#include<bits/stdc++.h>
#define FILE "read"
#define MAXN 1510
#define cmax(a,b) a=max(a,b)
#define cmin(a,b) a=min(a,b)
using namespace std;
typedef long long ll;
struct Point{
	ll x,y;
	Point(ll a=0,ll b=0):x(a),y(b){}
	inline void read(){scanf("%lld%lld",&x,&y);}
	inline void print(){printf("%d %d\n",x,y);}
	inline Point operator+(const Point &b){return Point(x+b.x,y+b.y);}
	inline Point operator-(const Point &b){return Point(x-b.x,y-b.y);}
	inline Point operator*(const ll p){return Point(x*p,y*p);}
	inline Point operator/(const ll p){return Point(x/p,y/p);}
	inline bool operator==(const Point &b)const{return x==b.x&&y==b.y;}
	inline bool operator< (const Point &b)const{return x<b.x||(x==b.x&&y<b.y);}
}A[MAXN];
inline ll Dot(Point A,Point B){return A.x*B.x+A.y*B.y;}
inline ll Cross(Point A,Point B){return A.x*B.y-A.y*B.x;}
inline ll Lenth(Point A){return Dot(A,A);}//避免精度误差，不开根号
struct Line{
	Point A,B,mid;  
	ll len;
	Line(){}
	Line(Point A,Point B):A(A),B(B){mid=Point(A.x+B.x,A.y+B.y); len=Lenth(A-B);}//避免精度误差，不除以2
	inline bool operator==(const Line &b)const{return mid==b.mid&&len==b.len;}
	inline bool operator< (const Line &b)const{return len<b.len||(len==b.len&&mid<b.mid);}
}L[MAXN*MAXN];
ll n,cnt,ans;
int main(){
	freopen(FILE".in","r",stdin);
	freopen(FILE"1.out","w",stdout);
	scanf("%lld",&n);
	for(int i=1;i<=n;++i) A[i].read();
	for(int i=1;i<=n;++i)for(int j=i+1;j<=n;++j)L[++cnt]=Line(A[i],A[j]);
	sort(L+1,L+cnt+1);
	for(int i=1;i<=cnt;++i)for(int j=i-1;j&&L[i]==L[j];--j)
		cmax(ans,abs(Cross(L[i].A-L[j].A,L[i].B-L[j].A)));
	printf("%lld\n",ans);
	return 0;
}