
		}
	}
	long long ans=0;
	for(auto z:now)ans+=z;
	cout<<ans<<endl;
	
	return 0;
}