#include <iostream>
#include <algorithm>
using namespace std;

int main()
{
	int n;
	int orders[100];
	int salaries[100];

	while (cin>>n && n!=0)
	{
		//reading phase
		for (int i=0;i<n;i++) cin>>orders[i];
		for (int i=0;i<n;i++) cin>>salaries[i];

		//sorting phase
		sort(orders,orders+n);
		sort(salaries,salaries+n);

		//summing products phase
		int sum=0;
		for (int i=0;i<n;i++) sum+=orders[i]*salaries[n-i-1];

		//output phase
		cout<<sum<<endl;
	}

	return 0;
}

/*
4
3 5 2 4
40 20 30 20
0
*/