#include "bits/stdc++.h"

using namespace std;

int x[105],y[105];
int main(){

    int n;cin>>n;
    for(int i=0;i<n;i++){
        cin>>x[i]>>y[i];
    }

    /*

     |\
     | \
     |  \
     |----
     */
    int mx=0;
    for(int i=0;i<n;i++){//right angle
        for(int j=0;j<n;j++){//same y
            for(int k=0;k<n;k++){
                if(i!=j && j!=k && i!=k){
                    if(y[j]==y[i] && x[k]==x[i]){
                        int diffX=abs(x[j]-x[i]);
                        int diffY=abs(y[k]-y[i]);
                        mx=max(mx, diffX*diffY);
                    }
                }
            }
        }
    }
    cout<<mx<<endl;
}