#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
#include<cstdlib>
#include<iostream>
using namespace std;
int xa[50000],xb[50000],ya[50000],yb[50000];
int n;
double a,b,c,s,p,ans;
double sqr(double x)
{
	return x*x;
}
double length(int x1,int x2,int y1,int y2)
{
	double temp;
	temp=sqrt(sqr(x1-x2)+sqr(y1-y2));
	return temp;
}
int main()
{
	freopen("curling.in","r",stdin);
	freopen("curling.out","w",stdout);
	scanf("%d",&n);
	for (int i=1;i<=n;i++)
	{
		scanf("%d%d",&xa[i],&ya[i]);
	}
	for (int i=1;i<=n;i++)
	{
		scanf("%d%d",&xb[i],&yb[i]);
	}
	for (int i=1;i<=n;i++)
	{
		for (int j=i+1;j<=n;j++)
		{
			for (int k=j+1;k<=n;k++)
			{
				a=length(xa[i],xa[j],ya[i],ya[j]);
				b=length(xa[j],xa[k],ya[j],ya[k]);
				c=length(xa[i],xa[k],ya[i],ya[k]);
				p=(a+b+c)/2;
				s=sqrt(p*(p-a)*(p-b)*(p-c));
				ans+=s;
			}
		}
	}
	ans=ans/2;
	printf("%d %d",ans);
}